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發展了自对硝基乙苯經自动氧化以制取对硝基苯乙酮方法。产品可用冷冻法析出。最好的接触剂为附着于碳酸鈣上的醋酸錳(10:1).在攪拌下向对硝基乙苯中通氧,速度为每克每分鐘0.55ml.,温度140～145°C,接触剂用量相当于0.005～0.01％Mn~(++),在18至30小时內对硝基苯乙酮含量可达62％。接触剂中的碳酸鈣的作用,並非一單純的不活潑性載体。我們証明了:它具有延緩过氧化物分解的重要作用,而过氧化物的存在,对于自动氧化反应链锁的得以持续是必要的。它也能抵消可能存在于原料中的微量銅鹽和铁鹽对过氧化物的强力破坏作用,以得到酮含量高、色澤淺的产物。此外尚發現在反应过程中有一种未經証实的抑制物生成並积累。
The development of self-p-nitro-ethylbenzene by automatic oxidation to prepare p-nitro-acetophenone method. Products can be frozen out. The best contact agent is attached to the calcium carbonate on the manganese acetate (10: 1) to the nitro-ethylbenzene under stirring oxygen at a rate of 0.55ml per gram per minute, the temperature of 140 ~ 145 ° C, The amount of contact agent is equivalent to 0.005 ~ 0.01% Mn ~ (++), and the content of p-nitroacetophenone can reach 62% in 18 to 30 hours. The role of calcium carbonate in contactors is not a purely inert carrier. We have demonstrated that it has an important role in delaying peroxide decomposition, and that the presence of peroxides is necessary for the continuation of the autoxidation chain. It also counteracts the strong destructive effect of peroxide on copper and iron salts, which may be present in raw materials, in order to obtain products with a high ketone content and light color. In addition, it was found that there was an unconfirmed inhibitor production and accumulation during the reaction.