摘要:
A crystalline material substantially free of framework phosphorus and comprising a CHA framework type molecular sieve with stacking faults or at least one intergrown phase of a CHA framework type molecular sieve and an AEI framework type molecular sieve, wherein said material, in its calcined, anhydrous form, has a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to about 0.5. The material exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
摘要:
The synthesis of a crystalline material, in particular a high silica zeolite, having a chabazite-type framework is aided by the addition to the synthesis mixture of seeds of an AEI framework-type material. The chabazite-type product has a relatively small crystal size and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
摘要:
A crystalline material has a DDR framework type and, in its calcined, anhydrous form, has a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element, Y is a tetravalent element and n is from 0 to less than 0.01 and wherein the crystals of said material have an average diameter less than or equal to 2 microns. The material is synthesized in the presence of an N-ethyltropanium compound as directing agent.
摘要翻译:结晶材料具有DDR框架型,并且以其煅烧的无水形式具有涉及摩尔关系的组成:<?in-line-formula description =“In-line formula”end =“lead”?>(n) X 2 O 3:YO 2,<β在线式描述=“在线式”末端=“尾”→其中X为三价元素,Y为四价元素,n为0至小于0.01,其中 所述材料的晶体具有小于或等于2微米的平均直径。 该物质在N-乙基anium化合物作为引导剂的存在下合成。
摘要:
A crystalline material is described that has an AEI framework type, wherein the material, in its calcined, anhydrous form, has a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element, Y is a tetravalent element n is from 0 to less than 0.01. The material is normally synthesized in a halide, typically a fluoride, medium and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
摘要翻译:描述了具有AEI骨架类型的结晶材料,其中以煅烧的无水形式的材料具有涉及摩尔关系的组成:<?in-line-formula description =“In-line Formulas”end =“lead “?”(n)X 2 O 3:YO 2,<βin-line-formula description =“In-Line Formulas” end =“tail”?>其中X为三价元素,Y为四价元素,n为0至小于0.01。 该材料通常在卤化物(通常为氟化物)介质中合成,并且在甲醇转化为低级烯烃,特别是乙烯和丙烯中表现出活性和选择性。
摘要:
The synthesis of a crystalline material, in particular, a high silica zeolite, comprising a chabazite-type framework molecular sieve is conducted in the presence of an organic directing agent having the formula: [R1R2R3N—R4]+Q− wherein R1 and R2 are independently selected from hydrocarbyl groups and hydroxy-substituted hydrocarbyl groups having from 1 to 3 carbon atoms, provided that R1 and R2 may be joined to form a nitrogen-containing heterocyclic structure, R3 is an alkyl group having 2 to 4 carbon atoms and R4 is selected from a 4- to 8-membered cycloalkyl group, optionally, substituted by 1 to 3 alkyl groups each having from 1 to 3 carbon atoms; and a 4- to 8-membered heterocyclic group having from 1 to 3 heteroatoms, said heterocyclic group being, optionally, substituted by 1 to 3 alkyl groups each having from 1 to 3 carbon atoms and the or each heteroatom in said heterocyclic group being selected from the group consisting of O, N, and S, or R3 and R4 are hydrocarbyl groups having from 1 to 3 carbon atoms joined to form a nitrogen-containing heterocyclic structure; and Q− is a anion.
摘要:
The present invention provides aqueous catalyst solutions useful for oxidation of olefins to carbonyl products, comprising a palladium catalyst, a polyoxoacid or polyoxoanion oxidant comprising vanadium, and chloride ions. It also provides processes for oxidation of olefins to carbonyl products, comprising contacting olefin with the aqueous catalyst solutions of the present invention. It also provides processes for oxidation of olefins to carbonyl products by dioxygen, comprising contacting olefin with the aqueous catalyst solutions of the present invention, and further comprising contacting dioxygen with the aqueous catalyst solutions. The present invention also provides a process for the oxidation of palladium(0) to palladium(II) comprising contacting the palladium(0) with an aqueous solution comprising chloride ions and a polyoxoacid or polyoxoanion oxidant comprising vanadium.