摘要:
This invention relates to a new form of crystalline material identified as ZSM-12 type, to a new and useful improvement in sunthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound e.g. hydrocarbon compound, conversion.
摘要:
A crystalline zeolite SSZ-23 is prepared using an adamantane quaternary ammonium ion as a template. The zeolite is useful in converting lower alkanols to gasoline range hydrocarbons.
摘要:
Zeolite EU-2 having a molar composition expressed by the formula: 0.5 to 1.5 R.sub.2 O:Y.sub.2 O.sub.3 : at least 70 XO.sub.2 :0 to 100 H.sub.2 O wherein R is a monovalent cation or .sup.1 /n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, gallium or boron, and H.sub.2 O is water of hydration additional to water notionally present when R is H, and having an X-ray pattern substantially as set out in Table 1 is prepared from a reaction mixture containing XO.sub.2 (preferably silica), Y.sub.2 O.sub.3 (preferably alumina) and a dicationic alkylated polymethylene diamine. The zeolite is useful in catalytic processes, especially for the conversion of methanol to hydrocarbons.
摘要翻译:具有由下式表示的摩尔组成的沸石EU-2:R 2 O:Y 2 O 3:至少70XO 2:0至100H 2 O其中R是一价阳离子或1价n价阳离子,X是硅和 /或锗,Y是铝,铁,镓或硼中的一种或多种,并且当R是H时,H 2 O是额外的水的水合水,并且具有基本上如表1所示的X射线图案 来自含有XO 2(优选二氧化硅),Y 2 O 3(优选氧化铝)和阳离子烷基化聚亚甲基二胺的反应混合物。 沸石可用于催化过程,特别是用于将甲醇转化为烃。
摘要:
A silica catalyst that retains its high initial activity for a longer time is obtained by forming the catalyst from an aquasol that was obtained by mixing an alkali metal aluminate with an aqueous solution of alkali metal silicate.
摘要:
Zeolite EU-2 having a molar composition expressed by the formula:0.5 to 1.5 R.sub.2 O: Y.sub.2 O.sub.3 : at least 70 XO.sub.2 : 0 to 100 H.sub.2 Owherein R is a monovalent cation or 1/n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, gallium or boron, and H.sub.2 O is water of hydration additional to water notionally present when R is H, and having an X-ray pattern substantially as set out in Table 1 is prepared from a reaction mixture containing XO.sub.2 (preferably silica), Y.sub.2 O.sub.3 (preferably alumina) and a dicationic alkylated polymethylene diamine. The zeolite is useful in catalytic processes, especially for the conversion of methanol to hydrocarbons.
摘要翻译:具有由下式表示的摩尔组成的沸石EU-2:R 2 O:Y 2 O 3:至少70XO 2:0至100H 2 O其中R是一价阳离子或1价n价阳离子,X是硅和 /或锗,Y是铝,铁,镓或硼中的一种或多种,并且当R是H时,H 2 O是额外的水的水合水,并且具有基本上如表1所示的X射线图案 来自含有XO 2(优选二氧化硅),Y 2 O 3(优选氧化铝)和阳离子烷基化聚亚甲基二胺的反应混合物。 沸石可用于催化过程,特别是用于将甲醇转化为烃。
摘要:
A method for increasing ion exchange capacity of a titanosilicate comprises contacting the titanosilicate with aqueous alkaline solution having a pH ranging from 7 to 10. The resulting material is especially useful as a support for highly dispersed noble metal.
摘要:
This disclosure is concerned with the crystallization of ZSM-5 zeolites and, more particularly, is concerned with the preparation of high silica ZSM-5 zeolites having a silica-to-alumina ratio of greater than 70, up to and approaching infinity, by control of the pH so as to obtain rod-shaped crystals.
摘要:
A novel crystalline silica composition having a silica to alumina atomic ratio not lower than 80 and having a certain specific X-ray diffraction pattern after calcination in air for at least 3 hours at a temperature of at least 500.degree. C.
摘要:
Xylene isomerization is carried out using specific non-zeolitic molecular sieve catalyst, e.g., the silicoaluminophosphate molecular sieves of U.S. Pat. No. 4,440,871, to provide improved production of p-xylene from C.sub.8 aromatic compounds and the conversion of ethylbenzene to a xylene.