Process for the preparation of phosphorous containing mesoporous alumina catalyst for selective dehydration of methanol to dimethyl ether

US9468914B2 · kind B2 · utility

Assignee

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH · IN

Inventors

• Ankur Bordoloi · Dehradun, IN
• Reena Goyal · Gairsain, IN
• Subhasis Das · Jamkhed, IN
• Rajib Kumar Singha · Dehradun, IN
• Chandrashekar Pendem · Dehradun, IN
• Laxmi Narayan Sivakumar Konathala · Dehradun, IN
• Rajaram Bal · Dehradun, IN
• Sandeep Saran · Dehradun, IN
• Madhukar Onkarnath Garg · Dehradun, IN

Key dates

• Filing date: Feb 27, 2015
• Grant date: Oct 18, 2016
• Expiry date: Feb 27, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2235/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides an improved process for the preparation of phosphorous containing mesoporous alumina catalyst for selective dehydration of methanol to dimethyl ether. The process provides a single step selective vapor phase dehydration of methanol to produce dimethyl ether over phosphorous containing mesoporous alumina (P/Al2O3) catalyst at a temperature in the range of 150-350° C. The process provides methanol conversion of 45-100% with a selectivity of the DME up to 100%.