Process for the selective hydroxylation of benzene with molecular oxygen
AssigneeCouncil of Scientific and Industrial Research
InventorsRajaram BAL, Shubhra Acharyya SHANKHA, Shilpi GHOSH, Bipul SARKAR, Karan Singh RAWAT, Chandrashekar PENDEM
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Abstract
The present invention provides an improved process for the selective hydroxylation of benzene. The process provides a direct single step selective vapour 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%.
Claims9
An improved process for the selective hydroxylation of benzene with molecular oxygen (air) over solid catalysts which comprises reacting benzene with air in the pressure range of 1-5 MPa, at a temperature of 150-450° C. with a liquid hourly space velocity (LHSV, benzene feed/g catalyst/hour) in the range of 20 to 400 for a period of 1-30 hrs to obtain phenol.
Dependencies are inferred from the claim text.