Allied Corporation

Allied Chemical Corporation

Leonard Evans James

William B Fisher

Lamberto Crescentini

Stanley D Lazarus

Laszlo J Balint

Joseph M Browning

This invention is a catalyst and method of oxidizing ammonia by contacting the ammonia and air with catalyst of cobalt oxide, wherein the improvement comprises using activated alumina in conjunction with the cobalt oxide catalyst.

Oxidation of ammonia over a mixed catalyst bed of cobalt and aluminum

A process for preparing an improved cobalt oxide catalyst for ammonia oxidation comprising decomposing a cobalt compound such as basic cobalt carbonate by heating to form cobalt oxide, then saturating the cobalt oxide with cobalt nitrate solution and reheating to give an active, durable cobalt oxide catalyst. In ammonia oxidation processes, the durable catalyst of this invention has a long catalyst life and gives improved conversion of ammonia to nitric oxide. Additionally, the catalyst of this invention is capable of performing at higher operating rates than known catalysts. Optimum yields are obtained when the catalyst is prepared from compounds derived from electrolytic grade cobalt.

Process for making a cobalt oxide catalyst

In a process for the preparation of high molecular weight linear polyesters of terephthalic acid which comprises partially esterifying terephthalic acid with an alkylene glycol under direct esterification conditions and then further esterifying and polycondensing the partially esterified product, the molecular weight distribution of the polyester is narrowed by correlating the carboxyl conversion with the reacted glycol to terephthalic acid mol ratio in various steps of a multistep process.

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Richmond, VA, United States of America

Leonard Evans James