Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 35. Отображено 35.
05-07-2018 дата публикации

CATALYST FOR PREPARING HYDROCARBONS FROM CARBON DIOXIDE BY ONE-STEP HYDROGENATION AND METHOD FOR PREPARING SAME

Номер: WO2018120576A1
Принадлежит:

Disclosed are a catalyst for preparing hydrocarbons from carbon dioxide by one-step hydrogenation and a method for preparing same. The catalyst comprises nano-metal oxides and zeolite molecular sieves with hierarchical pores, wherein the mass fraction of the nano-metal oxides in the catalyst is 10%-90%, and the mass fraction of the molecular sieves with hierarchical pores in the catalyst is 10%-90%. The catalyst has an excellent catalytic performance, a good reaction stability and a high selectivity for target products, and in the hydrocarbon products, C2=-C4= accounts for up to 80%, C5+ accounts for 80%, and aromatic hydrocarbons account for up to 65%.

Подробнее
23-08-2018 дата публикации

PRECIOUS METAL CATALYST LOADED BY METAL OXIDE, PREPARATION METHOD, AND USES

Номер: WO2018150284A1
Принадлежит:

The present invention provides a precious metal catalyst loaded by a metal oxide, a preparation method, and applications. The precious metal catalyst comprises the following components: a precious metal, an oxide of the precious metal, and a metal oxide. In the precious metal catalyst loaded by a metal oxide, the ratio of the mass of the precious metal to the total mass of the precious metal and the metal oxide is -1 to 10:100, and the precious metal catalyst loaded by a metal oxide is of a two-dimensional structure. The preparation method in the present invention is easy to operate, the prepared catalyst has uniform morphology and good stability; and when the catalyst is applied in a methane combustion reaction, the conversion rate of methane reaches 100% when the reaction temperature of C¾ below 400ºC, and a good low-temperature oxidization activity of the methane is provided. In addition, the precious metal catalyst loaded by a metal oxide has the advantages of good stability, a long ...

Подробнее
28-01-2004 дата публикации

一种用于费托合成产物重质烃制汽油的催化剂及其制备方法和用途

Номер: CN0001136297C
Принадлежит:

... 一种用于费托合成产物重质烃制汽油的催化剂重量百分比组成为Y沸石30~60%,氧化钨或氧化钼15~30%,氧化镍3~10%,氧化铝20~50%。本发明加氢裂化催化剂具有比表面300~600m#+[2]/g,孔容0.40~0.80ml/g,TPD酸度0.80~2.0mmol/g的特征。本发明催化剂具有催化裂化费托合成重质烃类物料的同时,对产物进行异构化,产品中芳烃和环烷烃含量总和小于2.5%,催化剂制备过程简单、方便,易于操作,适合于工业生产的优点。 ...

Подробнее
28-01-2004 дата публикации

中温异构化催化剂及其制备方法

Номер: CN0001136051C
Принадлежит:

... 一种中温异构化催化剂,具体地说涉及用几种杂原子氧化物(M=Nd、Ce、U或Cr)改性的Pt/Hβ催化剂,所述催化剂的组成成分及范围(重量比)为:Pt0.3 杂原子氧化物 1-25 Hβ75-99。所述催化剂采用机械混合法和浸渍法制备。本催化剂可明显提高轻烃(如n-C#-[7])的中温(240-280℃)异构化选择性,同时保持较高的转化活性,尤其在280℃时此效果更为显著。 ...

Подробнее
02-06-2004 дата публикации

一种甲醇合成催化剂

Номер: CN0001151874C
Принадлежит:

... 一种甲醇合成催化剂,催化剂的摩尔比组成为:Zr:40~60%;Cu:20~40%;M#-[A]:10%~20%;Ni1~30%;其中M#-[A]是碱金属、碱土金属及过渡元素中的一种或几种元素的组合。制备方法是:按比例除Zr以氧氯化锆的形式,其余元素均以硝酸盐的形式溶于蒸馏水中,形成5~30%的混合溶液,在60~90℃下与碳酸钠溶液共沉淀,沉淀过程需充分搅拌,保持pH=9~12,沉淀经蒸馏水洗涤至无氯离子检出为止,M#-[A]助剂以柠檬酸盐、碳酸盐、草酸盐或硝酸盐的形式浸渍方法加入,浸渍时间1小时,然后在80~160℃下干燥和200~750℃焙烧,破碎至20~40目,制得催化剂。本发明的制备方法简单,易于操作,机械强度好,大大降低了操作费用。 ...

Подробнее
17-11-2004 дата публикации

一种合成丙二醇醚的固体催化剂及制备方法和应用

Номер: CN0001546227A
Принадлежит:

The invention is a kind of solid catalyst for synthesizing propylene-glycol ether, which is a kind of ZnO/active carbon catalyst by using zinc nitrate and zinc acetate solvent to soak the active carbon, bakes them for 12 hours under temperature of 110oC, and roasted them under temperature of 400 oC-600 oC in nitrogen for four hours. The manufacturing method of the catalyst is simple, the operation is easy, and it won't be contaminated by carbon dioxide and water, and the epoxy demethylmethane percent conversion is high, the isomerous rate of the first and the second ether.

Подробнее
02-11-2017 дата публикации

SUPPORTED COBALTOSIC OXIDE CATALYST, AND PREPARATION METHOD AND USE THEREFOR

Номер: WO2017187400A1
Принадлежит:

A supported cobaltosic oxide catalyst, and a preparation method and a use therefor are disclosed in the present invention. The supported cobaltosic oxide catalyst comprises the following components: a noble metal, a noble metal oxide and a cobaltosic oxide, the ratio of the mass of noble metal elements to the total mass of noble metal elements and Co3O4 being 1-10:100, and the supported cobaltosic oxide catalyst being a one-dimensional structure. The preparation method being: in a diol system, coprecipitating cobalt salts and an aqueous deposition solution, then adding a noble metal saline solution, and then hydroheating, drying, and calcining to obtain the supported cobaltosic oxide catalyst, coprecipitation and hydrothermal synthesis both being used to prepare said catalyst. The preparation method is easy to carry out, and the catalyst obtained is uniform and stable. When used in a methane catalytic combustion reaction, the catalyst allows potentially for a 100% methane conversion rate ...

Подробнее
16-01-2020 дата публикации

METHOD AND DEVICE FOR BIOMASS PYROLYSIS AND LOW TEMPERATURE TAR REMOVAL BASED ON MICROWAVE HOTSPOT

Номер: WO2020010675A1
Принадлежит:

Provided are a method and device for biomass pyrolysis and low temperature tar removal based on a microwave hotspot, the method including the following steps: 1) under anaerobic conditions, pyrolyzing a first biomass to obtain a solid biochar bed; 2) under anaerobic conditions, subjecting the biochar bed layer obtained in step 1) to microwave heating to form a microwave hot spot region; and 3) under anaerobic conditions, adding a second biomass to form a biomass pyrolysis bed layer above the biochar bed layer, pyrolyzing same, and then in situ removing tar from the biochar bed layer across the microwave hot spot region. In the present invention, microwaves are is used as a heating means, and a high ash biochar generated by pyrolysis is used as a catalyst for tar removal and as a carrier for microwave hot spot generation to form a high temperature microwave hotspot region having both a microwave field and a catalytic performance on the surface of the biochar. After biomass pyrolysis tar ...

Подробнее
12-10-2017 дата публикации

COBALT CARBIDE-BASED CATALYST FOR DIRECT PREPARATION OF OLEFIN FORM SYNTHESIS GAS, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Номер: WO2017173791A1
Принадлежит:

A cobalt carbide-based catalyst for direct preparation of olefin from syngas, as well as a preparation method therefor and an application thereof. The method for preparing the catalyst comprises the following steps: mixing a cobalt source with water or a cobalt source, an electron additive and water to obtain a first solution; mixing a precipitant with water to obtain a second solution; 2) adding the first solution and the second solution to water, or water and a structural additive, for precipitation, crystallization, separation, drying and calcination; and 3) reducing a solid obtained in step 2) in a reducing atmosphere, and then carbonizing in a carbonizing atmosphere. The prepared catalyst has good selectivity and high conversion rate in the reaction of olefin preparation by direct conversion of syngas.

Подробнее
22-09-2004 дата публикации

抗激光损伤宽谱带减反膜的制备方法

Номер: CN0001167959C
Принадлежит:

... 一种抗激光损伤宽谱带减反膜的制备方法是以正硅酸乙酯为前驱体,在氨水催化条件下,按比例加入水、无水乙醇、聚乙烯吡咯烷酮和聚乙二醇,混和后充分搅拌进行反应、陈化、镀膜。具有制备条件温和,成本较低,操作简单,使制备出的SiO#-[2]膜不仅有宽度达400-600nm宽谱带减反性能,同时具有高抗激光损伤的优点。 ...

Подробнее
04-02-2004 дата публикации

一种用于环加成制碳酸丙(乙)烯酯的催化剂

Номер: CN0001136981C
Принадлежит:

... 一种用于环加成制碳酸丙(乙)烯酯的催化剂,原料催化剂的各组份重量百分比为:KI 10-65%,LiNO#-[3] 1-35%,活性炭或SiO#-[2]34-88%。本发明催化剂原料成本低,制造简单,并且可反复使用。在环加成反应中,反应条件温和,易与反应产物分离,可大大降低碳酸丙(乙)烯酯的制造成本。 ...

Подробнее
04-02-2004 дата публикации

制备巯基官能化MCM-48介孔分子筛的方法

Номер: CN0001136960C
Принадлежит:

... 一种制备巯基官能化MCM-48介孔分子筛的方法是将巯丙基三甲氧基硅烷溶解于甲苯中,再加入经过焙烧的MCM-48分子筛,回流12~24小时;产物经离心分离后,用甲苯洗涤直至无未反应的巯丙基三甲氧基硅烷存在,于100℃-120℃下烘干,得到巯基官能化的MCM-48分子筛;具有巯基官能化的产品具有三维孔道结构,不易堵塞,对汞离子的吸附效果好的优点。 ...

Подробнее
26-05-2004 дата публикации

一种有机官能化硅基中孔材料的制备方法

Номер: CN0001150977C
Принадлежит:

... 一种官能化硅基中孔材料的制备方法是在中性长链有机模板剂存在下,几种烷基有机硅氧烷(RTES)与硅酸钠分别在水体系,中等酸性条件下于不同温度共水解缩聚直接合成带有相应有机基团的硅基中孔材料。原料各组分摩尔比为:Na#-[2]SiO#-[3]・9H#-[2]O∶RTES∶AEO#-[9]∶NaF∶H#-[2]O=(9.6-9.9)∶(0.1-0.4)∶(0.125)∶(0.04-0.16)∶(347)。合成过程简单,选用廉价硅酸钠为前驱体,有利于材料的大规模生产与应用。采用廉价、无毒、可生物降解的中性表面活性剂为模板剂,有利于环境保护。合成中通过反应参数简单的调变,可以在一定范围内调控材料的组成与结构。 ...

Подробнее
02-08-2018 дата публикации

PREPARATION METHOD AND APPLICATION OF SUPPORTED NOBLE METAL TRICOBALT TETRAOXIDE NANOCATALYST

Номер: WO2018138618A1
Принадлежит:

The present invention provides a multi-component supported noble metal tricobalt tetraoxide nanocatalyst loaded on an oxide carrier, a preparation method and an application. Firstly, a co-precipitation method is utilized; in an ethylene glycol system, a noble metal seed crystal is loaded on an alkaline cobalt carbonate nanoparticle precursor; after reaction, the reacted product is centrifugally dried to obtain supported noble metal tricobalt tetraoxide nanoparticles. The present invention can be used to synthesize a supported noble metal tricobalt tetraoxide having a heterostructure, thus affecting the nature and composition of active catalyst sites of the supported noble metal tricobalt tetraoxide. The material obtained from the preparation is further loaded on an oxide carrier by using a liquid-phase mixing method, so as to increase dispersion of the supported noble metal tricobalt tetraoxide nanoparticles, and to reduce cost issues resulting from the presence of noble metals. The preparation ...

Подробнее
23-06-2023 дата публикации

Catalyst for preparing synthesis gas by reforming methane and carbon dioxide through photo-thermal catalysis as well as preparation method and application of catalyst

Номер: CN116273054A
Принадлежит:

The invention provides a catalyst for preparing synthesis gas by reforming methane and carbon dioxide through photo-thermal catalysis, a preparation method and application of the catalyst, the catalyst is a RuAx/B catalyst, and a component A comprises one or a combination of IB, IIB, IVB, VB, VIB, VIIB and VIII group metals and lanthanide series metals; x is in the range of 0.001 to 100; the carrier B comprises one or a combination of silicon oxide, aluminum oxide, titanium oxide, cerium oxide, manganese oxide, zinc oxide, zirconium oxide, magnesium-aluminum hydrotalcite and a carbon material. The preparation method of the catalyst comprises the following steps: forming a RuA mixed solution from a ruthenium source and a component A, impregnating the RuA mixed solution on a carrier B, or precipitating the RuA mixed solution on the carrier B in a deposition and precipitation manner, and controlling various parameters in the preparation process to prepare the catalyst. The catalyst provided ...

Подробнее
18-02-2004 дата публикации

一种合成氨基甲酸甲酯的方法

Номер: CN0001475481A
Принадлежит:

A process for synthesizing methyl aminoformate includes the catalytic reaction between methanol, urea and catalyst at 120-200 deg.C, under 0.1-3 MPa for 0.5-20 hr and condensing and recovering ammonia gas. Its advantages are low cost and high selectivity to product.

Подробнее
24-11-2004 дата публикации

一种合成碳酸二甲酯的催化剂及制法和用途

Номер: CN0001176751C
Принадлежит:

... 一种合成碳酸二甲酯的催化剂原料重量比组成为:酚醛树脂∶六次甲基四胺∶碱土金属碳酸盐=1-10∶1-5∶1-10。其制备方法是将原料按比例均匀混合,成型;在氮气保护下,升温到200℃,恒温0.5-6小时;取出粉碎至20-100目后,再在氮气保护下,将温度升到800-1300℃,恒温0.5-6小时;降至室温即制得催化剂。本发明具有制备方法简单,易操作,反应条件温和,反应速率快,收率高,成本低等特点。 ...

Подробнее
17-03-2004 дата публикации

高抗激光损伤阈值疏水增透二氧化硅膜的制备方法

Номер: CN0001142450C
Принадлежит:

... 一种高抗激光损伤阈值疏水增透二氧化硅膜的制备方法,是将原料Si(OR)#-[4]、R′xSi(OR)#-[4-x]、无水乙醇、水和催化剂,按摩尔比Si(OR)#-[4]∶R′xSi(OR)#-[4-x]∶无水乙醇∶水∶催化剂=1∶0.1-5∶10-100∶1-10∶0.001-0.2在常温下搅拌均匀制成镀膜液,在温度为0-70℃下老化10-120天,采用常规的旋转镀膜法,提拉法和弯月面法进行单面或双面镀膜。本发明具有设备简单,制备条件温和,易操作,基底上镀本发明的膜层以后,透光率增加,疏水性能好,同时提高膜层的抗激光损伤阈值的优点。 ...

Подробнее
04-02-2004 дата публикации

一种钴锆费托合成催化剂及其制备方法和应用

Номер: CN0001136972C
Принадлежит:

... 一种钴锆费托合成催化剂的重量百分比组成为:钴:10.0~80.0%,氧化锆15.0~85.0%,金属氧化物0-5.0%。采用共沉淀法或浸渍法制备该催化剂。具有优良的稳定性,很高的还原度,高的金属分散度的优点。 ...

Подробнее
28-01-2004 дата публикации

一种用于费托合成重质烃制中间馏分油的催化剂及其制备方法和用途

Номер: CN0001136298C
Принадлежит:

... 一种用于费托合成重质烃制中间馏分油的催化剂其重量百分比组成为Y沸石10~40%,无定形硅铝0~40%,氧化镍3~10%,氧化铝20~70%。催化剂的比表面具有300~600m#+[2]/g,孔容0.30~0.70ml/g,TPD酸度0.75~1.5mmol/g的特征。本发明具有对费托合成产物中重质烃进行选择性断链,具有较好的活性和中油选择性,催化剂的制备过程简单、方便,易于操作,适合于工业生产。 ...

Подробнее
04-02-2004 дата публикации

一种合成碳酸二甲酯的催化剂及其制备方法

Номер: CN0001136966C
Принадлежит:

... 一种合成碳酸二甲酯的催化剂重量比组成为碱土金属的可溶盐∶碱金属化合物∶载体=0.01~0.3∶0.01~0.5∶1。采用将载体培烧1-1后按催化剂组成将载体等体积浸渍到碱土金属的可溶盐水溶液中、干燥、培烧,再将载体等体积浸渍到碱金属化合物中得到催化剂。具有制备方法简单,易操作,化剂与产物易分离,可重复使用,应条件温和,目的产物收率高的优点。 ...

Подробнее
18-08-2004 дата публикации

一种由费托合成产品蜡生产柴油的催化剂及其制备方法和用途

Номер: CN0001162517C
Принадлежит:

... 一种由费托合成产品蜡生产柴油的催化剂的重量百分比组成为Y沸石30-50w%,氧化钨或氧化钼5-20%,氧化物1-10%,氧化铝或硅铝混合物48.5-60%,各组份的重量百分比之和为100%。本发明加氢裂化催化剂比表面250-400m#+[2]/g,孔容0.30-0.70ml/g,TPD酸度0.75-1.5mmol/g。本发明对直链饱和烃进行选择性断链,从而提高了柴油馏分的收率;对产物进行异构化,使产品中的柴油馏分的凝点较低;燃烧性能较好,催化剂活性好、柴油选择性高。 ...

Подробнее
24-11-2004 дата публикации

一种快速合成高结晶度沸石分子筛的方法

Номер: CN0001176849C
Принадлежит:

... 一种快速合成高结晶度沸石分子筛的方法是将水玻璃和去离子水混合成混合液A;Al#-[2](SO#-[4])#-[3]・18H#-[2]O、水和浓硫酸混合成混合液B;在剧烈搅拌下,将B溶液滴加到A溶液中,搅拌均匀;然后加入脂肪胺和无机氨溶液,混合均匀,制成凝胶混合物,密封后老化、晶化、冷却,固液分离,洗涤至滤饼pH=8~9、干燥、焙烧用HCl交换,即等得到H型沸石分子筛。本发明具有合成周期短,结晶度高,结晶沸石中有机模板剂含量低,结晶沸石中钠离子的含量明显降低的优点。 ...

Подробнее
17-11-2004 дата публикации

合成碳酸二甲酯的固体碱催化剂及制法和应用

Номер: CN0001546233A
Принадлежит:

The invention is a kind of solid alkali catalyst for synthesizing dimethyl ester carbonate whose weight percentage components are: calcium fluoride 15%-30%, zirconium oxide 70%-85%. The ZrOCl2 liquid and ammonia are dropped into the reactor to be deposited, after being deposited; they are dried, baked and produced into catalyst. The invention has excellent stability, the speed of activity losing is decreased greatly, avoids the default of normal solid easy to be contaminated by CO2, H2O. The product can be used repeatedly.

Подробнее
22-09-2004 дата публикации

一种由合成气制低碳混合醇的催化剂及其制备方法

Номер: CN0001167502C
Принадлежит:

... 一种由合成气制低碳混合醇的催化剂的组成为:Mo:20-40%,Ni:4-10%,Mn:0.1-5.0%,K:5-15%,S:20-40%,膨润土:20-40%。其制备方法是按比例将硫化铵溶液或硫化氢气体与钼酸铵反应,加入浓醋酸使溶液颜色发生变化,停止加入浓醋酸,加热搅拌,冷却得到含有沉淀物的溶液,最后加入无离子水,直到沉淀物完全溶解,得到硫代钼酸铵溶液;将醋酸镍和醋酸锰混合溶液与硫代钼酸铵溶液并流滴入有醋酸的容器中搅拌,形成黑色沉淀;过滤,对黑色沉淀进行洗涤,烘干;烘干的沉淀与钾盐均匀混合,研磨,通入保护气,焙烧,得到粉末,再加入膨润土均匀混合,然后压片,成型。本发明催化剂可使用较高H#-[2]/CO的原料气。H#-[2]/CO比可以为0.5-3.5,催化剂具有抗硫性、反应条件温和,不结碳等特点。 ...

Подробнее
22-09-2004 дата публикации

一种合成碳酸二甲酯的催化剂及其制备方法和应用

Номер: CN0001167507C
Принадлежит:

... 一种合成碳酸二甲酯的催化剂,原料重量比组成为:酚醛树脂∶六次甲基四胺∶碱金属及碱土金属碳酸盐、硝酸盐、醋酸盐或氢氧化物=1~10∶1~5∶1~10。其制备方法是将原料按比例均匀混合,成型;在氮气保护下,升温到200℃,恒温0.5-6小时;取出粉碎至20-100目后,再在氮气保护下将温度升到600℃-1000℃,恒温0.5-6小时;降至室温即制得催化剂。本发明具有反应条件温和,目的产物收率高,制备方法简单,易操作,成本低,可重复使用等特点。 ...

Подробнее
28-07-2004 дата публикации

重质烷烃生产中间馏分油的低温催化剂及其制备方法

Номер: CN0001159103C
Принадлежит:

... 一种重质烷烃生产中间馏分油的低温催化剂其重量百分比组成为Y沸石20%-40%,磷钨杂多酸或硅钨杂多酸5-20%,氧化镍5-10%,氧化铝40-60%。催化剂的比表面250-450m2/g,孔容0.45-0.70ml/g,TPD酸度0.8-1.9mmol/g。本发明催化剂对重质烷烃有较高的低温反应活性和中油选择性,适合适用于生成中间馏分油的加氢裂化过程。 ...

Подробнее
15-12-2004 дата публикации

一种尿素醇解法合成碳酸二烷基酯的方法

Номер: CN0001554639A
Принадлежит:

The urea alcoholysis process of synthesizing dialkyl carbonate includes dissolving urea in alcohol to form urea solution; and the reaction of urea in solution and alcohol in the urea solution feeding space velocity of 0.01-5/hr, urea solution space velocity of 0.1-10/hr, reaction temperature of 150-300 deg.c, reaction pressure of 0.1-10 MPa, reactor bottom temperature of 70-300 deg.c, stripping section temperature of 70-200 deg.c, rectifying section temperature of 70-200 deg.c, and reflux ratio of 1-20. The present invention has simple process, easy operation, multiple-phase catalysis between the catalyst, reactant and product and no need of separation between the catalyst and the product; and the catalytic distillation reaction technology raises the reaction conversion rate and the yield of dialkyl carbonate.

Подробнее
04-08-2004 дата публикации

一种硅铝双介孔分子筛及其合成方法

Номер: CN0001160250C
Принадлежит:

... 一种硅铝双介孔分子筛的孔道分布为20-35涞目拙25-50%、35-60涞目拙45-70%、其余为20-60湟酝獾目椎澜峁梗具有六方对称的规则介孔结构,在600-800℃,20-50%的水蒸气处理5-10h后,骨架保持完整。采用无机硅源、无机铝源,有机胺、十六烷基三甲基溴化铵通过两步晶化步骤合成。本发明具有合成方法简便、易于操作、成本费用低,适于规模化生产,分子筛具有双重介孔兼有少量微孔结构,稳定性高、酸性易于调变的优点。 ...

Подробнее
02-06-2004 дата публикации

一种制备碳酸丙烯酯或碳酸亚乙酯的方法及反应器

Номер: CN0001152004C
Принадлежит:

... 本发明公开了一种制备碳酸丙(乙)烯酯的方法,该方法将催化剂装入有移热装置,且分为反应区和产物区的反应器中,通入二氢化碳,使反应器的压力为常压~10.0MPa,温度为100~200℃,通入环氧丙烷或环氧乙烷,进料空速为1~100h#+[-1],反应生成碳酸丙烯酯或碳酸亚乙酯、环氧丙烷(环氧乙烷)的单程转化率可达99%,碳酸丙烯酯的选择性在98%以上。在反应的同时移热装置中的移热介质将反应的热量移出,避免了催化剂的高温失活,延长了催化剂的寿命,反应器分为两个区,使产物可连续放出,提高了生产能力,且无需加有机溶机或助剂,降低了成本。 ...

Подробнее
17-11-2004 дата публикации

一种合成碳酸二甲酯的固体碱催化剂及制备和应用方法

Номер: CN0001546234A
Принадлежит:

The invention is a kind of solid alkali catalyst for synthesizing dimethyl ester carbonate whose weight percentage components are: calcium fluoride 15%-30%, zirconium oxide 70%-85%. The ZrOCl2 liquid and ammonia are dropped into the reactor to be deposited, after being deposited; they are dried, baked and produced into catalyst. The invention has excellent stability, the speed of activity losing is decreased greatly, avoids the default of normal solid easy to be contaminated by CO2, H2O. The product can be used repeatedly.

Подробнее
22-09-2004 дата публикации

一种由合成气合成烃的生产方法

Номер: CN0001167650C
Принадлежит:

... 一种由合成气合成烃的生产方法,由含炭质基原料与空气或富氧空气及循环的C#-[1]-C#-[4]烃共同气化生产含氮的稀释合成气,该合成气在钴基催化剂存在下经费―托反应合成烃类,这种催化剂活性高、选择性好,适用于固定床、浆态床、流化床,产品结构合理,操作稳定。本发明采用变换反应与变压吸附分离技术相结合来处理尾气,氢气返回反应器调节合成气氢碳比,C#-[1]~C#-[4]烃返回造气装置,可有效地提高碳利用率。 ...

Подробнее
15-12-2004 дата публикации

对金属负载催化剂进行表面疏水改性的方法

Номер: CN0001554484A
Принадлежит:

The process for surface hydrophobic modification of metal loaded catalyst includes using inorganic oxidant as carrier, conventional catalyst preparing process to obtain un-modified metal loaded catalyst, azeotropic reflux reaction of the un-modified metal loaded catalyst in toluene solvent and trimethylchlorosilane, and stoving. The present invention has the advantages of that the existence of hydrophobic radical makes water produced during reaction hard to form compound with carrier so as to make the catalyst possess excellent stability and very low deactivation rate; and raised selectivity and conversion rate.

Подробнее
15-12-2004 дата публикации

丙烯酸酯类改性剂及制法和在双酚-A聚碳酸酯的应用

Номер: CN0001554681A
Принадлежит:

The acrylic ester modifier is prepared through drying nano silica, nano calcium carbonate, nano zinc oxide, nano zinc sulfide, nano titania or nano cadmium sulfide, adding silane as coupling agent and xylene to react under the xylene refluxing temperature, letting stand to separate lower layer matter, drying the lower layer matter to obtain nano alkylated particle as the acrylic ester modifier. The nano alkylated particle is mixed with emulsifier and deionized water, and through heating under nitrogen protection to 70 deg.c, dropping initiator, acrylic ester monomer to react, cooling, spray drying, modified acrylic ester is obtained. The weight ratio between modifier and the acrylic ester monomer is 2-10 to 90-98. The present invention can raise the performance of polymer.

Подробнее
01-09-2004 дата публикации

一种对费托合成蜡进行加氢的催化剂及其制备方法

Номер: CN0001164360C
Принадлежит:

... 一种对费托合成蜡进行加氢的催化剂各组份重量百分比为氧化镍5.0~20.0,氧化钨0.1~15.0,氧化钛1.0~20.0,氧化铝45.5~93.9。其制备方法包括氧化铝的处理、钛的引入和浸渍钨、镍活性组分三步骤。本发明具有对重质烃加氢饱和活性高的优点,特别适合用于高烯烃含量蜡加氢饱和的优点。 ...

Подробнее