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Tyrer Process

Published Online: 15 SEP 2010

DOI: 10.1002/9780470638859.conrr632

Comprehensive Organic Name Reactions and Reagents

Comprehensive Organic Name Reactions and Reagents

How to Cite

2010. Tyrer Process. Comprehensive Organic Name Reactions and Reagents. 632:2822–2825.

Publication History

  1. Published Online: 15 SEP 2010

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Abstract

This reaction is an industrial process to produce benzenesulfonic acid, involving an azeotropic removal of water at specified temperatures by passing vaporized benzene into 66° Bé. acid. The produced benzenesulfonic acid is then fused with caustic soda and water to produce phenol. Therefore, the industrial production of benzenesulfonic acid is known as the Tyrer process, and the reactor is referred to as the Tyrer sulfonator. The study explores methods to improve the efficiency of the sulfonation. Benzene vapor is used in this reaction, so the safety to both employees and the environment is always of concern. It has been found that iodine can accelerate the sulfonation of benzene. This process has industrial value in the production of benzenesulfonic acid.

Keywords:

  • benzenesulfonic acid;
  • iodine;
  • phenol;
  • sulfuric acid