AuCl_3-CuCl_2/γ-Al_2O_3乙炔氢氯化催化剂的失活原因分析及再生性能研究  

DEACTIVATION AND REGENERATION OF NON-MERCURY CATALYST AuCl_3-CuCl_2/γ-Al_2O_3

作　　者：程晓光[1] 赵基钢[1] 王雷[1,2] 沈本贤[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237 [2]天津大沽化工股份有限公司

出　　处：《石油炼制与化工》2014年第12期43-46,共4页Petroleum Processing and Petrochemicals

基　　金：中央高校基本科研业务费专项资金资助项目(WA1214003);天津市滨海新区塘沽科技发展专项资金资助项目(2012STHB04-01)

摘　　要：采用γ-Al2O3为载体通过浸渍法制备了AuCl3-CuCl2/γ-Al2O3催化剂,考察其对乙炔氢氯化反应的催化性能,并用比表面积及孔径分析、扫描电镜、能谱仪、傅里叶变换红外光谱、电感耦合等离子体原子发射光谱等表征方法对催化剂的失活原因进行分析。结果表明:在温度150℃、压力0.1 MPa、空速120h-1、V(HCl)∶V(C2H2)=1.05的工艺条件下,乙炔转化率达到97%以上,氯乙烯选择性达到99%以上,但反应3h后催化剂活性迅速降低;催化剂表面积炭为其失活的主要原因。将失活催化剂在空气氛围、500℃下焙烧1h后,其活性基本能恢复至新鲜催化剂水平,说明该催化剂具有优异的再生性能。A non﹣mercury AuCl3﹣CuCl2∕γ﹣Al2 O3 catalyst was prepared by impregnation method usingγ﹣Al2 O3 as support. The catalytic properties for acetylene hydrogen chloride reaction were explored in a fixed bed reactor. The catalyst was characterized by SEM﹣EDS,FT﹣IR,inductively coupled plasma atomic emission spectrum and BET analysis to see the reason for catalyst deactivation. The results show that acetylene conversion reaches more than 9 7%and the vinyl chloride selectivity is more than 9 9%un﹣der the conditions of a temperature of 150 ℃,a pressure of 0. 1 MPa,a WHSV of 120 h-1 ,a volume ra﹣tio of HCl to C2 H2 equaling to 1. 05∶1. However,the high activity can only keep for 3 h. The analysis found that the carbon deposit on the catalyst surface is the main reason for the deactivation. It proved that the catalyst activity can be recovered to the fresh level after regeneration in air for 1 h at 500 ℃.

关 键 词：乙炔氢氯化 氧化铝 载体 失活 再生 

分 类 号：TQ426[化学工程]