Xie Guang
2000
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Journal
Journal of Wuhan University
Abstract
p \|Chlorobenzonitrile is a key intermediate of organic synthesis. Having appraised and screened ammoxidation catalysts of p \|chlorotoluene on an apparatus of “microreactor\|chromatograghy”, the further experiments confirming the catalyst and finding the optimum technological conditions were carried out by using a fixed\|bed reactor made of quartz with a tube 30 mm in inside diameter. The influence of temperature, the ratio of ammonia, the ratio of air and the space velocity of catalyst upon the conversion, molar yield and selectivity of the reaction were observed, respectively. Using catalyst of PC97, on the suitable conditions, the highest conversion is 100%, molar yield is 90.9%. The p \|chlorobenzonitrile obtained is white needle crystal with the purity higher than 99%.