邻氯苯胺合成用催化剂的制备工艺研究  

Preparation technology of catalyst for synthesis of o-chloraniline

作　　者：颜攀敦 陈丹 张彬雁 张洁兰 Yan Pandun;Chen Dan;Zhang Binyan;Zhang Jielan(Kaili Catalyst&New Materials Co.,Ltd.,Xi’an 710201,Shaanxi,China;National&Local Joint Engineering Research Center for New Noble Metal Catalysts R&D Technology,Xi’an 710201,Shaanxi,China;Shaanxi Key Laboratory of Catalytic Materials and Technology,Xi’an 710201,Shaanxi,China;Xi’an Key Laboratory of Catalytic Materials and Technology,Xi’an 710201,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]新型贵金属催化剂研发技术国家地方联合工程研究中心,陕西西安710201 [3]陕西省催化材料与技术重点实验室,陕西西安710201 [4]西安市催化材料与技术重点实验室,陕西西安710201

出　　处：《工业催化》2023年第7期54-58,共5页Industrial Catalysis

基　　金：高效有机液体储氢工艺技术及其催化剂的研发与产业化(2021ZDLGY13-04)。

摘　　要：用浸渍还原法制备了Pd/C、Pt/C、Ru/C三种炭载催化剂,考察其在邻氯硝基苯加氢合成邻氯苯胺反应中的催化性能,筛选出Pd/C催化剂效果最佳。进一步基于Pd/C催化剂,对载体进行硼酸处理及在钯前驱体中添加锡盐,硼氢化钠还原制备出改性钯锡炭催化剂,与氯钯酸前驱体制备的催化剂相比,改性的钯锡炭催化剂催化活性和选择性明显提高,且脱氯率明显降低。Three carbon supported catalysts,Pd/C,Pt/C and Ru/C,are prepared by impregnation reduction method and tested in hydrogenation of o-chloronitrobenzene(o-CNB)to o-chloroaniline(o-CAN).Among them,Pd/C catalyst shows the best catalytic performance.Further,based on Pd/C,the modified Pd-Sn/C catalyst is prepared by boric acid treatment of the support,adding tin salt to the palladium precursor,and co-reduction of palladium and tin precursor with sodium borohydride.Compared with the catalyst prepared by chloropalladium acid precursor,the catalytic activity of the modified Pd-Sn/C catalyst is significantly improved,and the dehalogenation efficiency is significantly reduced.

关 键 词：催化剂工程 邻氯硝基苯 邻氯苯胺 钯锡炭催化剂 脱氯率 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]