SCM-34 molecular sieve, manufacturing method thereof and use thereof

본 발명은 SCM-34 분자체, 이의 제조 방법 및 용도를 개시한다. SCM-34 분자체는 알루미늄, 인, 산소 및 선택적으로 규소를 포함한다. 분자체의 XRD 회절 데이터에서, 5-50° 범위 내에서 가장 강한 피크의 2θ 각도는 7.59±0.2이다. SCM-34 분자체는 새로운 골격 구조를 가지며, 금속-함유 AFI 타입 분자체 또는 SAPO-17 분자체의 제조에 사용될 수 있어, 화학적 생산에서 촉매에 대한 다양한 요구를 충족한다.

Heterogeneous catalyst

불균일 촉매로서, 지지체 및 금을 포함하며, (i) 상기 지지체는 알루미나를 포함하고, (ii) 상기 촉매는 0.1 내지 5 wt%의 금을 포함하고, (iii) 상기 금의 적어도 90 wt%는 촉매 부피의 외부 60%에 있고, (iv) 상기 촉매의 입자들은 200 마이크론 내지 30 mm의 평균 직경을 갖고; 여기서, 중량 백분율은 상기 촉매의 중량을 기준으로 한다. 본 발명의 촉매는 메틸 메타크릴레이트(MMA)를 제조하는 방법에서 사용되는데, 이는 산화성 에스테르화 반응기 내에서 메타크롤레인을 메탄올로 처리하는 단계를 포함한다.

一种低温氨分解催化剂及其制备方法与应用

本发明公开了一种低温高效氨分解催化剂，包括载体和活性成分，所述载体为SBA‑15/G，所述活性成分为镍；制备方法，包括如下步骤：采用简单的机械混合法将Ni(OH) 2 与SBA‑15/G复合载体混合；然后在氨气气氛下焙烧得到Ni/SBA‑15/G负载型催化材料，制备材料在低温下的氨分解活性高于目前大多数Ni基催化剂，且该方法制备工艺简单、成本低，在氨分解反应中表现出较高的催化活性和稳定性。

Zsm-23 분자체 및 이의 제조 방법

본 발명은 ZSM-23 제올라이트 및 이를 제조하는 방법 및 이의 용도를 개시한다. 상기 ZSM-23 제올라이트의 총 산량이 0.05-0.25 mmol/g, 바람직하게는 0.06-0.22 mmol/g, 더 바람직하게는 0.06-0.20 mmol/g이고; 상기 ZSM-23 제올라이트의 강산 함량은 총 산량의 5-33%, 바람직하게는 7-33%, 더 바람직하게는 9-33%, 또는 더 바람직하게는 7-31%, 보다 더 바람직하게는 10-28%이고; 여기서 강산은 NH3 온도 프로그램 탈착(NH3-TPD)에서 탈착 온도가 350°C 이상인 산을 의미한다. 상기 ZSM-23 제올라이트는 강산 함량이 낮고 ZSM-23 제올라이트의 제조 방법이 간단하다.

AgCu SINGLE-ATOM ALLOY CATALYST FOR ELECTROCATALYTIC CO2 REDUCTION

Disclosed is a catalyst for producing a multicarbon product from CO2, comprising a copper (Cu) substrate having at least one silver copper (AgCu) single-atom alloy (SAA), and silver (Ag) nanoparticles (NPs) on the Cu substrate or on the AgCu SAA, wherein the AgCu SAA comprises at least one single Ag atom dispersed into a surface of the Cu substrate, and the Ag nanoparticles comprise Ag-Ag bonds between the Ag nanoparticles.

不均一触媒

A method for synthesis of carbon-silica-metal composite and combination thereof

The present invention is a facile and template based synthesis method for carbon-5 silica xerogel or carbon-silica aerogel type composites with uniformly distributed metal or metal oxide nanoparticles embedded inside their structure. The method gives high yield with almost all the synthesized metal or metal oxide nanoparticles loaded into the carbon-silica xerogel or carbon-silica aerogel composite structure by in-situ one-pot synthesis procedure. Embedded metal or metal-oxide 10 nanoparticles are three dimensionally covered by carbon coating. This method can also be used to produce carbon-silica xerogel or carbon-silica aerogel composite template based novel hollow granular shell carbon xerogel or hollow granular shell carbon aerogel with highest specific surface area. This method can also be scaled to large amount for various products through one line of synthesis process, 15 showing the potential for industrial scale prospects.

羧酸酯制造用催化剂、羧酸酯的制造方法和羧酸酯制造用催化剂的制造方法

一种羧酸酯制造用催化剂，其包含催化剂金属颗粒和负载所述催化剂金属颗粒的载体，所述羧酸酯制造用催化剂的体积密度为0.50g/cm 3 以上且1.50g/cm 3 以下，在将所述羧酸酯制造用催化剂的体积基准的粒径分布中频率累计为x％的粒径设为D x 时，D 10 /D 50 ≥0.2且D 90 /D 50 ≤2.5，在将所述粒径分布的半值宽度设为W时，W/D 50 ≤1.5。

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铱-锰氧化物复合材料、铱-锰氧化物复合电极材料及其制造方法

提供一种用作水电解中的产氧用阳极催化剂的、价格低廉且具有高催化活性的铱‑锰氧化物复合材料、铱‑锰氧化物复合电极材料、以及它们的制造方法。一种铱‑锰氧化物复合材料，其特征在于，在锰氧化物表面分散配置有铱，且铱的金属原子价为3.1以上且3.8以下；以及、一种铱‑锰氧化物复合电极材料，其由导电性基材构成，所述导电性基材由纤维构成且至少一部分覆盖有上述铱‑锰氧化物复合材料。

催化剂、蜂窝结构体和排气净化装置

本发明的一个方式的催化剂，具有含有5种以上的稀土元素和1种以上的铂族元素的氧化物。催化剂中，由(i)能够配置在氧化物的晶体结构中的阳离子位点上的稀土元素和铂族元素的种类数、和(ii)所述稀土元素和所述铂族元素各自的比例所决定的阳离子位点的配置的熵大于1.7R(R为气体常数)。

Self-cleaning fabric and article

A self-cleaning fabric having a photocatalyst responsive to UV, visible and IR irradiations for inactivating harmful microorganisms via photocatalysis.

Flexible self-powered materials for on demand generation of hydrogen peroxide

Disclosed are materials/systems and methods that are selective for the formation of hydrogen peroxide (H 2 O 2 ) via an electrochemical reaction. The materials/systems comprise a substrate and at least one pair of electrodes positioned on or within the substrate, wherein each pair of electrodes comprises an anode and a cathode. At least one of the anode and the cathode comprise a catalyst that can form hydrogen peroxide (H 2 O 2 ). The catalyst can comprise a nanoporous Cu catalyst.

Highly selective catalyst composition for the oxidation of alkenes to epoxides

A composition of matter useful for catalyzing an alkene epoxidation reaction using molecular oxygen (O2) as an oxidant, including a plurality of structures comprising nanostructures or microstructures each comprising a coinage metal; and a plurality of single oxophilic metal atoms. The oxophilic metal is characterized by an oxide formation enthalpy being more exothermic than that of the coinage metal. In one or more examples, the oxophilic atom comprises nickel and the coinage metal comprises silver, and a concentration of the nickel increases selectivity to greater than 85% for the epoxidation reaction CH2═CH2+½O2→(CH2)2O over combustion of ethylene forming carbon dioxide, and for an ethylene conversion of greater than 5%.

用于气固相反应连续生产1,1,1,3-四氯丙烷的催化剂、其制备方法与应用

一种用于气固相反应连续生产1,1,1,3-四氯丙烷的催化剂、其制备方法与应用。所述催化剂包括零价铁和磷共改性碳材料，其包括作为载体的碳材料、负载于载体上的作为活性组分的零价铁，以及形成于碳材料表面的磷酸酯官能团。所述制备方法包括：以亚铁盐和有机磷对碳材料进行共同改性，获得用于气固相反应连续生产1,1,1,3-四氯丙烷的催化剂。还提供了一种气固相反应连续生产1,1,1,3-四氯丙烷的方法。该催化剂在碳材料载体上集成了活性组分零价铁和助组分磷酸酯官能团，摆脱了传统间歇釜式反应对液态催化助剂的依赖，实现了1,1,1,3-四氯丙烷在气固相固定床反应器上的连续生产。

Ｚｓｍ－２３分子篩およびその調製方法

ＺＳＭ－２３分子篩およびその調製方法を提供する。ＺＳＭ－２３分子篩の全酸量は０．０５～０．２５ｍｍｏｌ／ｇであり、強酸含有量が全酸量の５～３３％であり、強酸はＮＨ３昇温脱離における対応する脱離温度が３５０℃超である酸を指す。前記調製方法は、（１）テンプレート剤、ならびに非晶質シリカ－アルミナおよび／または非晶質シリカ－アルミナ前駆体を含む混合溶液を調製する工程、（２）工程（１）の混合溶液にアルカリ源とシリコン源とを添加する工程、および、（３）工程（２）で得られた物質を結晶化し、任意で濾過、洗浄、乾燥し、任意で焼成し、ＺＳＭ－２３分子篩を得る工程、を含む。前記方法は簡単であり、得られるＺＳＭ－２３分子篩は強酸含有量が低く、かつ、良好な熱安定性および水熱安定性を同時に有し、優れた吸着剤または触媒材料として使用することができる。

Catalyst for production of carboxylic acid ester, method for producing carboxylic acid ester, and method for producing catalyst for production of carboxylic acid ester

A catalyst for production of carboxylic acid ester, containing:catalyst metal particles; anda support supporting the catalyst metal particles,wherein a bulk density of the catalyst for production of carboxylic acid ester is 0.50 g/cm³ or more and 1.50 g/cm³ or less,when a particle diameter, at which a cumulative frequency is x% in a particle diameter distribution based on a volume of the catalyst for production of carboxylic acid ester, is defined as D_x, D₁₀/D₅₀ ≥ 0.2 and D₉₀/D₅₀ ≤ 2.5 are satisfied, andwhen a half-width of the particle diameter distribution is defined as W, W/D₅₀ ≤ 1.5 is satisfied.

Zsm-23 zeolite and a preparation process and use thereof

Provided are a ZSM-23 molecular sieve and a preparation method therefor. The total acid content of the ZSM-23 molecular sieve is 0.05-0.25 mmol/g, and the strong acid content accounts for 5-33% of the total acid content, strong acid referring to acid having a corresponding desorption temperature above 350°C in NH3 programmed-temperature desorption. The preparation method comprises: (1) preparing a mixed solution containing a templating agent and amorphous silica-alumina and/or an amorphous silica-alumina precursor; (2) adding an alkali source and a silicon source to the mixed solution of step (1); and (3) crystallizing, optionally filtering and washing, drying and optionally calcining the material obtained in step (2) so as to obtain a ZSM-23 molecular sieve. Said method is simple, and the obtained ZSM-23 molecular sieve has low strong acid content, and at the same time has good thermal stability and hydrothermal stability, and may be used as an excellent adsorbent or catalytic material.

카르복실산에스테르 제조용 촉매, 카르복실산에스테르의 제조 방법 및 카르복실산에스테르 제조용 촉매의 제조 방법

촉매 금속 입자와 상기 촉매 금속 입자를 담지하는 담체를 포함하는 카르복실산에스테르 제조용 촉매로서, 상기 카르복실산에스테르 제조용 촉매의 부피 밀도가 0.50 g/㎤ 이상 1.50 g/㎤ 이하이고, 상기 카르복실산에스테르 제조용 촉매의 체적 기준의 입경 분포에서 빈도 누계가 x%가 되는 입자 지름을 D x 로 할 때 D 10 /D 50 ≥0.2이면서 D 90 /D 50 ≤2.5이고, 상기 입경 분포의 반치폭을 W로 할 때 W/D 50 ≤1.5인 카르복실산에스테르 제조용 촉매.

Zirconium doped terbium nano oxides for wastewater remediation

Zirconium doped terbium nano oxides (ZrTb2O3). The nano oxides can have an average diameter ranging from about 17 nm to about 22 nm. The nano oxides can be used as a photocatalyst for photodegradation of organic dyes. In an embodiment, the organic dyes include textile wastewater dyes. In an embodiment, the textile wastewater dyes include methylene blue (MB) and/or Congo Red (CR). In an embodiment, the zirconium doped terbium nano oxides (ZrTb2O3) can be prepared by a dual co-precipitation and calcination method.

Heterogeneous catalyst

A heterogeneous catalyst comprising a support and gold, wherein: (i) said support comprises alumina, (ii) said catalyst comprises from 0.1 to 5 wt % of gold, (iii) at least 90 wt % of the gold is in the outer 60% of catalyst volume, and (iv) particles of the catalyst have an average diameter from 200 microns to 30 mm; wherein weight percentages are based on weight of the catalyst.

Catalizador heterogeneo.

Un catalizador heterogéneo que comprende un soporte y oro, en donde: (i) el soporte comprende alúmina, (ii) el catalizador comprende de 0.1 a 5 % en peso de oro, (iii) al menos 90 % en peso del oro está en el 60 % externo del volumen de catalizador, y (iv) las partículas del catalizador tienen un diámetro promedio de 200 micrones a 30 mm; en donde los porcentajes en peso se basan en el peso del catalizador. El catalizador de la invención se usa en un proceso para producir metacrilato de metilo (MMA) que comprende tratar metacroleína con metanol en un reactor de esterificación oxidativo.

catalisador heterogêneo, leito de catalisador, e, método para preparar metacrilato de metila.

CATALISADOR HETEROGÊNEO, LEITO DE CATALISADOR, E, MÉTODO PARA PREPARAR METACRILATO DE METILA. Trata-se de um catalisador heterogêneo que compreende um suporte e ouro, em que: (i) o dito suporte compreende alumina, (ii) o dito catalisador compreende de 0,1 a 5% em peso de ouro, (iii) pelo menos 90% em peso do ouro está nos 60% mais externos do volume do catalisador e (iv) as partículas do catalisador têm um diâmetro médio de 200 mícrons a 30 mm; em que as porcentagens em peso são baseadas no peso do catalisador. O catalisador desta invenção é usado em um processo para produzir metacrilato de metila (MMA), que compreende o tratamento de metacroleína com metanol em um reator de esterificação oxidativa.

Herstellung von Kohlenstoff enthaltenden kristallinen Titanoxidaerogelen mit großer Oberfläche und großem Porenvolumen

Die Erfindung betrifft eine Sol-Gel basierende Syntheseroute zur Herstellung eines in CO2überkritisch getrockneten Aerogel, welches Titanoxid und Kohlenstoff enthält (Ti ca. 24at.%, C ca. 11at.% und einem Stoffmengenverhältnis von C zu Ti im Bereich von 0,16 bis 0,8) sowie entsprechende Titanoxidaerogele.

Production d'aérogels d’oxyde de titane cristallin contenant du carbone et présentant une grande surface spécifique et un grand volume poreux

La présente invention concerne une voie de synthèse à base de solution-gélification (sol-gel) permettant de produire un aérogel séché de manière supercritique dans du CO2 et contenant de l'oxyde de titane et du carbone (Ti représentant environ 24 % at., C représentant environ 11 % at., et avec un rapport molaire de C sur Ti dans la plage comprise entre 0,16 et 0,8), ainsi que les oxydes de titane correspondants.

非均相催化剂

一种包含载体和金的非均相催化剂，其中：(i)所述载体包含钛；(ii)所述催化剂包含0.1至5重量％的金；(iii)至少90重量％的所述金在催化剂体积的外部60％中；以及(iv)所述催化剂的颗粒的平均直径为200微米至30mm；其中重量百分比是按所述催化剂的重量计。本发明的催化剂适用于一种产生甲基丙烯酸甲酯(MMA)的方法，所述方法包含在含有催化剂床的氧化酯化反应器(OER)中用甲醇处理甲基丙烯醛。

Photocatalytic co2 reduction with co-catalyst-decorated nanostructures

A photocatalytic device includes a substrate and an array of conductive projections supported by the substrate and extending outward from the substrate. Each conductive projection of the array of conductive projections has a semiconductor composition configured for charge carrier generation in response to solar radiation. Each conductive projection of the array of conductive projections is decorated with a co-catalyst arrangement. The cocatalyst arrangement includes gold and an oxide material.

Iridium-manganese oxide composite material, iridium-manganese oxide composite electrode material, and methods for producing same

Provided are an iridium-manganese oxide composite material and an iridium-manganese oxide composite electrode material that are inexpensive and have high catalytic activity for use in an anode catalyst for oxygen evolution associated with water electrolysis. Also provided are methods for producing the same. An iridium-manganese oxide composite material comprising a manganese oxide and iridium distributed on at least a surface of the manganese oxide, the iridium having a metal valence of 3.1 or greater and 3.8 or less. An iridium-manganese oxide composite electrode material comprising a conductive substrate formed of a fiber, with the iridium-manganese oxide composite material being coated on at least a portion of the conductive substrate.

イリジウム－マンガン酸化物複合材料、イリジウム－マンガン酸化物複合電極材料、及びこれらの製造方法

Scm-34 molecular sieve, preparation method therefor and use thereof

A SCM-34 molecular sieve, preparation method therefor and use thereof are provided. The SCM-34 molecular sieve contains aluminum, phosphorus, oxygen and optionally silicon. In the XRD diffraction data of the molecular sieve, a 2θ degree of the strongest peak within the range of 5-50° is 7.59±0.2. The SCM-34 molecular sieve has a new skeleton structure and can be used to prepare a metal-containing AFI type molecular sieve or an SAPO-17 molecular sieve.

Scm-34 molecular sieve, preparation method therefor and use thereof

Ｓｃｍ－３４分子篩、その調製方法及び使用

本発明は、ＳＣＭ－３４分子篩、その調製方法及び使用を開示する。前記ＳＣＭ－３４分子篩は、アルミニウム、リン、酸素及び任意選択のケイ素を含み、前記分子篩のＸＲＤ回折データにおいて、２θ角度の５～５０°範囲内の最も強いピークの２θ角度は７．５９±０．２である。当該ＳＣＭ－３４分子篩は新たな骨格構造を有し、金属を含有するＡＦＩ型分子篩またはＳＡＰＯ－１７分子篩を調製するために使用することができ、化学工業生産における触媒に対する様々な需要に見合う。

Disproportionation and transalkylation catalyst, and preparation and application thereof

A disproportionation and transalkylation catalyst can be used in the catalytic conversion of alkyl aromatic hydrocarbons. The catalyst contains an acidic molecular sieve, a first metal component immobilized on the acidic molecular sieve and an oxide additive. The first metal contained in the first metal component is at least one selected from the group of Group VB metals, Group VIB metals and Group VIIB metals, the catalyst has a mediate strong acid content of 0.05-2.0 mmol/g of catalyst, and a ratio of the mediate strong acid content to the total acid content of 60-99%. When used in the catalytic conversion of alkyl aromatic hydrocarbons, the catalyst exhibits high reaction activity, low aromatic hydrocarbon loss rate.

Self-cleaning fabric and article

A self-cleaning fabric having a photocatalyst responsive to UV, visible and IR irradiations for inactivating harmful microorganisms via photocatalysis.

MWW-type zeolite with macroscale hollow structure

The present invention provides zeolite hollow spheres in which zeolite crystals grow to form a framework of macropore through a hydrothermal crystallization process using the hydrophilic surface of a carbon sphere as a hard template, wherein the zeolite framework is an ordered, porous crystalline zeolite material with a number of channels or pores interconnected, which has pore structures including mesopores and micropores. The zeolite hollow spheres of the present invention can be used for various purposes such as catalysts and adsorbents.

Catalyst for production of carboxylic acid ester, method for producing carboxylic acid ester, and method for producing catalyst for production of carboxylic acid ester

A catalyst for production of carboxylic acid ester, containing:catalyst metal particles; anda support supporting the catalyst metal particles,wherein a bulk density of the catalyst for production of carboxylic acid ester is 0.50 g/cm3 or more and 1.50 g/cm3 or less,when a particle diameter, at which a cumulative frequency is x % in a particle diameter distribution based on a volume of the catalyst for production of carboxylic acid ester, is defined as Dx, D10/D50≥0.2 and D90/D50≤2.5 are satisfied, andwhen a half-width of the particle diameter distribution is defined as W, W/D50≤1.5 is satisfied.

不均化およびトランスアルキル化触媒、ならびに調製、ならびにそれらの利用

不均化およびトランスアルキル化触媒、その調製、ならびにその利用が開示され、前記触媒は、酸性分子篩と、酸性分子篩に装填される第１の金属成分と、酸化物添加剤とを含み、第１の金属成分中の第１の金属が、第ＶＢ族金属、第ＶＩＢ族金属、および第ＶＩＩＢ族金属のうちの少なくとも１つから選択され、触媒の中強酸の量が０．０５～２．０ｍｍｏｌ／ｇ触媒であり、酸の総量における中強酸の比率が６０～９９％である。アルキル芳香族炭化水素の触媒転化のために使用されるとき、前記触媒は、反応活性が高く、芳香族炭化水素の損失が少ない利点を有する。

Lu2O3@ZnO nanocomposites for photodegradation of textile wastewater dyes

A Lu2O3@ZnO nanocomposite includes Lu2O3 and ZnO. The nanocomposite can have an average diameter ranging from about 20 nm to about 25 nm. The nanocomposite can be used as a photocatalyst for photodegradation of organic dyes. In an embodiment, the organic dyes include textile wastewater dyes. In an embodiment, the textile wastewater dyes include methylene blue (MB).

Multicomponent alloyed plasmonic photocatalysis

Improved photocatalysis is provided for chemical reactions involving hydrogen in two component plasmon-catalyst nanoparticles. The main idea of this work is to configure the optical illumination of the nano-articles to suppress formation of an undesirable hydride phase in the nanoparticles. This idea is broadly applicable to any chemical reaction involving hydrogen. Specific examples considered experimentally in this work are acetylene hydrogenation to produce ethylene, carbon dioxide reduction and ammonia synthesis.

HERSTELLUNG VON KOHLENSTOFF ENTHALTENDEN KRISTALLINEN TITANOXIDAEROGELEN MIT GROßER OBERFLÄCHE UND GROßEM PORENVOLUMEN

Die Erfindung betrifft eine Sol-Gel basierende Syntheseroute zur Herstellung eines in CO 2 überkritisch getrockneten Aerogel, welches Titanoxid und Kohlenstoff enthält (Ti ca. 24at.%, C ca. 11at.% und einem Stoffmengenverhältnis von C zu Ti im Bereich von 0,16 bis 0,8) sowie entsprechende Titanoxidaerogele.

Catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as preparation method and use thereof

A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The catalyst provided in the present application integrates active component zero-valent iron and auxiliary component phosphate functional group on the carbon material, thereby realizing the continuous production of 1,1,1,3-tetrachloropropane on a gas-solid fixed bed reactor.

Catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as preparation method and use thereof

A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The catalyst provided in the present application integrates active component zero-valent iron and auxiliary component phosphate functional group on the carbon material, thereby realizing the continuous production of 1,1,1,3-tetrachloropropane on a gas-solid fixed bed reactor.

선택적 개환 반응용 촉매 및 이의 사용 방법

본 개시는 SRO 반응용 금속 복합체 촉매로서, 니켈; 몰리브덴; 및 텅스텐을 포함하며, 상기 촉매는 비담지 촉매인, SRO 반응용 금속 복합체 촉매를 제공하며, 상기 촉매를 이용하는 방법을 또한 제공한다.

非均相催化剂

一种包含载体和金的非均相催化剂，其中：(i)所述载体包含氧化铝，(ii)所述催化剂包含0.1wt％至5wt％的金，(iii)至少90wt％的所述金在催化剂体积的外部60％中，和(iv)所述催化剂的颗粒具有200微米至30毫米的平均直径；其中重量百分比是按所述催化剂的重量计。本发明的催化剂适用于产生甲基丙烯酸甲酯(MMA)的方法中，所述方法包含在氧化酯化反应器中用甲醇处理甲基丙烯醛。

유무기 복합 촉매, 이를 포함하는 공기정화장치, 및 이의 재생 방법

다공성 탄소계 입자; 및 상기 다공성 탄소계 입자 상에 담지된 제1 화합물 및 금속산화물 입자를 포함하며, 상기 제1 화합물이 극성 작용기 또는 음이온을 함유하며, 상기 금속산화물이 화학식 M a O b (0<a≤4, 0<b≤5, M은 원소주기율표 제2족 내지 제16족 중에서 선택된 하나 이상의 금속)로 표시되며, 제2 화합물을 포함하는 정화되지 않은 공기 흐름으로부터 상기 제2 화합물을 제거하도록 구성되는(configured), 유무기 복합 촉매(organic-inorganic composite catalyst), 이를 포함하는 공기정화장치 및 이의 재생방법이 제공된다.

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Iridium-manganese oxide composite material, iridium-manganese oxide composite electrode material and methods for producing the same

Provided are an iridium-manganese oxide composite material and an iridium-manganese oxide composite electrode material which are used as positive electrode catalysts for oxygen generation in water electrolysis, which are inexpensive, and which have high catalytic activity. Also provided are methods for producing these materials. The iridium-manganese oxide composite material is characterized in that iridium is distributed over the surface of a manganese oxide and the iridium has a metallic valence of 3.1-3.8. The iridium-manganese oxide composite electrode material contains an electrically conductive base material constituted by fibers at least partially covered with the iridium-manganese oxide composite material.

Zsm-23 molecular sieve and preparation method therefor

The present invention discloses a ZSM-23 zeolite and a process for preparing the same and use thereof. The total acid amount of said ZSM-23 zeolite is 0.05-0.25 mmol/g, preferably, 0.06-0.22 mmol/g, more preferably, 0.06-0.20 mmol/g; the strong acid content of said ZSM-23 zeolite is 5-33%, preferably, 7-33%, more preferably, 9-33%, or further preferably, 7-31%, further more preferably, 10-28% of the total acid amount; wherein the strong acid refers to an acid having a desorption temperature of 350°C or higher in an NH3 temperature programmed desorption (NH3-TPD). The ZSM-23 zeolite has a low strong acid content, and the preparation process of the ZSM-23 zeolite is simple.

Zsm-23 zeolite and preparation process and use thereof

A ZSM-23 zeolite and a process for preparing the same and use thereof are provided. The total acid amount of the ZSM-23 zeolite is 0.05-0.25 mmol/g, preferably 0.06-0.22 mmol/g, more preferably 0.06-0.20 mmol/g. The strong acid content of the ZSM-23 zeolite is 5-33%, preferably 7-33%, more preferably 9-33%, or further preferably 7-31%, further more preferably 10-28% of the total acid amount. The strong acid refers to an acid having a desorption temperature of 350° C. or higher in an NH3 temperature programmed desorption (NH3-TPD). The ZSM- 23 zeolite has a low strong acid content.

Hierarchically ordered crystalline microporous materials with long-range mesoporous order having hexagonal symmetry

A composition of matter is provided comprising hierarchically ordered crystalline microporous material having well-defined long-range mesoporous ordering of hexagonal symmetry. The composition possesses mesopores having walls of crystalline microporous material and a mass of mesostructure between mesopores of crystalline microporous material. Long-range ordering is defined by presence of secondary peaks in an X-ray diffraction (XRD) pattern and/or hexagonal symmetry observable by microscopy.

Copper-based catalyst for reverse water gas shift reaction including gas-permeable amorphous shell formed by strong metal-support interaction

The present disclosure relates to a copper-based catalyst for reverse water gas reaction including a gas-permeable amorphous shell formed by strong metal-support interaction. The inventors of the present disclosure synthesized a copper-ceria solid solution and then adjusted the surface defect sites of the solid solution, thereby producing a catalyst including enhanced surface defect sites and having a gas-permeable amorphous shell structure formed on each copper particle. When the catalyst production method according to the present disclosure is used, it is possible to synthesize a catalyst including a structure consisting only of very small Cu particles encapsulated by surface shells and Cu sites incorporated into the CeO2 lattice structure. When the synthesized catalyst is used in the RWGS reaction, it exhibits excellent low-temperature activity, high activity and durability, compared to conventional precious metal catalysts. In addition, even when the catalyst of the present disclosure is supported on a monolith and used to perform the RWGS reaction on a bench scale, it exhibits high activity, CO2 conversion and durability, which are comparable with those in the laboratory scale, indicating that it may be applied to an actual process.

Catalyst for production of carboxylic acid ester, method for producing carboxylic acid ester, and method for producing catalyst for production of carboxylic acid ester

Preparing method of catalyst for preparing low-diameter carbon nanotube and preparing method of carbon nanotube using same

An embodiment of the present specification provides a method for preparing a catalyst for preparing a carbon nanotube, comprising: (a) dissolving a main catalyst precursor, a support precursor, a cocatalyst precursor and a precipitation inhibitor in a solvent to prepare a precursor solution; and (b) pyrolyzing the precursor solution by spraying the precursor solution into a reactor, wherein a mole fraction of the precipitation inhibitor to the cocatalyst precursor is 0.1 to 1.5.

Preparing method of catalyst for preparing low-diameter carbon nanotube and preparing method of carbon nanotube using same

A method for preparing a catalyst for preparing a carbon nanotube, comprises: (a) dissolving a main catalyst precursor, a support precursor, a cocatalyst precursor and a precipitation inhibitor in a solvent to prepare a precursor solution; and (b) pyrolyzing the precursor solution by spraying the precursor solution into a reactor, wherein a mole fraction of the precipitation inhibitor to the cocatalyst precursor is 0.1 to 1.5. Further disclosed are a catalyst for preparing a carbon nanotube, a method for preparing a carbon nanotube, and a carbon nanotube.

小直径炭素ナノチューブ製造用触媒の製造方法およびこれを利用した炭素ナノチューブの製造方法

【課題】小直径炭素ナノチューブを合成できる炭素ナノチューブ製造用触媒、およびこの製造方法を提供する。【解決手段】一実施例として（ａ）主触媒前駆体、支持体前駆体、助触媒前駆体および析出抑制剤を溶媒中に溶解させて前駆体溶液を製造する段階；および（ｂ）前記前駆体溶液を反応器の内部に噴霧して熱分解する段階；を含み、前記助触媒前駆体対比前記析出抑制剤のモル分率は０．１～１．５である、炭素ナノチューブ製造用触媒の製造方法とする。【選択図】図１

A method for the production of a pyrolysis oil from end-of-life plastics

触媒、ハニカム構造体および排ガス浄化装置

Catalyst, honeycomb structure, and exhaust gas purification device

저직경 탄소나노튜브 제조용 촉매의 제조방법 및 이를 이용한 탄소나노튜브의 제조방법

본 명세서의 일 실시예는 (a) 주촉매 전구체, 지지체 전구체, 조촉매 전구체 및 석출억제제를 용매 중에 용해시켜 전구체 용액을 제조하는 단계; 및 (b) 상기 전구체 용액을 반응기 내부로 분무하여 열분해하는 단계;를 포함하고, 상기 조촉매 전구체 대비 상기 석출억제제의 몰분율은 0.1~1.5인, 탄소나노튜브 제조용 촉매의 제조방법을 제공한다.

Catalyst for selective ring-opening reaction and method of using same

Proposed are an unsupported metallic catalyst for a selective ring-opening (SRO) reaction and a method of using the same catalyst, wherein the catalyst contains nickel (Ni), molybdenum (Mo), and tungsten (W).

A catalyst composition and processes thereof

The present disclosure provides a composition comprising: (a) 1 to 20% (w/w) indium; (b) 40 to 60% (w/w) of iron oxide; (c) 1 to 5% (w/w) of potassium; and (d) 35 to 40% (w/w) alumina. The present disclosure further provides a convenient process for 5 preparing the composition. The composition of the present disclosure is a hydrogenation catalyst. Furthermore, the present disclosure provides a process for hydrogenation of carbon dioxide to higher alcohols.

Heteroatom zeolite manufacture using an electrolytic cell

Present invention generally concerns a novel use of electro-assisted synthesis apparatus to manufacture of heteroatom zeolites with good metal incorporation, for instance Sn- zeolites, Ti-zeolites, Zn-zeolites, Fe-zeolites or Al-zeolites with a higher metal load than reached by the current state of the art heteroatom zeolites synthesis method. More particularly, it relates to heteroatom zeolites that are the reaction product of gradual metal incorporation in zeolites during the zeolite synthesis process the metal originating from an in-situ anodic oxidation.

Zirconium doped terbium nano oxides for wastewater remediation

Zirconium doped terbium nano oxides (ZrTb 2 O 3 ). The nano oxides can have an average diameter ranging from about 17 nm to about 22 nm. The nano oxides can be used as a photocatalyst for photodegradation of organic dyes. In an embodiment, the organic dyes include textile wastewater dyes. In an embodiment, the textile wastewater dyes include methylene blue (MB) and/or Congo Red (CR). In an embodiment, the zirconium doped terbium nano oxides (ZrTb 2 O 3 ) can be prepared by a dual co-precipitation and calcination method.

Method of forming metal oxide nanostructures on a TiO2—ZnO-buffered substrate

A method of forming TiO2—ZnO nanoparticles coated by a copper (II) complex includes forming a mononuclear copper complex by treating a ligand with Cu2+ ions; and immobilizing the mononuclear copper complex on TiO2—ZnO nanoparticles to obtain the TiO2—ZnO nanoparticle coated by the copper (II) complex. The TiO2—ZnO nanoparticles coated by a copper (II) complex thus produced have improved catalytic effectiveness and increased efficiency by reducing catalytic reaction time and temperature, particularly in methods of catalyzing oxidation of an alcohol or of catalyzing decarboxylative bromination of an acid.

Method of forming metal oxide nanostructures on a TiO2-ZnO-buffered substrate

A method of forming TiO2—ZnO nanoparticles coated by a copper (II) complex includes forming a mononuclear copper complex by treating a ligand with Cu2+ ions; and immobilizing the mononuclear copper complex on TiO2—ZnO nanoparticles to obtain the TiO2—ZnO nanoparticle coated by the copper (II) complex. The TiO2—ZnO nanoparticles coated by a copper (II) complex thus produced have improved catalytic effectiveness and increased efficiency by reducing catalytic reaction time and temperature, particularly in methods of catalyzing oxidation of an alcohol or of catalyzing decarboxylative bromination of an acid.

A novel biorefinery method of making green graphite products

The invention relates to a novel cascaded biorefinery method of making green practical graphite products, more specifically, to the method of making a graphite product from biomass comprising biomass pyrolysis to produce biochar and biooil, catalytic graphitization of the biochar to produce a graphite powder, shaping the graphite powder with the use of a binder and subjecting the shaped product to heat treatment, wherein the binder comprises the heavy fraction of the biooil subjected to heat treatment The invention also relates to a graphite product produced by the method.

选择性开环反应用催化剂及其使用方法

本发明提供一种SRO反应用金属复合体催化剂，作为SRO反应用金属复合体催化剂含镍；钼；及钨，所述催化剂为非载体催化剂，并且提供一种利用所述催化剂的方法。利用本发明的催化剂可进一步提高润滑基础油的VI。

Catalyst for selective ring-opening reaction and method of using same

Proposed are an unsupported metallic catalyst for a selective ring-opening (SRO) reaction and a method of using the same catalyst, wherein the catalyst contains nickel (Ni), molybdenum (Mo), and tungsten (W).

Hydrogenation catalyst and preparation method therefor and use thereof

Catalytic cavitation-inducing agents for sonochemistry

The invention concerns a sonocatalyst which is suitable for promoting a chemical reaction initiated by ultrasound irradiation. The invention also relates to a method of catalysing a reaction by exposing the sonocatalyst to ultrasound. The invention also relates to the use of a sonocatalyst as described herein in a method as described herein. The invention also concerns an apparatus comprising the sonocatalyst of the invention, which may be used to perform a method of the invention

Method of forming metal oxide nanostructures on a TiO2-ZnO-buffered substrate

A method of forming TiO2—ZnO nanoparticles coated by a copper (II) complex includes forming a mononuclear copper complex by treating a ligand with Cu2+ ions; and immobilizing the mononuclear copper complex on TiO2—ZnO nanoparticles to obtain the TiO2—ZnO nanoparticle coated by the copper (II) complex. The TiO2—ZnO nanoparticles coated by a copper (II) complex thus produced have improved catalytic effectiveness and increased efficiency by reducing catalytic reaction time and temperature, particularly in methods of catalyzing oxidation of an alcohol or of catalyzing decarboxylative bromination of an acid.

Catalyst structure for synthesis gas production, synthesis gas production device, and method for producing catalyst structure for synthesis gas production

A catalyst structure for synthesis gas production is used to produce a synthesis gas that includes carbon monoxide and hydrogen. The structure includes a carrier with a porous structure that comprises a zeolite-type compound; first catalyst particles that contain at least one iron-group element selected from the group consisting of nickel, iron, and cobalt; and a second catalyst that contains at least one transition metal element with redox capacity. The carrier includes, inside thereof, mutually communicating passages; the first catalyst particles are present at least in the passages of the carrier; and the second catalyst is present at least in the interior or on an outer surface of the carrier.

Organic-inorganic composite catalyst, air purification device including the organic-inorganic composite catalyst, and method of regenerating the organic-inorganic composite catalyst

An organic-inorganic composite catalyst wherein the organic-inorganic composite catalyst includes a porous carbonaceous particle, a first compound; and a metal oxide particle, wherein the first compound and the metal oxide particle are supported on the porous carbonaceous particle, the first compound contains a polar functional group, an anion, or a combination thereof, the metal oxide is represented by the formula MaOb, wherein 0<a≤4, 0<b≤5, and M is a metal of Groups 2 to 16 of the Periodic Table of Elements, or a combination thereof, and the organic-inorganic composite catalyst is configured to remove a second compound from an unpurified air flow including the second compound.

Preparing method of catalyst for preparing low-diameter carbon nanotube and preparing method of carbon nanotube using same

An embodiment of the present specification provides a method for preparing a catalyst for preparing a carbon nanotube, comprising: (a) dissolving a main catalyst precursor, a support precursor, a cocatalyst precursor and a precipitation inhibitor in a solvent to prepare a precursor solution; and (b) pyrolyzing the precursor solution by spraying the precursor solution into a reactor, wherein a mole fraction of the precipitation inhibitor to the cocatalyst precursor is 0.1 to 1.5.

Photocatalytic co2 conversion via hydrogenation with co-catalyst-decorated nanostructures

A catalytic device includes a substrate and an array of conductive projections supported by the substrate and extending outward from the substrate. Each conductive projection of the array of conductive projections is decorated with a co-catalyst arrangement, the co-catalyst arrangement being configured to convert carbon dioxide (CO 2 ) via hydrogenation in aqueous solution.

Carbon Dioxide Methanation Catalyst Molded Body and Method for Producing the Same

Provided is a molded catalyst serving as a methanation catalyst that supports ruthenium as an activated metal, and has high activity at low temperatures, sufficient strength for industrial use, and heat resistance under high temperature and high water vapor pressure conditions. Provided is a carbon dioxide methanation catalyst molded body including an activated alumina molded body, and zirconia and ruthenium supported on the activated alumina molded body, in which the amount of zirconia supported is 3 to 10 parts by mass with respect to 100 parts by mass of the activated alumina molded body, the amount of ruthenium supported is 0.1 to 5 parts by mass per 100 parts by mass of the activated alumina molded body, and the carbon dioxide methanation catalyst molded body is a molded body having a particle diameter of 2 to 20 mm.

Amorphous cobalt-inherent silicon oxide catalyst

Claimed herein is a method of applying amorphous Co—SiOx to activate PMS and produce SO4·− due to the formation of Co(II)-Ov, pairs via the substitution of Si by Co. The inherent Co significantly change the electronic structure of O and Si atoms in the Co—SiOx via final state effects and increase the conductivity in terms of more effective electron transfers. The claimed method using Co—SiOx functions as a more effective oxidative catalyst for the faster degradation of pollutants. The simplicity of the synthetic procedures indicates that the conductive Co—SiOx could be used for the activation of PMS and other electrochemical applications on a wider scale.

Amorphous cobalt-inherent silicon oxide catalyst

Claimed herein is a method of applying amorphous Co—SiOx to activate PMS and produce SO4.− due to the formation of Co(II)-Ov, pairs via the substitution of Si by Co. The inherent Co significantly change the electronic structure of O and Si atoms in the Co—SiOx via final state effects and increase the conductivity in terms of more effective electron transfers. The claimed method using Co—SiOx functions as a more effective oxidative catalyst for the faster degradation of pollutants. The simplicity of the synthetic procedures indicates that the conductive Co—SiOx could be used for the activation of PMS and other electrochemical applications on a wider scale.

微細金属粒子の製造方法

【課題】金属をサブミクロンオーダーの粒径まで微粒化することができる微細金属粒子の製造方法を提供する。【解決手段】微細金属粒子の製造方法は、金属粒子を準備するステップと、炭化水素を含む供給ガスを金属粒子に供給するステップとを含み、供給ガスと金属粒子との接触は６００℃～９００℃の温度で行われる。【選択図】図１

微細金屬粒子之製造方法

本發明之微細金屬粒子之製造方法包含準備金屬粒子之步驟，及將包含烴之供給氣體供給至金屬粒子之步驟，供給氣體與金屬粒子之接觸係於600℃~900℃之溫度進行。

Production method for fine metal particles

A production method for fine metal particles, including a step for preparing metal particles, and a step for supplying the metal particles with a feed gas including a hydrocarbon, wherein the contacting of the feed gas and the metal particles is carried out at a temperature of 600-900°C.

미세 금속 입자의 제조방법

미세 금속 입자의 제조방법은 금속 입자를 준비하는 단계와, 탄화수소를 포함하는 공급 가스를 금속 입자에 공급하는 단계를 포함하고, 공급 가스와 금속 입자와의 접촉은 600℃∼900℃의 온도에서 행해진다.

Catalyst composition, and method of preparation of the same, for hydro-conversion of lco involving partial ring opening of poly-aromatics

Co-deflagration synthesis of metallic, ceramic, and mixed ceramic-metallic particles

A co-deflagration process for the preparation of metallic, ceramic, or mixed ceramic-metallic particles optionally impregnated within or attached to a metallic, ceramic, or mixed ceramic-metallic support material includes mixing at least two components. Each of the components can be any of a nitrogen-rich ligand or a salt thereof, a complex or coordination polymer of the nitrogen-rich ligand or salt thereof with one of the at least one metal, and a cluster of the at least one metal, and optionally an organic or inorganic oxidant, gas generator, pyrotechnic, propellant, and/or explosive.

금속 촉매가 코팅된 탄소섬유의 제조방법 및 이에 의해 제조되는 전극 제조용 탄소섬유

본 발명은 탄소섬유 전구체 및 유기용매를 포함하는 전구체 섬유를 제조하는 단계; 상기 전구체 섬유를 금속 이온 형태 또는 금속 이온에 리간드가 결합된 형태의 금속 촉매를 포함하는 코팅 용액에 함침시키는 단계; 상기 코팅 용액에 함침된 상기 전구체 섬유를 가열 연신하여 상기 금속 촉매를 코팅하는 단계; 및 상기 금속 촉매가 코팅된 상기 전구체 섬유를 불활성 기체 분위기 하에서 열처리하는 단계를 포함한다. 본 발명에 의하면, 금속 이온 형태 또는 금속 이온에 리간드가 결합된 형태의 금속 촉매를 고분자 탄소섬유의 표면 상에 코팅하여 제조함에 따라, 형태학적으로 균일하고 우수한 기계적 물성 및 전기화학적 특성을 나타내는 탄소섬유를 제조할 수 있다.

Method for making magnetic nanoparticle supported catalysts

A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.

효소 매입형 공유결합성 유기 골격체 및 이의 제조방법

효소 매입형 공유결합성 유기 골격체 및 이의 제조방법이 제공된다. 이에 의하면, 타겟된 효소 및 공유결합성 유기 골격체 내 기공 크기를 고려하지 않고 공유결합성 유기 골격체의 내부에 타겟된 효소를 높은 로딩량으로 구비시킴과 동시에 구비된 효소의 활성 상실이 최소화 또는 방지되고, 효소를 함유에도 공유결합성 유기 골격체 본래의 결정구조, 비표면적, 기공률 등에 영향이 최소화도록 공유결합성 유기 골격체를 제조할 수 있다.

유기오염물질 분해를 위한 하드 템플릿 방법을 이용한 흑연질화탄소의 제조 방법

본 출원은 촉매의 활성 부위, 광 흡수 효율 및 전하 분리 능력을 동시에 향상시키기 위해 질소 결함이 있는 나노구조의 다공성 흑연질화탄소의 제조 방법에 관한 것이다.

이산화티타늄 복합체 및 이의 제조 방법

본원은 아나타제상 및 루타일상을 포함하며, 상기 아나타제상 및 상기 루타일상 중 어느 하나가 선택적으로 환원된 것인 환원된 이산화티타늄; 및 상기 환원된 이산화티타늄과 결합한 금속 산화물을 포함하는 이산화티타늄 복합체에 관한 것이다.

이산화티타늄 복합체 및 이의 제조 방법

본원은 아나타제상 및 루타일상을 포함하며, 상기 아나타제상 및 상기 루타일상 중 어느 하나가 선택적으로 환원된 것인 환원된 이산화티타늄; 및 상기 환원된 이산화티타늄과 결합한 금속 산화물을 포함하는 이산화티타늄 복합체에 관한 것이다.

이산화티타늄 복합체 및 이의 제조 방법

본원은 아나타제상 및 루타일상을 포함하며, 상기 아나타제상 및 상기 루타일상 중 어느 하나가 선택적으로 환원된 것인 환원된 이산화티타늄; 및 상기 환원된 이산화티타늄과 결합한 금속 산화물을 포함하는 이산화티타늄 복합체에 관한 것이다.

Disproportionation and transalkylation catalyst, and preparation and application thereof

Method of catalytic hydrogenation and reduction

Provided is a method of catalytic hydrogenation and reduction with which a catalytic hydrogenation and reduction reaction can be performed at a high inversion rate. A method of catalytic hydrogenation and reduction in which a reactive substrate and a hydrogen source are brought into contact in the presence of a platinum-group metal-supported catalyst to run the reactive substrate through catalytic hydrogenation and reduction, wherein: the platinum-group metal-supported catalyst comprises an ion exchanger supporting platinum-group metal ions, platinum-group metal complex ions, and/or platinum-group metal nanoparticles having an average particle size in the range of 1-100 nm; the ion exchanger is made of a continuous skeleton phase and a continuous hole phase; the thickness of the continuous skeleton is in the range of 1-100 µm; the average diameter of the continuous holes is in the range of 1-1000 µm; the total pore volume is in the range of 0.5-50 mL/g; the ion exchange capacity per unit weight in a dry state is in the range of 1-9 mg eq/g; and the ion exchanger is a non-particulate, weakly basic, organic porous ion exchanger where an ion exchange group is distributed in the ion exchanger.

Crystalline metallophosphates, their method of preparation, and use

A material comprising geminal metal atom pairs supported on a carrier and related methods thereto

There is provided a material comprising a plurality of geminal metal atom pairs supported on a polymeric carrier, and a method of preparing said material. In a particular embodiment, the material comprises a plurality of copper atom pairs supported on a polymeric carbon nitride (PCN) carrier. There is also provided a catalyst comprising said material, and a method of catalyzing coupling reactions.

Composite material, its manufacturing, generation and use in methane cracking

Here disclosed is a composite catalyst for methane cracking and a method of producing the composite catalyst. The composite catalyst includes a substrate formed of metal oxide, and one or more catalytic transition metals solubilized in the metal oxide, wherein the metal oxide includes a metal which differs from the one or more catalytic transition metals, wherein the metal oxide forms a matrix which the one or more catalytic transition metals are solubilized in to render transition metal ions from the one or more catalytic transition metals, wherein the transition metal ions under a reducing atmosphere diffuse to reside as transition metal nanoparticles at a surface of the substrate and the transition metal nanoparticles under an oxidizing atmosphere diffuse away from the surface to reside as transition metal ions in the metal oxide, and wherein the transition metal nanoparticles at the surface induce carbon from the methane cracking to deposit on the transition metal nanoparticles and have the carbon deposited grow away from the substrate.

Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres

A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dioxide or a dealuminized zeolite in the acid H form with a modulus of more than 20, preferably more than 100, or mixtures thereof are used as support materials. Iridium is deposited on the external surfaces of these support materials with average particle sizes between 10 and 30 nm. The catalyst is particularly suitable for treating exhaust gases from lean-burn gasoline engines or from diesel engines.

Production method for fine metal particles

A production method for fine metal particles includes a step of preparing metal particles and a step of supplying the metal particles with a feed gas containing a hydrocarbon, wherein the contact between the feed gas and the metal particles is carried out at a temperature of 600°C to 900°C.

Catalyst for hydrogen peroxide synthesis and regeneration

Described is a catalyst obtained by supporting magnesium and cerium on activated alumina, firing same to immobilize the metals, and then impregnating same with palladium and performing reduction thereon, and is applied, when hydrogen peroxide is prepared by means of an anthraquinone process, to operation solution regeneration or hydrogenation, and thus an efficient regeneration conversion rate or synthesis yield is achieved.

Low-temperature and high-efficiency ammonia decomposition catalyst, preparation method and application thereof

A low-temperature and high-efficiency ammonia decomposition catalyst is disclosed, which includes a support and an active component. The support is SBA-15/G and the active component is nickel. The preparation method of the low-temperature and high-efficiency ammonia decomposition catalyst includes the following steps. Ni(OH)2 is mixed with SBA-15/G composite support by simple mechanical mixing method. Then, Ni/SBA-15/G supported catalyst is prepared by calcination in ammonia atmosphere. The ammonia decomposition activity of prepared materials at low-temperature is higher than that of most current Ni-based catalysts, and the method has the advantages of simple preparation process and low cost, and exhibits high catalytic activity and stability in the ammonia decomposition reaction.