PROCESS FOR PREPARING ZMS-5 ZEOLITES

VERFAHREN ZUR HERSTELLUNG EINES FORMKOERPERS AUS SYNTHETISCHEM MORDENIT.

Verfahren zur Herstellung von synthetischem Mordenit

Verfahren zur Herstellung von Mordenit

Improvements in or relating to synthetic crystalline mordenite

Crystalline mordenite is prepared by dispersing an amorphous alkali-metal aluminosilicate in water, adjusting the pH of the dispersion to 11.0-13.3, heating the dispersion under autogenous pressure at 200-375 DEG C., the aluminosilicate having molar ratios of SiO2/Al2O3 of 9.0-13.5 and of alkali metal oxide to alumina of 0.4-1.6. The alkali metal aluminosilicate may be obtained by reaction between an alkali metal silicate solution (e.g sodium silicate) and an inorganic aluminium salt solution (e.g. aluminium sulphate, chloride or nitrate, or an alum) at room temperature with stirring, the reaction mixture preferably having molar ratios of SiO2/Al2O3 of at least 10 and of SiO2/Na2O of 2-3.5. Alternatively, the aluminosilicate may be prepared by the method claimed in Specification 753,052. At least some of the sodium ions in a crystalline sodium mordenite prepared by the method of the invention may be replaced by other alkali metal ions, alkaline earth metal ions, zinc or hydrogen ions, using ...

ZEOLITE CATALYST COMPOSITION AND USE THERE OF IN TRANSALKYLATION OF ALKYLAROMATIC HYDROCARBONS

... 1337843 Zeolite composition UNIVERSAL OIL PRODUCTS CO 19 April 1971 [16 March 1970] 24161/71 Heading C1A [Also in Divisions B1 and C5] A catalyst composition comprises alumina and from 50-90 wt. per cent (w.r.t. the composition) of a zeolite of mordenite crystal structure, said composition being characterized by its preparation which comprises (a) heating an amorphous SiO 2 /Al 2 O 3 composite (SiO 2 : Al 2 O 3 in a ratio 12 : 1-30 : 1) at 140-250‹ C. with sufficient of an aqueous solution containing alkali metal ions to provide an alkali metal : Al atomic ratio of 1À5 : 1-3À5 : 1 yielding a mordenite zeolite having substantially the same SiO 2 /Al 2 O 3 ratio ast he initial composition and (b) heating said zeolite in an alumina sol, separating off excess sol, gelling the sol and ageing the resulting composition in an alkaline medium for at least 5 hours before washing, drying and calcining. The solution containing alkali metal ions may be aqueous NaOH, the alumina sol may be an AlCl 3 ...

Process of conservation of food products.

VERFAHREN ZUR DIREKTEN SYNTHESE VON MORDENITEN

In a process for direct synthesis of mordenites with a molar SiO2/Al2O3 ratio greater than 12, an aqueous synthesis mixture containing an a Na2O . b Al2O3 . c SiO2 system, the SiO2 : Al2O3 ratio in the synthesis mixture being greater than 10, the Na2O : SiO2 ratio being less than 0.2 and the H2O : SiO2 ratio being less than 25, is treated hydrothermally at temperatures greater than 150 DEG C, and the mordenite formed is then separated from the mother liquor. The silicic acid constituent of the synthesis mixture is the portion of the residue which remains after hydrochloric acid digestion of magnesium silicate, in particular serpentine, and which is soluble in this caustic solution. Preferably, the constituents of the synthesis mixture are provided in the following ratios: SiO2 : Al2O3 = 10 - 30; Na2O : SiO2 = 0.1 - 0.2; H2O : SiO2 = 5 - 20. The duration of the hydrothermal treatment is 6 to 12 hours, in particular 8 to 10 hours, and preferably temperatures of 180 to 200 DEG C are applied ...

VERFAHREN ZUR DIREKTEN SYNTHESE VON MORDENITEN

PROCESS FOR THE PREPARATION OF MORDENITE

Verfahren zur Herstellung von Mordenit

Procedimento di conservazione di sostanze alimentari

Zéolithe de type mordenite et son procédé de préparation.

L'invention a pour objet une zéolithe cristalline synthétique de type mordénite caractérisée en ce qu'elle possède: a) la formule générale approchée suivante (CF DESSIN DANS BOPI) où x est un nombre compris entre 9 et 30, et b) un diagramme de diffraction des rayons X représenté dans le tableau I de la description, et en ce qu'elle a été synthétisée en milieu fluorure. L'invention concerne également un procédé de préparation de ladite zéolithe. Cette zéolithe peut être utilisée notamment en adsorption et en catalyse.

MORDENITE SYTHESIS

Procedure for the durable making of food

PROCEDURE FOR THE DIRECT SYNTHESIS OF MORDENITES

SYNTHETIC MORDENITE PREPARATION AND USE AS ZEOLITE CATALYST

PROCESS FOR PREPARING CRYSTALLINE ALUMINOSILICATE ZEOLITE

SUMMARY A crystalline aluminosilicate zeolite is obtained by stirring under heating an aqueous reaction mixture containing a silica source, an alumina source, an alkali source and an organic carboxylic acid.

PROCESS FOR THE PREPARATION OF MORDENITE

MORDENITE SYNTHESIS

Kaolin which has been converted to meta-kaolin is employed as the alumina source in the hydrothermal synthesis of mordenite; aging of the reactants prior to autoclaving improves the particle size and filtration characteristics of the product.

PROCESS FOR PREPARATION OF MORDENITE TYPE ZEOLITE

PROCESS FOR THE PREPARATION OF MORDENITE

PROCESS FOR PREPARATION OF SYNTHETIC MORDENITE MOLDED BODY

Method for manufacturing crystalline mordenite

Manufactoring process of crystalline mordenite

Crystalline mordenite manu

A crystalline zeolite which has the crystalline structure of mordenite contains less than 3 wt.% of alumina, excluding water conent, and has a silica: alumina molar ratio in the zeolite of at least 55:1, pref. 100:1. In the mfe, mordenite is calcined in the "exchanged hydrogen form", or a precursor of this form and the calcined mordenite is leached with an acid so as to reduce the aluina content to a predetermined value.

PROCESS FOR PRODUCING SHAPED MORDENITE BODIES

VERFAHREN ZUR HERSTELLUNG VON MORDENIT.

A process for preparing mordenite having in its anhydrous condition the formula: Me2O.Al2O3.xSiO2 wherein Me is an alkali metal and x is between 10 and 20 is performed by contacting in an aqueous medium sodium silicate with an aluminium compound, the molar ratio of SiO2 to Al2O3 being from 10 to 200, in the presence of at least one alkali metal hydroxide, the molar ratio of Me<+> to SiO2 being higher than 0,6, in the presence of a mineralizing agent, at a temperature between 20 DEG C and 100 DEG C, checking that the molar ratio OH<-> to SiO2 of the resultant mixture is comprised between 0,2 and 0,8, and crystallizing the mixture for a time from a few hours to 40 days at a temperature between 100 DEG C and 200 DEG C.

PROCEDURE FOR THE PRODUCTION OF ZMS-5 ZEOLITES.

PROCESS FOR PREPARATION OF SYNTHETIC MORDENITE MOLDED BODY

MORDENITE SYNTHESIS

HIGH-SILICA MORDENITE AND PROCESS FOR PREPARATION THEREOF

TYPE ZEOLITE MORDENITE AND PROCESS FOR ITS PREPARATION.

L'invention a pour objet une zéolithe cristalline synthétique de type mordénite caractérisée en ce qu'elle possède: a) la formule générale approchée suivante (CF DESSIN DANS BOPI) où x est un nombre compris entre 9 et 30, et b) un diagramme de diffraction des rayons X représenté dans le tableau I de la description, et en ce qu'elle a été synthétisée en milieu fluorure. L'invention concerne également un procédé de préparation de ladite zéolithe. Cette zéolithe peut être utilisée notamment en adsorption et en catalyse. The subject of the invention is a synthetic crystalline zeolite of the mordenite type, characterized in that it has: a) the following approximate general formula (CF DRAWING IN BOPI) where x is a number between 9 and 30, and b) a diagram of X-ray diffraction shown in Table I of the description, and in that it was synthesized in a fluoride medium. The invention also relates to a process for preparing said zeolite. This zeolite can be used in particular in adsorption and in catalysis.

PROCESS FOR THE PREPARATION OF MORDENITE

СЕЛЕКТИВНЫЙ КАТАЛИЗАТОР ДЛЯ КОНВЕРСИИ АРОМАТИЧЕСКИХ УГЛЕВОДОРОДОВ

FIELD: chemistry. SUBSTANCE: invention relates to catalytic materials. Described is aggregated material UZM-14, which contains globular aggregates of crystallites, having a mordenite-type skeleton with channels of 12-member rings, mesopore volume of at least 0.10 cm 3 /g and average length of crystallites parallel to the direction of channels of 12-member rings equal to or less than 60 nm. Described is a catalyst which is suitable for converting aromatic hydrocarbons which contains said aggregated UZM-14 material. EFFECT: high activity. 10 cl, 1 dwg, 3 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 491 121 (13) C2 (51) МПК B01J B01J B01J B01J B01J B01J ФЕДЕРАЛЬНАЯ СЛУЖБА B01J ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ C01B B01J (12) ОПИСАНИЕ 29/70 29/72 29/78 23/16 23/38 23/74 21/00 39/02 29/18 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010153237/04, 16.06.2009 (24) Дата начала отсчета срока действия патента: 16.06.2009 (73) Патентообладатель(и): ЮОП ЛЛК (US) (43) Дата публикации заявки: 27.06.2012 Бюл. № 18 2 4 9 1 1 2 1 (45) Опубликовано: 27.08.2013 Бюл. № 24 2 4 9 1 1 2 1 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 24.12.2010 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: RU 2284294 C2, 27.09.2006. RU 2075467 C1, 20.03.1997. US 20060252632 A1, 09.11.2006. US 6376730 B1, 23.04.2002. WO 2007048616 A2, 03.05.2007. US 3912659 A, 14.10.1975. WO 2005110582 A1, 17.05.2005. (86) Заявка PCT: US 2009/047440 (16.06.2009) (87) Публикация заявки РСТ: WO 2009/158233 (30.12.2009) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент", О.И.Воль (54) СЕЛЕКТИВНЫЙ КАТАЛИЗАТОР ДЛЯ КОНВЕРСИИ АРОМАТИЧЕСКИХ УГЛЕВОДОРОДОВ параллельно направлению каналов из 12членных колец, равную 60 нм или меньше. Описан катализатор, пригодный для конверсии ароматических углеводородов, включающий указанный выше агрегированный материал UZM-14. Технический результат ...

Zeolith vom Mordenit-Typ und Verfahren zu seiner Herstellung.

Verfahren zur Herstellung von kristallinem Mordenit

Verfahren zur Herstellung von kristallinem Mordenit

VERFAHREN ZUR HERSTELLUNG VON KRISTALLINEM MORDENIT

Mordenite synthesis

A method of making mordenite comprises: (a) heating a reaction mixture at any first temperature in the range 25 to 100 DEG C for a time at least substantially 2 hours, said reaction mixture comprising water, free silica, sodium silicate, and meta kaolin; and (b) after (a), heating said reaction mixture for sufficient temperature and time to enable that mixture to give mordenite having a weight median particle size of at least substantially 6 microns. o ...

A process for the preparation of Mordenite, Catalysts prepared therefrom, and their use

... 1,181,188. Isomerization. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 Sept., 1968 [29 Sept., 1967], No. 46039/68. Heading C5E. [Also in Division C1] Hydrocarbons may be isomerized in the presence of a catalyst comprising at least one metal or compound of Groups VIA, VII A or VIII of the Mendeleef Periodic Table deposited on a synthetic mordenite carrier prepared by heating a co-gel of aluminium hydroxide on silica hydrogel in an aqueous alkaline solution under its autogenous pressure, the co-gel having a silica/alumina molar ratio in the range 9À5:1 to 12À5:1 and sodium hydroxide being present in an amount in excess of that calculated from the formula of mordenite by an amount of 7-30 mg Na 2 O per gram of water, the total quantity of water present being at least 50 moles/mole Al 2 O 3 . In Example VI, n-pentane is isomerized in the presence of hydrogen and a Pt/mordenite catalyst.

PROCEDURE FOR THE PRODUCTION OF MORDENITE.

Procedure for the production of mordenite

SYNTHETIC MORDENITE PREPARATION AND USE AS ZEOLITE CATALYST

MORDENITE TYPE ZEOLITE AND PROCESS FOR ITS PREPARATION

L'invention a pour objet une zéolithe cristalline synthétique de type mordénite caractérisée en ce qu'elle possède : a) la formule générale approchée suivante : ha2O, Al2O3, xSiO2 où x est un nombre compris entre 9 et 30, b) un diagramme de diffraction des rayons X représenté dans le tableau I de la description, et c) une teneur en fluor comprise entre environ 0,005 et 2,0 % en poids, et en ce qu'elle a été synthétisée en milieu fluorure. L'invention concerne également un procédé de préparation de ladite zéolithe. Cette zéolithe peut être utilisée notamment en adsorption et en catalyse.

ZEOLITE CATALYST COMPOSITION AND USE THERE OF IN TRANSALKYLATION OF ALKYLAROMATIC HYDROCARBONS

СЕЛЕКТИВНЫЙ КАТАЛИЗАТОР ДЛЯ КОНВЕРСИИ АРОМАТИЧЕСКИХ УГЛЕВОДОРОДОВ

... 1. Агрегированный материал UZM-14, содержащий глобулярные агрегаты кристаллитов, имеющие каркас морденитного типа с каналами из 12-членных колец, объем мезопор по меньшей мере 0,10 см3/г и среднюю длину кристаллитов параллельно направлению каналов из 12-членных колец, равную 60 нм или меньше. ! 2. Агрегированный материал UZM-14 по п.1, в котором средняя длина кристаллитов параллельно направлению каналов из 12-членных колец равна 50 нм или меньше. !3. Агрегированный материал UZM-14 по п.1 или 2, в котором объем мезопор составляет по меньшей мере 0,13 см3/г. ! 4. Агрегированный материал UZM по п.1 или 2, в котором UZM-14-кристаллиты имеют 1×1019 отверстий каналов из 12-членных колец на 1 г агрегированного материала. ! 5. Агрегированный материал UZM-14 по п.1 или 2, дополнительно характеризующийся мольным отношением SiO2/Al2O3 от 8 до 50. ! 6. Агрегированный материал UZM-14 по п.1 или 2, дополнительно содержащий связующее, выбранное из одного или более: оксида алюминия, оксида кремния и алюмосиликата ...

Verfahren zum Schuetzen von Lebensmitteln gegen Verderben bzw. Verschlechtern chemischer Art

Improvements in or relating to the Manufacture of Synthetic Crystalline Mordenite

... 1,152,028. Crystalline mordenite. L'AIR LIQUIDE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE S.A. 12 July, 1966 [12 July, 1965], No. 31346/66. Addition to 1,119,962. Heading C1A. Granular crystalline mordenite is obtained by agglomerating and heating an amorphous alkali metal aluminosilicate of formula 0À4- 1À6 M 2 O: Al 2 O 3 : 8-16 SiO 2 , mixing the agglomerates with water and sufficient alkali to give a pH of 11-13À3, and heating at a temperature of at least 100‹ C. under autogenous pressure which is at least atmospheric. The amorphous aluminosilicate may be obtained by precipitation from an alkali metal silicate, e.g. with SiO 2 /M 2 O of 2-3À8, and an Al salt, e.g. sulphate, chloride, nitrate, or an alum; or by the method of Specification 753,052. It may be compressed as a powder, moistened and formed into balls, or extruded as an aqueous paste optionally with 1-10% of a plasticizer (e.g. alkyl, carboxyalkyl or hydroxyalkyl cellulose, polyvinyl alcohol, bentonite, kaolin ...

NEW SYNTHETIC MORDENITES AND PROCESS FOR THE PRODUCTION THEREOF

... 1,205,449. Synthetic mordenite. FARBENFABRIK WOLFEN VEB. 11 Oct., 1967, No. 46409/67. Heading C1A. Synthetic mordenites are prepared by mixing an aqueous sodium aluminate solution with a solid silicic acid, the particles of which have a size of less than 50 Ám, to give a mixture with the constitution, expressed as mole ratios of the oxides: Na 2 O: Al 2 O 3 .. .. .. > 1 Na 2 O: SiO 2 .. .. .. 0À08-0À35 SiO 2 : Al 2 O 3 .. .. .. 10-100 H 2 O: Na 2 O .. .. .. 10-250 and this mixture is heated in a closed vessel for 4-96 hours at a temperature of 110-250‹ C. The solid silicic acid may be obtained by precipitation from aqueous solution by the reaction of waterglass with acids or by the pyrolysis of vapour phase hydrolysis of a volatile silicon compound.

Improvements in or relating to the manufacture of synthetic crystalline mordenite

Crystalline mordenite is synthesized by deionizing at least to about 80% an alkali metal silicate solution using a cation exchange material in hydrogen form to form a deionized silica sol, mixing the sol directly or after concentration up to 30% silica with aqueous sodium aluminate and excess alkali to give pH 7.5 to 11 of the mother liquor after crystallization and thus forming a gel with ratio SiO2/Al2O3 of 8 : 1 to 14 : 1 and heating the gel at 250 DEG to 350 DEG C. under superatmospheric pressure for, e.g. 1 to 24 hours. The initial mixture of silica sol and sodium aluminate may contain a quantity of Na2O in the initial mixture such that the mol ratio Na2O/Al2O3 is greater than 1 but not greater than 2. The mordenite may be dehydrated at 300 DEG to 400 DEG C.

Improvements relating to the preparation of Mordenite

Synthetic zeolite

ELECTROPHOTOGRAPHIC TYPE ZEOLITE AND PROCESS FOR ITS PREPARATION.

Synthetic zeolite

MORDENITE CATALYST AND USE THEREOF

Synthetic mordenites and process for preparing the same

A process for preparing an acid-stable crystalline synthetic mordenite capable of adsorbing molecules larger than 5 <\>rA, comprises reacting in a closed container a batch composition having the oxide ratios (molar):- .Na2O/SiO2.......0.07-0.30 .SiO2/Al2O3.......6-180 .H2O/Na2O.......6-300 .Na2O/Al2O3.......at least 1 at a temperature of from 75 DEG to 260 DEG C. The source of silica is preferably a volcanic glass such as pumice or a diatomaceous earth. Other conventional ingredients may be used. The mordenite may be treated with acid to give the hydrogen-exchange mordenite.

HIGH-SILICA MORDENITE AND PROCESS FOR PREPARATION THEREOF

HIGH-SILICA MORDENITE AND PROCESS FOR PREPARATION TEHEREOF ABSTRACT OF THE DISCLOSURE A high-silica mordenite is provided, which is a synthetic mordenite prepared without performing the dealuminization treatment, and is characterized in that the silica/alumina molar ratio is in the range of from 12 to 30 and the amount of benzene adsorption is 7 to 10% by weight as determined at a temperature of 25°C under a vapor pressure of 35 mmHg. The high-silica mordenite is prepared by a process wherein a reaction mixture having à composition represented by the following oxide molar ratios: Na2/SiO2 = 0.08 - 0.2 SiO2/Al2O = 14 - 55 H2O/Na2O = 100 - 300 and H2O/SiO2 = 10 - 40 is formed using synthetic amorphous silicic acid having an apparent specific gravity of from 0.05 to 0.45 g/ml as a silica source, and the reaction mixture is heated at a temperature of 140 to 180°C with stirring to effect crystallization.

PROCESS FOR THE PREPARATION OF MORDENITE

MORDENITE TYPE ZEOLITE AND PROCESS FOR ITS PREPARATION

L'invention a pour objet une zéolithe cristalline synthétique de type mordénite caractérisée en ce qu'elle possède : a) la formule générale approchée suivante : ha2O, Al2O3, xSiO2 où x est un nombre compris entre 9 et 30, b) un diagramme de diffraction des rayons X représenté dans le tableau I de la description, et c) une teneur en fluor comprise entre environ 0,005 et 2,0 % en poids, et en ce qu'elle a été synthétisée en milieu fluorure. L'invention concerne également un procédé de préparation de ladite zéolithe. Cette zéolithe peut être utilisée notamment en adsorption et en catalyse.

Manufactoring process of crystalline mordenite

Manufactoring process of crystalline mordenite

PROCESS FOR THE PRODUCTION OF MORDENITE

Verfahren zur Herstellung von kristallinem Mordenit

PROCESS FOR PREPARATION OF ZEOLITES

Matter with the state of particles in the shape of pellets usable in particular like catalytic agent

Verfahren zur Herstellung von Formkoerpern aus synthetischem Mordenit

PROCESS FOR PREPARATION OF MORDENITE TYPE ZEOLITE

PROCESS FOR PREPARATION OF MORDENITE TYPE ZEOLlTE A mordenite type zeolite having a high purity and a high SiO2/Al2O3 molar ratio is prepared without using an organic or inorganic mineralizer, by a process wherein a homogeneous aluminosilicate containing 3 to 14% by weight, expressed in terms of Al2O3 (calculated as the anhydride), of aluminum is crystallized in an aqueous solution of an alkali metal hydroxide.

PROCESS FOR THE PRODUCTION OF MORDENITE

Cette invention concerne la production de mordénite à gros pores. Du kaolin qui a été converti en méta-kaolin est utilisé comme source d'alumine pour la synthèse hydrothermique de mordénite; le vieillissement des réactifs avant le passage à l'autoclave améliore la grosseur de particules et les caractéristiques de filtration du produit Ce procédé résout ainsi le problème de la production de mordénite synthétique présentant des pores d'une grosseur suffisante.

Process for producing coarse-grained mordenite

There is produced coarse particle mordenite by treating a reaction mixture consisting essentially of on a molar basis 2.5-10 Na2O, Al2O3, 15-30 SiO2, 400-4000 H2O, 5-30 NaCl in an autoclave at a temperature of 140 DEG to 180 DEG C. until formation of crystals separating the crystalline product, washing with water and drying.

IMPROVEMENTS IN OR RELATING TO THE MANUFACTURE OF SYNTHETIC CRYSTALLINE MORDENITE

... 1,202,545. Synthetic crystalline mordenite. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 5 Oct., 1967 [7 Oct., 1966], No. 45585/67. Addition to 1,067,461. Heading CIA. Synthetic crystalline mordenite is prepared by heating the gel obtained in the manner described in the parent Specification at 100‹ to 250‹ C. and at or above 1 at. The pH of the mother liquors after crystallization is at least 7.5 and preferably 11-13. The crystallization period is more prolonged in this method compared to that of the parent Specification. In the region of 100‹ C. the use of equipment under pressure is avoided. Other alkali and alkaline earth metal mordenites can be prepared from the synthetic sodium mordenite by partial or complete exchange of the sodium ions. The sodium ions may also be exchanged for hydrogen ions or the ions of the metals nickel and cobalt. A dehydrated synthetic mordenite obtained by dehydration of one of the above mordenites can be used for drying ...

MORDENITE CATALYST AND USE THEREOF

... 1334928 Mordenite UNIVERSAL OIL PRODUCTS CO 19 April 1971 [16 March 1970] 24160/71 Heading C1A [Also in Division C5] The invention comprises a crystalline alumino-silicate of the mordenite type having a silica to alumina mole ratio of at least 40 : 1 prepared by acid extraction of alumina from an initial mordenite having a silica to alumina mole ratio of 12 : 1 to 30 : 1 using an aqueous solution of HCl, H 2 SO 4 or HNO 2 of at least1N concentration, the initial mordenite having been prepared from a mixture of composition: SiO 2 : Al 2 O 3 :: 12 : 1 to 30 : 1, Na 2 O : Al 2 O 3 :: 1À5 : 1 to 2À5 : 1 and H 2 O : Na 2 O :: 60 : 1 to 200 : 1 wherein the silica component is employed as a cogel with the Al 2 O 3 and said reaction mixture is maintained at 25-300‹ C. for a time sufficient to form said initial mordenite. The preferred SiO 2 /Al 2 O 3 cogel is derived from an acidic silica sol and the acid extraction may be carried out at 0-200‹ C. At least some of the hydrogen ions in the product ...

A process for accelerating the crystallization of mordenite

A process for accelerating the crystallization of mordenite comprises forming an aqueous alkaline mixture comprising a source of silica, a source of alumina and/or a source of silica/alumina, heating the obtained mixture to at least 140 DEG C, adding as seeds mordenite crystals to the mixture and crystallizing the mordenite from the mother liquor.

Improvements in or relating to pelletized synthetic zeolite

The invention comprises pelletized particulate material which is self-bonded and has a principal phase consisting of synthetic mordenite. The pellets may be formed from a powdered aqueous mixture having a molar composition of Na2O. 1 to 1.33 Al2O3. 8.5 to 11 SiO2 excluding water fired at a temperature high enough to produce self-bonding but not complete vitrification, e.g. 600 DEG C. for 1 hour, and heated at a reduced temperature with an aqueous solution of sodium silicate or caustic soda or a mixture thereof. The initial mixture may be prepared from kaolin, diatomaceous earth, sodium silicate, and water. A typical composition comprises 19.15% kaolin, 26.57% diatomaceous earth, 54.28% aqueous sodium silicate, and 7.7% water. The final heating of the pellets may be effected at a temperature below 290 DEG C. When this temperature is 200 DEG C. or less, the pellets, on being refluxed with strong acid, undergo ion exchange, sodium ions being replaced by hydrogen ions.

SYNTHETIC MORDENITE MOLDED BODY

SYNTHETIC CRYSTALLINE ALUMINOSILICATE COMPOSITION AND METHOD FOR THE PRODUCTION THEREOF

PROCESS FOR PREPARATION OF ZEOLITES

PROCESS FOR PREPARATION OF ZEOLITES A zeolite similar to ZSM-5, having lattice spacings (d-values), shown in Table 1, of the X-ray powder diffraction pattern, and a ferrierite zeolite are prepared by crystallizing a homogeneous phase compound of a granular amorphous aluminosilicate in water or in an aqueous solution of an alkali metal hydroxide and/or an alkali metal silicate.

PROCESS FOR PREPARATION OF SYNTHETIC MORDENITE MOLDED BODY

PROCESS FOR PREPARATION OF SYNTHETIC MORDENITE MOLDED BODY ABSTRACT OF THE DISCLOSURE A synthetic mordenite molded body is prepared by a process wherein a starting mixture comprising as the main components a silica source, an alumina source, an alkali source and water is molded into a starting molded body, the molded body is calcined and the calcined molded body is heated in an aqueous solution of sodium silicate. The starting mixture has incorporated therein a mordenite seed crystal powder. When the molded body is calcined, the temperature is elevated by heating to a calcination temperature not lower than 400°C at an average rate of at least 10°C/min and calcination is conducted at the calcination temperature within 2 hours. When the calcined molded body is crystallized, an aqueous solution of sodium silicate having an SiO2 concentration of 7 to 25% by weight, an Na2O concentration of 2 to 8% by weight and an SiO2/Na2O molar ratio of from 0.9 to 4.0 is used as the aqueous solution of sodium silicate.

Process of production of mordenite

Manufactoring process of crystalline mordenite

Procédé pour la production de mordénite.

Cette invention concerne la production de mordénite à gros pores. Du kaolin qui a été converti en méta-kaolin est utilisé comme source d'alumine pour la synthèse hydrothermique de mordénite; le vieillissement des réactifs avant le passage à l'autoclave améliore la grosseur de particules et les caractéristiques de filtration du produit Ce procédé résout ainsi le problème de la production de mordénite synthétique présentant des pores d'une grosseur suffisante.

Improvements relating to the preparation of Mordenite

PROCESS FOR PREPARING CRYSTALLINE ALUMINOSILICATE ZEOLITE

SYNTHETIC CRYSTALLINE ALUMINOSILICATE COMPOSITION AND METHOD FOR THE PRODUCTION THEREOF

The present invention relates to a synthetic crystalline aluminosilicate composition having the following chemical composition (in terms of molar ratios of oxides): 0.5-3M2/nO?Al2O3?15-30SiO2?0-5OH2O wherein M represents a metallic cation and n is the valence of the metallic cation and also having an X ray powder diffraction pattern having d-spacing as shown in Table l, and a process for the production of said composition. By the practice of this invention crystalline aluminosilicate of the mordenite type possessing a high silica content is produced which is of high commercial value, For example, as catalysts or molecular sieves.

METHOD FOR THE PRODUCTION OF MORDENITE

A process for the preparation of Mordenite, Catalysts prepared therefrom, and their use

PROCESS FOR THE PREPARATION OF MORDENITE

... 1340498 Synthetic mordenite SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 19 April 1971 [3 April 1970] 15942/70 Heading C1A Mordenite is prepared by heating an aqueous mixture comprising amorphous silica-alumina and one or more sodium compounds, in which process at least 70 mol. per cent of the sodium present in the starting mixture expressed as Na 2 O originates from sodium salts of polybasic acids having a pK value for the highest dissociation step measured at 18‹ C., which is larger than 10 and in which process the following relation exists between the Na 2 O/Al 2 O 3 molar ratio (m) in the starting mixture and the applied reaction temperature (t) which amounts at most to 160‹ C.: m=8À3-0À06(t-100)Œ2À3. Examples of suitable inorganic acids are arsenic acid, orthoboric acid, carbonic acid and phosphoric acid. The amorphous silica-alumina preferably has a silica/alumina molar ratio between 9À5 and 12À5 and is preferably either a cogel of aluminium hydroxide on silica hydrogel or a cogel ...

Synthetic zeolites and process of preparing the same

An acid stable synthetic zeolite having the mordenite crystal structure and the formula (Na1K1Ca/2)2Al2Si9-10O22-24 (A2O)0-6.7 and being capable of absorbing molecules having a size larger than 5<\>rA, which is claimed per se, is produced by heating a mixture containing a water-insoluble source of silica and aqueous alkali metal silicate at a temperature less than 190 DEG C. for a time sufficient to prepare the zeolite. The mixture is preferably heated under autogeneous pressure and saturated vapour pressure. The source of silica is preferably a volcanic glass such as pumice. If the source of silica is amorphous silica a water-soluble aluminate is also present during heating. The zeolite may be subsequently hydrolysed to yield an acid stable synthetic mordenite having the formula H2Al2Si9-10O22-24(H2O)0-6.7, capable of absorbing molecules having a size larger than 5A DEG , which is also claimed per se. The hydrolysis is suitably carried out using IN. HCl. The mordenites of this will absorb ...

[UNK]

A PROCESS FOR ACCELERATING THE CRYSTALLIZATION OF MORDENITE

Verfahren zum Isolieren der Stirn- und Schaltverbindungen von Wicklungsstaeben elektrischer Maschinen

Selective catalyst for aromatics conversion

The subject invention comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of 12-ring channels of 60 nm or less and a mesopore volume of at least 0.10 cc/gram. Catalysts formed from the novel material are particularly effective for the transalkylation of aromatics.

Verfahren zur Herstellung eines Zeolith-Katalysators und dessen Verwendung

Werkwijze voor het bereiden van mordeniet.

Selective catalyst for aromatics conversion

The subject invention comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of 12-ring channels of about 60 nm or less and a mesopore volume of at least about 0.10 cc/gram. Catalysts formed from the novel material are particularly effective for the transalkylation of aromatics.

Treatment of colloidal zeolites

THIS INVENTION RELATES TO TREATMENT OF FORMED COLLOIDAL SIZE ZEOLITE TO FACILITATE SUBSEQUENT PROCESSING BY REMOVING SOLUBLE SALTS FROM AN AQUEOUS SUSPENSION OF SAID COLLOIDAL ZEOLITE IN THE MOTHER LIQUOR REMAINING AFTER CRYSTALLIZATION, WITHOUT APPRECIABLY CHANGING THE ZEOLITE CONCENTRATION IN THE SUSPENSION. SUCH TREATMENT INVOLVES CONTACTING THE AQUEOUS SUSPENSION OF THE ZEOLITE WITH A SEMIPERMEABLE MEMBRANE WHICH IS IN CONTACT, AT THE SIDE OPPOSITE THE ZEOLITE SUSPENSION, WITH AN AQUEOUS TREATING SOLUTION.

Treatment of colloidal zeolites

THIS INVENTION RELATES TO TREATMENT OF FORMED COLLOIDAL SIZE ZEOLITES TO FACILITATE SUBSEQUENT PROCESSING BY REMOVING SOLUBLE SALTS FROM AQUEOUS SUSPENSION OF SAID COLLOIDAL ZEOLITE IN THE MOTHER LIQUOR REMAINING AFTER CRYSTALLIZATION, WITHOUT APPRECIABLY CHANGING THE ZEOLITE CONCENTRATION IN THE SUSPENSION. SUCH TREATMENT INVOLVES CONTACTING SAID ZEOLITE SUSPENSION WITH CATION AND ANION EXCHANGE RESIN PARTICLES LARGER THAN ABOUT 10 MICRONS IN DIAMETER.

Process for the preparation of mordenite

A method of preparing mordenite by hydrothermal treatment of a silica-alumina cogel prepared by precipitation of alumina on a silica gel (as opposed to a coprecipitate) in which the cogel is heated in an alkali solution having excess alkali (calculated basis the alkali-metal oxide), the total amount of alkali being equal to AX/102+BY/1000, where A is the molecular weight of the alkali oxide, x is the weight of alumina in the cogel, in grams; y is the weight of water in the total solution, in grams; and b is the weight, in milligrams, of excess alkali (basis a molar alkali-alumina ratio of 1 per gram of water and is in a range between 7-30 milligrams per gram of water.

Selective catalyst for aromatics conversion

本发明包括一种包含微晶的球状聚集体的新型UZM-14催化材料，其具有MOR骨架型、60纳米或更小的平行于12环通道方向的平均微晶长度、以及至少0.10立方厘米/克的中孔体积。由该新型材料形成的催化剂对芳族化合物的烷基转移特别有效。

Mordenite-type zeolite having a unique crystal morphology and method for producing the same

Patent JPS6035284B2

Transalkylation of alklaromatic hydrocarbons in contact with a zeolite catalyst composition

A CATALYST COMPOSITION WHICH IS PARTICULARLY EFFECTIVE AS A CATALYST WITH RESPECT TO THE TRANSALKYLATION OR DISPROPORTIONATION OF TOLUENE TO FORM BENZENE AND POLYMETHYLBENZENE PRODUCTS. THE CATALYST COMPRISES A ZEOLITE WITH A MORDENITE CRYSTAL STRUCTURE CONTAINING A ALUMINA FIXED IN COMBINATION THEREWITH. THE CATALYST IS CHARACTERIZED BY A METHOD OF PREPARATION.

Synthetic crystalline aluminosilicate composition and method for the production thereof

A synthetic crystalline aluminositicate composition has the following chemical composition (in terms of molar ratios of oxides); 0.5-3M 2 /nO:Al 2 O 3 :15-30SiO 2 :0-50H 2 O wherein M represents a metallic cation and n is the valence of the metallic cation and also having an X-ray powder diffraction pateern having d-spacing as shown in the followinq Table. The novel composition is made by maintaining an aqueous solution containing dissolved Si0 2 ; Al 2 O 3 ; Na 2 0 and the metal M in specified ranges of molar ratios at 150 to 200°C under autogeneous pressure for 10 to 40 hours. By the practice of this invention, crystalline aluminosilicate of the modernite type possessing a high silica content is produced which is of high commercial value, for example, as a catalyst or molecular sieve.

High-silica mordenite and process for preparation thereof

Mordenite type zeolithe and process for producing the same

Process for preparation of synthetic mordenite molded body

Mordenite type zeolite and process for its manufacture.

Selective catalyst for aromatics conversion

The subject invention comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of 12-ring channels of 60 nm or less and a mesopore volume of at least 0.10 cc/gram. Catalysts formed from the novel material are particularly effective for the transalkylation of aromatics.

MORDENITE AND PROCEDURE FOR PREPARING THEREOF

Method for producing synthetic mordenite compact

MORDENITE AND PROCEDURE FOR PREPARING THEREOF

METHOD FOR THE PREPARATION OF MORDENITE

Process for direct synthesis of mordenites

In a process for direct synthesis of mordenites with a molar SiO2/Al2O3 ratio greater than 12, an aqueous synthesis mixture containing an a Na2O . b Al2O3 . c SiO2 system, the SiO2 : Al2O3 ratio in the synthesis mixture being greater than 10, the Na2O : SiO2 ratio being less than 0.2 and the H2O : SiO2 ratio being less than 25, is treated hydrothermally at temperatures greater than 150 DEG C, and the mordenite formed is then separated from the mother liquor. The silicic acid constituent of the synthesis mixture is the portion of the residue which remains after hydrochloric acid digestion of magnesium silicate, in particular serpentine, and which is soluble in this caustic solution. Preferably, the constituents of the synthesis mixture are provided in the following ratios: SiO2 : Al2O3 = 10 - 30; Na2O : SiO2 = 0.1 - 0.2; H2O : SiO2 = 5 - 20. The duration of the hydrothermal treatment is 6 to 12 hours, in particular 8 to 10 hours, and preferably temperatures of 180 to 200 DEG C are applied.

Process for preparing porous crystalline alumino-silicates

A process for preparing mordenite having in its anhydrous condition the formula: Me2O.Al2O3.xSiO2 wherein Me is an alkali metal and x is between 10 and 20 is performed by contacting in an aqueous medium sodium silicate with an aluminium compound, the molar ratio of SiO2 to Al2O3 being from 10 to 200, in the presence of at least one alkali metal hydroxide, the molar ratio of Me<+> to SiO2 being higher than 0,6, in the presence of a mineralizing agent, at a temperature between 20 DEG C and 100 DEG C, checking that the molar ratio OH<-> to SiO2 of the resultant mixture is comprised between 0,2 and 0,8, and crystallizing the mixture for a time from a few hours to 40 days at a temperature between 100 DEG C and 200 DEG C.

Process for preparing porous crystalline alumino-silicates

Process for the production of mordenite and its use as a support for catalysts for hydrocarbon conversion processes

Synthetic crystalline aluminosilicate composition and method for the production thereof

Monophasic Mordenite Zeolite, Monophasic Mordenite Zeolite Coated Absorbent and Manufacturing Method Thereof

본 발명의 단일상 모데나이트-제올라이트 제조방법은 환경오염을 우려가 있는 유기 물질이 아닌 무기물질을 템플레이트(또는 시드, seed)로 사용하므로 친환경적이며 폐수 처리비용이 저렴하여 제조비용을 절감 할 수 있는 있는 장점이 있다. 본 발명의 단일상 모데나이트-제올라이트는 기공의 크기가 크고 3차원 미세구조를 가지는 베타-제올라이트를 시드로서 활용하므로 높은 기공율을 가진 단일상 모데나이트-제올라이트를 제조 할 수 있는 장점이 있으며 상기 단일상 모데나이트-제올라이트를 담체에 코팅하면 VOCs를 흡착하여 제거 할 수 있는 흡착제를 제조할 수 있는 장점이 있다.

Selective catalyst for aromatics conversion

The subject invention comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of 12-ring channels of about 60 nm or less and a mesopore volume of at least about 0.10 cc/gram. Catalysts formed from the novel material are particularly effective for the transalkylation of aromatics.

Procedimento per la produzione di mordenite a grandi aperture

Allumino-silicati cristallini procedimento per la preparazione di porosi.

一种活性硅铝酸盐及其制备方法与应用

本发明公开一种活性硅铝酸盐及其制备方法与应用，所述活性硅铝酸盐的制备方法包括步骤：提供硅铝矿物和碱金属氢氧化物；将所述硅铝矿物与所述碱金属氢氧化物进行混合，得到固体混合物；将所述固体混合物置于预设湿度的环境中进行搅拌，发生固相反应，达到预设搅拌时间后，在预设温度下加热预设时间，得到所述活性硅铝酸盐。本发明先通过能耗较低的固相反应过程对硅铝矿物中的硅铝成分进行初步有效活化，破坏硅铝矿物原有晶体结构，然后再对产物进行低温加热活化，强化对硅铝成分的固相碱侵蚀效果，促进硅铝矿物原有晶体结构进一步的坍塌，促进形成更多的活性硅铝酸盐成分。本发明中不必进行高温条件下的煅烧，减少了活化硅铝矿物的能耗和成本。

[UNK]

Verfahren zur herstellung von mordenit

[UNK]

[UNK]

[UNK]

[UNK]

Fremgangsmade til fremstilling af zeolit

[UNK]

Method to tailor zeolite silica-to-alumina ratio

The present disclosure is directed to a method of manufacture of zeolite. A sol-gel formulation includes a water-soluble fraction of ODSO as an additional component. The resulting products include zeolite with increased SAR relative to comparable sol-gel formulations without ODSO as a precursor. In addition, the SAR is increased by increasing the ODSO content during synthesis. In additional embodiments, zeolite yield is also increased.

단일상 모데나이트-제올라이트, 단일상 모데나이트-제올라이트가 코팅된 담체를 포함하는 흡착제 및 이의 제조방법

본 발명의 단일상 모데나이트-제올라이트 제조방법은 환경오염을 우려가 있는 유기 물질이 아닌 무기물질을 템플레이트(또는 시드, seed)로 사용하므로 친환경적이며 폐수 처리비용이 저렴하여 제조비용을 절감 할 수 있는 있는 장점이 있다. 본 발명의 단일상 모데나이트-제올라이트는 기공의 크기가 크고 3차원 미세구조를 가지는 베타-제올라이트를 시드로서 활용하므로 높은 기공율을 가진 단일상 모데나이트-제올라이트를 제조 할 수 있는 장점이 있으며 상기 단일상 모데나이트-제올라이트를 담체에 코팅하면 VOCs를 흡착하여 제거 할 수 있는 흡착제를 제조할 수 있는 장점이 있다.

Werkwijze voor de bereiding van mordeniet met grote porieen.

Verfahren zur herstellung von mordenit grosser porenweite

Preparing mordenite

Procedimento per la produzione di mordenite a grandi aperture

[UNK]

一种活性硅铝酸盐及其制备方法与应用

本发明公开一种活性硅铝酸盐及其制备方法与应用，所述活性硅铝酸盐的制备方法包括步骤：提供硅铝矿物和碱金属氢氧化物；将所述硅铝矿物与所述碱金属氢氧化物进行混合，得到固体混合物；将所述固体混合物置于预设湿度的环境中进行搅拌，发生固相反应，达到预设搅拌时间后，在预设温度下加热预设时间，得到所述活性硅铝酸盐。本发明先通过能耗较低的固相反应过程对硅铝矿物中的硅铝成分进行初步有效活化，破坏硅铝矿物原有晶体结构，然后再对产物进行低温加热活化，强化对硅铝成分的固相碱侵蚀效果，促进硅铝矿物原有晶体结构进一步的坍塌，促进形成更多的活性硅铝酸盐成分。本发明中不必进行高温条件下的煅烧，减少了活化硅铝矿物的能耗和成本。

一种基于硅铝酸盐矿物调质的固废阴燃介质床料及其应用

本发明属于固废处置相关技术领域，其公开了一种基于硅铝酸盐矿物调质的固废阴燃介质床料及其应用，所述介质床料由硅铝酸盐矿物与固体蓄热介质混合获得，其中，所述硅铝酸盐矿物的孔隙率不小于，所述硅铝酸盐矿物与固体蓄热介质的质量比为()：()。本申请可以有效协同实现降碳、控氮以及重金属的固化。

[UNK]

一种基于硅铝酸盐矿物调质的固废阴燃介质床料及其应用

本发明属于固废处置相关技术领域，其公开了一种基于硅铝酸盐矿物调质的固废阴燃介质床料及其应用，所述介质床料由硅铝酸盐矿物与固体蓄热介质混合获得，其中，所述硅铝酸盐矿物的孔隙率不小于，所述硅铝酸盐矿物与固体蓄热介质的质量比为()：()。本申请可以有效协同实现降碳、控氮以及重金属的固化。