助剂对4-甲氧基苯酚一步加氢制备4-甲氧基环己酮用Pd/C改性研究  

Effects of additives on Pd/C catalyst for one-step hydrogenation of 4-methoxyphenol to 4-methoxycyclohexanone

作　　者：张鹏 闫江梅 李岳锋 万克柔 唐良 李凡 耿克伟 Zhang Peng;Yan Jiangmei;Li Yuefeng;Wan Kerou;Tang Liang;Li Fan;Geng Kewei(Xi'an Catalyst Chemical Co.,Ltd.,Xi'an 710201,Shaanxi,China;Shaanxi Engineering Research Center of Noble Metal Catalyst,Xi'an 710016,Shaanxi,China)

机构地区：[1]西安凯立新材料股份有限公司,陕西西安710201 [2]国家贵金属催化剂工程研究中心,陕西西安710201

出　　处：《工业催化》2019年第12期38-40,共3页Industrial Catalysis

摘　　要：以不同助剂改性自制的Pd/C催化剂,考察催化剂改性对4-甲氧基苯酚加氢性能影响。结果表明,EDTA·2Na改性对催化剂性能影响较小;NaNO2和ZnCl2改性后,催化剂活性明显降低,但催化剂选择性提高;NaHCO3、Na2CO3和Na2B4O7改性后,催化剂活性和选择性均显著提高;Na2B4O7-ZnCl2改性,Pd/C效果最好,4-甲氧基环己酮选择性大于97%,催化剂具有良好稳定性。A series of Pd/C catalysts modified with different additives was prepared and the effects of additives on catalytic performance for hydrogenation of 4-methoxyphenol was investigated.The results showed that the modification of EDTA·2Na had little effect on Pd/C.After modification of NaNO2 and ZnCl2,the activity of the catalyst was obviously reduced,but the selectivity of the catalyst was improved.The activity and selectivity of the catalyst modified by NaHCO3,Na2CO3 and Na2B4O7 were both improved.Finally,the performance of Pd/C modified by Na2B4O7-ZnCl2 was the best.The selectivity of 4-methoxycyclo hexanone was more than 97%,and the catalyst had excellent stability.

关 键 词：催化剂工程 4-甲氧基环己酮 对羟基苯甲醚 PD/C 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]