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Title: Isomerization of C.sub.4 alkenes

Abstract

A method for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene codimer, which comprieses feeding at least 80 weight % of either the isobutene or n-butene to a catalytic distillation reactor containing a fixed bed acidic cation exchange resin catalyst packing which provides both the catalyst sites and distillation sites for the reaction products, isomerizing a portion of the isobutene or n-butene to produce a mixture of isobutene and n-butene and reacting at least a portion of the isobutene and n-butene to form codimer of isobutene and n-butene, whereby an overhead fraction containing any unreacted isobutene and n-butene and a bottoms fraction containing codimer is produced. The result of the reaction is substantially the same regardless whether the feed is isobutene or n-butene. Other aspects of the invention, include combinations of procedures to produce high purity isobutene and n-butene. Either isobutene or n-butene product (depending on the desired product) can be recycled as feed, thus substantially carrying out the isomerization to extinction and total conversion to the desired product.

Inventors:
 [1]
  1. (Houston, TX)
Issue Date:
Research Org.:
CR & L/NEOCHEM JOINT VENTURE
OSTI Identifier:
865253
Patent Number(s):
4482775
Assignee:
Chemical Research & Licensing Company (Houston, TX) IDO
DOE Contract Number:  
FC07-80CS40454
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
isomerization; alkenes; method; isomerizing; isobutene; n-butene; produce; mixture; normal; butene; polymerizing; portion; codimer; comprieses; feeding; 80; weight; catalytic; distillation; reactor; containing; fixed; bed; acidic; cation; exchange; resin; catalyst; packing; provides; sites; reaction; products; reacting; form; whereby; overhead; fraction; unreacted; bottoms; produced; result; substantially; regardless; feed; aspects; combinations; procedures; purity; product; depending; desired; recycled; carrying; extinction; total; conversion; acidic cation; resin catalyst; bottoms fraction; fraction containing; catalytic distillation; reactor containing; cation exchange; exchange resin; reaction product; reaction products; fixed bed; desired product; normal butene; bed acid; distillation reactor; /585/203/

Citation Formats

Smith, Jr., Lawrence A. Isomerization of C.sub.4 alkenes. United States: N. p., 1984. Web.
Smith, Jr., Lawrence A. Isomerization of C.sub.4 alkenes. United States.
Smith, Jr., Lawrence A. Sun . "Isomerization of C.sub.4 alkenes". United States. https://www.osti.gov/servlets/purl/865253.
@article{osti_865253,
title = {Isomerization of C.sub.4 alkenes},
author = {Smith, Jr., Lawrence A.},
abstractNote = {A method for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene codimer, which comprieses feeding at least 80 weight % of either the isobutene or n-butene to a catalytic distillation reactor containing a fixed bed acidic cation exchange resin catalyst packing which provides both the catalyst sites and distillation sites for the reaction products, isomerizing a portion of the isobutene or n-butene to produce a mixture of isobutene and n-butene and reacting at least a portion of the isobutene and n-butene to form codimer of isobutene and n-butene, whereby an overhead fraction containing any unreacted isobutene and n-butene and a bottoms fraction containing codimer is produced. The result of the reaction is substantially the same regardless whether the feed is isobutene or n-butene. Other aspects of the invention, include combinations of procedures to produce high purity isobutene and n-butene. Either isobutene or n-butene product (depending on the desired product) can be recycled as feed, thus substantially carrying out the isomerization to extinction and total conversion to the desired product.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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