Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Exxon Chemical Patents, Inc.

Exxon Research and Engineering Company

Exxonmobil Technology and Engineering Company

Marc H Anthonis

Machteld Maria Mertens

Antonie Jan Bons

Wilfried Jozef Mortier

Scott Jeffrey Weigel

Johannes Petrus Verduijn

Preeti Kamakoti

Helge Jaensch

Brita Engels

Sina Sartipi

Martine Dictus

Karl Gottlieb Strohmaier

Darryl Donald Lacy

Gary David Mohr

Kenneth Ray Clem

Xiaobing Feng

Lothar Ruediger Czarnetzki

Bart Schoofs

Stephen John McCarthy

Robert James Saxton

Guang Cao

Jane C Cheng

Shifang Luke Luo

Matu J Shah

Anthony F Volpe

Anil S Guram

Brandon J O'Neill

Jeffrey C Yoder

Jane Chi-Ya Cheng

Hailian Li

Mark T Muraoka

Machteld Maria Wilfried Mertens

Cornelius Wilhelmus Van Oorschot

Wim Guy DeGijnst

Antonie J Bons

Methods are provided for using a molecular sieve catalyst for dewaxing formed using a synthesis mixture comprising a morphology modifier. The catalyst may be used, for example, for production of a lubricant base stock. For example, ZSM-48 crystals formed using the morphology modifier (and/or formulated catalysts made using such crystals) can have an increased activity and/or can provide an improved yield during catalytic dewaxing of lubricant base stocks.

Dewaxing using a molecular sieve catalyst

Processes are provided for preparing molecular sieves. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier L selected from the group consisting of nonionic surfactants, anionic surfactants, sugars and combinations thereof.

Molecular sieves and a process for making molecular sieves

Processes are provided for preparing molecular sieves of framework structure MEI, TON, MRE, MWW, MFS, MOR, FAU, EMT, or MSE. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier L selected from the group consisting of cationic surfactants having a quaternary ammonium group comprising at least one hydrocarbyl group having at least 12 carbon atoms, nonionic surfactants, anionic surfactants, sugars and combinations thereof.

Processes are provided for preparing molecular sieves for use as catalysts. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier which may be selected from cationic surfactants having a single quaternary ammonium group comprising at least one hydrocarbyl group having at least 12 carbon atoms, nonionic surfactants, anionic surfactants, sugars, and combinations thereof.

Process for making molecular sieves

A method of synthesising a molecular sieve of DDR framework type. The method comprises: preparing a synthesis mixture capable of forming a molecular sieve of DDR framework type, said synthesis mixture comprising water, a silicon source, optionally a source of a trivalent element X, optionally a source of a pentavalent element Z, optionally a source of hydroxide ions, optionally a source of a metal cation M, a structure directing agent, and seed crystals having a framework type selected from CHA and LEV; said synthesis mixture being substantially free from fluoride ions; heating said synthesis mixture under static crystallization conditions for a time sufficient to form crystals of said molecular sieve of DDR framework type, said crystallization conditions including a temperature of from 100&#xb0; C. to 220&#xb0; C.; and, recovering said crystals of the molecular sieve of DDR framework type from the synthesis mixture.

A method of making a crystalline molecular sieve of MFI framework type, preferably ZSM-5, from a synthesis mixture comprising at least one source of tetravalent element (Y), at least one source of trivalent element (X), at least one source of alkali metal hydroxide (MOH), at least one structure directing; (R) and water, said synthesis mixture having the following molar composition: YO, (p)XO: (q) MOH: (r) R: (s) HO, wherein (p) is from 0.005 to 0.025, (q) is from 0.05 to 0.5, (r) is from 0.05 to 0.15 and (s) is from 35 to 45, wherein the ratio of the largest dimension (L) to the smallest dimension (S) of each crystal of the molecular sieve product is at least 5, and the smallest dimension (S) is from 20 nm to 200 nm.

MFI with unusual morphology

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.

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

A process is described for the manufacture of a crystalline molecular sieve layer on a support, which process comprises impregnation of the support with an impregnating material prior to deposition of a crystalline molecular sieve layer and subsequent removal of substantially all the impregnating material.

Processes for the manufacture of supported materials

There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises core crystals containing first crystals of a first zeolite and optionally second crystals of a second zeolite having a composition, structure type, or both that is different from said first zeolite and binder crystals containing third crystals of a third zeolite and optionally fourth crystals of a fourth zeolite having a composition, structure type, or both that is different from said third zeolite. If the core crystals do not contain the second crystals of the second zeolite, then the binder crystals must contain the fourth crystals of the fourth zeolite. The zeolite bound zeolite finds application in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.

Tailored zeolite bound zeolite catalysts and its use for hydrocarbon conversion

Tailored zeolite bound zeolite catalyst and its use for hydrocarbon conversion

Low temperature hydrothermal treatment of an LTL zeolite-producing mixture produces a colloidal suspension of the zeolite; the suspension may be used as seeds in Al- and Ga-LTL zeolite manufacture.

Zeolites and processes for their manufacture

Mixtures of synthesis mixtures of different alkalinity's produce small MFI crystals that are not spherical.

Molecular sieves and process for their manufacture

Molecular sieves and processes for their manufacture

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Hofstade, Belgium

Marc H Anthonis