シアノベンゼン類の接触的合成法に関する研究(第2報) : ベンズアルデヒドとアンモニアの気相接触反応

概要

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Vapor phase catalytic reaction of benzaldehyde and ammonia was investigated . It was found that activated carbon, vanadium oxide and molybdenum oxide, as well as silica gel and activated alumina gel, showed the activity for formation of benzonitrile. From the experimental results of using alkali-treated alumina catalyst, the activity of catalyst for formation of benzonitrile did not depend on the acidic point for alkali poisoning but on another kind of active site . Solid acids or those having the behaviors of the solid acid showed a general tendency of forming toluene and benzene as the by-products . These facts were considered to have relation with the acidic point for alkali poisoning . It was confirmed that the formation of toluene was due to the disproportionation reaction of the benzyl alcohol which was formed by disproportionation reaction of benzaldehyde in the presence of solid acid and water (formed in formation of benzonitrile) . It was considered that benzene was formed from decarbonylation of benzaldehyde .
社団法人有機合成化学協会の論文