CAJ | 학술논문

采用γ﹣Al2 O3为载体通过浸渍法制备了 AuCl3﹣CuCl2∕γ﹣Al2 O3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120 h﹣1、V（HCl）∶V（C2 H2）＝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3 h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1 h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。
채용γ﹣Al2 O3위재체통과침지법제비료 AuCl3﹣CuCl2∕γ﹣Al2 O3최화제，고찰기대을결경록화반응적최화성능，병용비표면적급공경분석、소묘전경、능보의、부리협변환홍외광보、전감우합등리자체원자발사광보등표정방법대최화제적실활원인진행분석。결과표명：재온도150℃、압력0．1 MPa、공속120 h﹣1、V（HCl）∶V（C2 H2）＝1．05적공예조건하，을결전화솔체도97％이상，록을희선택성체도99％이상，단반응3 h후최화제활성신속강저；최화제표면적탄위기실활적주요원인。장실활최화제재공기분위、500℃하배소1 h후，기활성기본능회복지신선최화제수평，설명해최화제구유우이적재생성능。
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 ℃.