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1.苯乙酸 苯乙酸的生产方法有苯乙腈水解法、氯苄羰基合成法、苯乙酰胺水解法、苯甲醇法等。其中氯苄羰基合成法近年来在国内进行了许多科研工作,取得了较好的效果。该法是在羰基金属盐存在下,用一氧化碳与烷基卤化物反应制取,反应条件温和,步骤少,毒性低,可利用中小化肥厂合成氨生产的精炼再生气为原料,以节省装置投资费用和降低生产成本。
1. Phenylacetic acid Phenylacetic acid is produced by the hydrolysis of phenylacetonitrile, benzyl chloride synthesis, phenylacetamide hydrolysis, and benzyl alcohol. Among them, the benzyl chloride carbonyl synthesis method has carried out many scientific researches in China in recent years and has achieved good results. This method is based on the reaction of carbon monoxide with alkyl halides in the presence of carbonyl metal salts. The reaction conditions are mild, the steps are few, and the toxicity is low. The refining and regeneration gas produced by the synthesis of ammonia from small and medium fertilizer plants can be used as raw materials to save the investment cost of the device. And reduce production costs.