Process for the selective hydroxylation of benzene with molecular oxygen

US8772552B2 · kind B2 · utility

Assignee

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH · IN

Inventors

• Rajaram Bal · Dehradun, IN
• Shubhra Acharyya Shankha · Dehradun, IN
• Shilpi Ghosh · Dehradun, IN
• Bipul Sarkar · Bengaluru, IN
• Karan Singh Rawat · Dehradun, IN
• Chandrashekar Pendem · Dehradun, IN

Key dates

• Filing date: Sep 20, 2012
• Grant date: Jul 8, 2014
• Expiry date: Sep 20, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention provides an improved process for the selective hydroxylation of benzene. The process provides a direct single step selective vapor phase hydroxylation of benzene to phenol using molecular oxygen (air) over Cu—Cr oxide catalysts. The process provides benzene conversion of 10 to 45% and selectivity for phenol up to 100%.