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Title: Process for the preparation of ethyl benzene

Abstract

Ethyl benzene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50.degree. C. to 300.degree. C., using as the catalyst a mole sieve characterized as acidic by feeding ethylene to the catalyst bed while benzene is conveniently added through the reflux to result in a molar excess present in the reactor to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene and diethyl benzene in the bottoms. The bottoms are fractionated, the ethyl benzene recovered and the bottoms are contacted with benzene in the liquid phase in a fixed bed straight pass reactor under conditions to transalkylate the benzene thereby converting most of the diethyl benzene to ethyl benzene which is again separated and recovered.

Inventors:
 [1];  [1];  [1]
  1. (Houston, TX)
Issue Date:
Research Org.:
CR & L/NEOCHEM JOINT VENTURE
OSTI Identifier:
870213
Patent Number(s):
5476978
Assignee:
Chemical Research & Licensing Company (Pasadena, TX) IDO
DOE Contract Number:  
FC07-80CS40454
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; preparation; ethyl; benzene; produced; catalyst; bed; 25; 50; atmospheres; pressure; temperatures; range; degree; 300; mole; sieve; characterized; acidic; feeding; ethylene; conveniently; added; reflux; result; molar; excess; reactor; required; react; reacting; substantially; recovering; principal; overhead; diethyl; bottoms; fractionated; recovered; contacted; liquid; phase; fixed; straight; pass; conditions; transalkylate; converting; separated; sieve characterized; molar excess; mole sieve; principal overhead; recovering benzene; reacting substantially; liquid phase; fixed bed; catalyst bed; ethyl benzene; conveniently added; feeding ethylene; /585/

Citation Formats

Smith, Jr., Lawrence A., Arganbright, Robert P., and Hearn, Dennis. Process for the preparation of ethyl benzene. United States: N. p., 1995. Web.
Smith, Jr., Lawrence A., Arganbright, Robert P., & Hearn, Dennis. Process for the preparation of ethyl benzene. United States.
Smith, Jr., Lawrence A., Arganbright, Robert P., and Hearn, Dennis. Sun . "Process for the preparation of ethyl benzene". United States. https://www.osti.gov/servlets/purl/870213.
@article{osti_870213,
title = {Process for the preparation of ethyl benzene},
author = {Smith, Jr., Lawrence A. and Arganbright, Robert P. and Hearn, Dennis},
abstractNote = {Ethyl benzene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50.degree. C. to 300.degree. C., using as the catalyst a mole sieve characterized as acidic by feeding ethylene to the catalyst bed while benzene is conveniently added through the reflux to result in a molar excess present in the reactor to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene and diethyl benzene in the bottoms. The bottoms are fractionated, the ethyl benzene recovered and the bottoms are contacted with benzene in the liquid phase in a fixed bed straight pass reactor under conditions to transalkylate the benzene thereby converting most of the diethyl benzene to ethyl benzene which is again separated and recovered.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Patent:

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