Exxonmobil Chemical Patents Inc.

Clariant Corporation

Hailian Li

Machteld Maria Mertens

Robert James Saxton

Guang Cao

Anil S Guram

Jeffrey C Yoder

Mark T Muraoka

Claus G Lugmair

Karl Gottlieb Strohmaier

Mobae Afeworki

Wilfried Jozef Mortier

Richard B Hall

Matu J Shah

Anthony F Volpe

Georges M K Mathys

Helge Jaensch

An Verberckmoes

Thomas Herman Colle

Marc H Anthonis

Karin Yaccato

Antonie Jan Bons

Geraldine Tosin

Chris Esther Kliewer

Sourav Saha

Thomas H Colle

Karin Yaccatu

The present disclosure relates generally to catalyst materials and processes for making and using them. More particularly, the present disclosure relates to molybdenum, bismuth and iron-containing metal oxide catalyst materials useful, for example, in the partial oxidation or ammoxidation of propylene or isobutylene, processes for making them, and processes for making acrolein, methacrolein, acrylonitrile, and methacrylonitrile using such catalysts.

Synthetic methods for the preparation of propylene ammoxidation catalysts

The present disclosure relates to metal oxide catalyst materials useful, for example, in the ammoxidation of propylene or isobutylene, processes for making them, and processes for making acrylonitrile and methacrylonitrile using such catalyst materials. In certain aspects, a catalyst material is a fused composite of a metal oxide catalyst and nanoparticulate silica, the nanoparticulate silica comprising in the range of about 40 wt % to about 80 wt % of silica having a particle size in the range of 10 nm to 35 nm, and in the range of about 20 wt % to about 60 wt % of silica having a particle size in the range of 36 nm to 80 nm. The metal oxide catalyst can be, for example, a molybdenum-containing mixed metal oxide catalyst.

Metal oxide catalyst material and processes for making and using same

The present invention provides an olefin oligomerization process comprising the steps of: i) reducing the level of acetonitrile in an olefin feed by contacting the feed with a non-zeolitic metal oxide; and ii) contacting the olefin feed with reduced level of acetonitrile with an olefin oligomerization catalyst under conditions suitable to oligomerize the olefin.

Olefin oligomerization process

A method is disclosed of synthesizing a crystalline material comprising a CHA framework type molecular sieve and having a composition involving the molar relationship:()XO:YO,wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to less than 0.01. The method comprises preparing a reaction mixture capable of forming said material, said mixture comprising a source of water, a source of an oxide of a tetravalent element Y and optionally a source of an oxide of a trivalent element X, wherein the reaction mixture is substantially free of fluoride ions added as HF; maintaining the reaction mixture under conditions sufficient to form crystals of the crystalline material; and than recovering the crystalline material. The reaction mixture comprises either a specific directing agent for directing the formation of a CHA framework type molecular sieve and/or a HO:YOmolar ratio of greater than 20. In one embodiment, the resultant crystalline material is free of stacking faults and/or any intergrown phase with an AEI framework type molecular sieve.

Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins

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:[RRRN&#x2014;R]Qwherein Rand Rare independently selected from hydrocarbyl groups and hydroxy-substituted hydrocarbyl groups having from 1 to 3 carbon atoms, provided that Rand Rmay be joined to form a nitrogen-containing heterocyclic structure, Ris an alkyl group having 2 to 4 carbon atoms and Ris 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 Rand Rare hydrocarbyl groups having from 1 to 3 carbon atoms joined to form a nitrogen-containing heterocyclic structure; and Qis a anion.

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)XO:YO,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.

Chabazite-containing molecular sieve, its synthesis and its use in the conversion of oxygenates to olefins

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.

Chabazite-type molecular sieve, its synthesis and its use in the conversion of oxygenates to olefins

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:()XO:YO,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.

AEI-Type zeolite, its synthesis and its use in the conversion of oxygenates to olefins

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Sunnyvale, CA, United States of America

Hailian Li