The present invention relates to a method for producing diarylmethanes represented by the following formula (III)
wherein R¹ to R³ each stand for a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. This method comprises the reaction of a benzyl chloride represented by the following general formula (I) with benzene or an alkylbenzene represented by the following general formula (II):
wherein R¹ to R³ have the same meanings as defined above. and is characterized in that the catalyst used is an HY or HL type zeolite having a SiO₂/Al₂O₃ molar ratio of 4 -10 and an alkali metal content of 5% by weight or less, calculated as an alkali metal oxide, or a zeolite obtained by the exchange of said NY or HL type zeolite with cations of a di- or tri-valent metal.
本发明涉及一种生产下式(III)所代表的二芳基
甲烷的方法
其中 R¹ 至 R³ 分别代表氢原子或具有 1 至 3 个碳原子的烷基。该方法包括如下通式 (I) 所代表的苄基
氯与如下通式 (II) 所代表的苯或烷基苯反应:
其中 R¹ 至 R³ 的含义与上述定义相同。其特征在于,所用催化剂是一种 HY 或 HL 型
沸石,其 SiO₂/Al₂O₃ 摩尔比为 4 -10,碱
金属含量为 5%(重量)或以下(以碱金属氧化物计算),或者是一种通过将所述 NY 或 HL 型
沸石与二价或三价
金属阳离子交换而得到的
沸石。