负载型镍催化剂用于催化加氢制备对氯苯胺  

Preparation of p-Chloroaniline via Catalytic Hydrogenation With KT-02 Supported Nickel Catalyst

作　　者：唐蓉萍[1] 何小荣[1] 杨兴锴[1] 索陇宁[1] 曹福军 伍家卫[1] 

机构地区：[1]兰州石化职业技术学院石油化学工程系,甘肃兰州730060 [2]甘肃中科药源生物工程股份有限公司,甘肃兰州730087

出　　处：《当代化工》2012年第12期1299-1301,共3页Contemporary Chemical Industry

基　　金：甘肃省省属高校基本科研业务费资助项目甘财教(2009-192)

摘　　要：以KT-02新型Ni/SiO2为催化剂,催化对氯硝基苯加氢制备对氯苯胺,考察了反应条件如温度、压力、搅拌速度及催化剂加入量等因素对反应的影响,并对催化剂进行了套用实验。结果表明,以甲醇为溶剂,加入10%催化剂和适量脱氯抑制剂三乙醇胺,在90℃、2.0 MPa氢气条件下反应8 h,对氯硝基苯转化率大于99%,对氯苯胺的选择性大于97%,脱氯反应得到有效抑制。本催化剂可套用8次以上。P-Chloroaniline was prepared from p-chloronitrobenzene with KT-02 supported nikel catalyst. Effects of temperature, pressure, catalyst dosage and stirring speed on the reaction were studied. The results show that the optimum conditions are as follows： reaction temperature 90-95 C, reaction time 8 h, the hydrogen pressure 2.0 MPa.Under above conditions, the conversion of p-CNB and selectivity of p-CAN can achieve 100% and 97%. The catalyst KT-02 can be reused as many as 8 times.

关 键 词：KT-02负载型镍催化剂 加氢 对氯硝基苯 对氯苯胺 

分 类 号：TQ426[化学工程]