Chevron U.s.a. Inc.

The Boc Group, Inc.

Other

Chevorn U.s.a. Inc.

Tricat Management Gmbh

Adeola Florence Ojo

Frank R Fitch

Yihua Zhang

Guan-Dao Lei

Martin Bulow

Dan Xie

Martin B&uuml;low

Stacey Ian Zones

Craig S Gittleman

Sudhakar R Jale

Joel E Schmidt

Dongmin Shen

Cong-Yan Chen

Ravi Kumar

Tracy Margaret Davis

James Nathan Ziemer

Shuguang Deng

Philip Connolly

Alfons Brandt

Baldur Unger

Vijay Ramanand Balse

Satish S Tamhankar

Kamala R Krishna

Divyanshu R Acharya

Qing Min Wang

Mark J Andrecovich

Lun-Teh Yuen

Yaping Lu

Kurt Owen Jensen

Shain-Jer Doong

Weibin Jiang

Bao-Lian Su

Hartmut Tschritter

Helge Toufar

Bowman Lee

Jean-Luc Blin

Simone Toufar

Philip Kenerick Maher

Bruce Walter Uhlman

Hyun Sook P Cordes

Karl Seff

Joel Edward Schmidt

An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.

Catalyst and process using SSZ-91 and ZSM-12

A method is disclosed making a molecular of TON framework type having unique properties. The method uses 1,3,4-trimethylimidazolium cations as a structure directing agent and a combined source of silicon and aluminum selected from alumina-coated silica and aluminosilicate zeolites. The obtained molecular sieve can be used in processes for dewaxing paraffinic hydrocarbon feedstocks.

Synthesis of ton framework type molecular sieves

Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.

Processes for producing diesel from unconventional feedstocks

A method is provided for synthesizing *MRE molecular sieves using an organic structure directing agent which comprises a 1-ethylpyridinium cation.

Synthesis of *MRE framework type molecular sieves

A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.

Hydroisomerization catalysts

A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.

SSZ-91 catalyst

An organotemplate-free synthetic process for the production of a zeolite of TON framework type structure is provided. The process includes the steps of: (1) preparing a mixture comprising: (a) an alumina-coated silica; (b) a source of an alkali metal; (c) an alcohol; (d) a source of hydroxide ions; (e) seed crystals comprising a zeolitic material having a TON framework type structure; and (f) water; and (2) crystallizing the mixture obtained in step (1).

Organotemplate-free synthesis of a zeolite of ton framework type

A method for making a hydroisomerization catalyst having improved thermal stability and metal dispersion characteristics, the catalyst prepared therefrom, and a process for making a base oil product using the catalyst are disclosed. The catalyst is prepared from a composition comprising an SSZ-91 molecular sieve and a rare earth modified alumina, with the composition being modified to contain a Group 8-10 metal, typically through impregnation of a Group 8-10 metal composition. The catalyst may be used to produce dewaxed base oil products by contacting the catalyst under hydroisomerization conditions with a hydrocarbon feedstock.

Hydroisomerization catalyst with improved thermal stability

The present application pertains to family of new crystalline molecular sieves designated SSZ-94. Molecular sieve SSZ-94 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-94 is characterized as having magnesium.

Molecular sieve SSZ-94, catalyst, and methods of use thereof

Molecular sieve SSZ-91, methods for preparing SSZ-91, and uses for SSZ-91

A molecular sieve of *MRE framework can be synthesized using one or more of (2-hydroxyethyl)trimethylammonium cations, (2-hydroxpropyl)trimethylammonium cations, propyltrimethylammonium cations, and benzyltrimethylammonium cations as a structure directing agent.

A method is provided for synthesizing a molecular sieve having the framework structure of SSZ-109 using N,N-diisopropyl-N,N,N,N-tetramethylhexane-1,6-diaminium cations as a structure directing agent.

Synthesis of molecular sieve SSZ-109

A new crystalline molecular sieve designated SSZ-95 is disclosed. In general, SSZ-95 is synthesized from a reaction mixture suitable for synthesizing MTT-type molecular sieves and maintaining the mixture under crystallization conditions sufficient to form product. The product molecular sieve is subjected to a pre-calcination step, and ion-exchange to remove extra-framework cations, and a post-calcination step. The molecular sieve has a MTT-type framework and a H-D exchangeable acid site density of 0 to 50% relative to molecular sieve SSZ-32.

Molecular sieve SSZ-95, method of making, and use

Growing community of inventors

Pleasant Hill, CA, United States of America

Adeola Florence Ojo