Mobil Oil Corporation

Iraj I Rahmim

Albin Huss, Jr

Daria N Lissy

Donald J Klocke

Ivy Dawn Johnson

Werner O Haag

Minas R Apelian

Anthony S Fung

Altaf Husain

Claus-Peter Haelsig

Peter Wood

A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins at high levels of feed conversion wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-35 under skeletal isomerization conditions which can include temperatures of 100.degree. to 750.degree. C. and linear olefin space velocities of less than 30 WHSV. The process uses a catalyst composition comprising 5 to 40 wt % ZSM-35, and 60 to 95 wt % inorganic oxide matrix, e.g., silica.

Highly selective n-olefin isomerization process using low zeolite

A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins at high levels of feed conversion wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-35 under skeletal isomerization conditions which can include temperatures of 100 to 750.degree. C. The process uses a catalyst composition comprising ZSM-35, e.g., microcrystalline ZSM-35 having a crystal size whose largest dimension is no greater than 0.5 micron and whose ratio of its second largest dimension to said largest dimension ranges from 0.5 to 1. The process exhibits enhanced catalyst cycle life where the ZSM-35 is composited with a silica-containing matrix to provide a catalyst composite having a total pore volume greater than 0.6 cc/g or 300.sup.+ angstroms pore volume of greater than 0.1 cc/g.

Highly selective n-olefin isomerization process using ZSM-35

A process is disclosed for the continuous highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins over constrained intermediate pore zeolites, e.g., ZSM-35, using multiple parallel reactors.

Highly selective N-olefin isomerization process using multiple parallel

This invention provides a process for upgrading hydrocarbon feedstock comprising the steps of:

Process for the production of alkylate gasoline from FCC light aliphatics

A method for skeletal isomerization of linear olefins to iso-olefins, e.g., n-butenes to isobutylene, over a catalyst comprising medium pore zeolite, e.g., a zeolite selected from ZSM-22, ZSM-23, and ZSM-35. Treatment of the zeolite with dicarboxylic acid, e.g., oxalic acid, significantly reduces aging rate and increases cycle length of the catalyst.

N-olefin skeletal isomerization process using dicarboxylic acid treated

A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins at high levels of feed conversion wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-22 having a crystal size whose largest dimension is no greater than 0.5 micron. The process is carried out under isomerization conditions to produce iso-olefins of corresponding carbon number, e.g., isobutene. High overall iso-olefin yields thus can be obtained, even at relatively low temperatures.

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Voorhees, NJ, United States of America

Iraj I Rahmim