氧化硅改性二氧化钛催化乙苯脱氢制苯乙烯  

Dehydrogenation of Ethylbenzene to Styrene Over TiO Modified With SiO2

作　　者：赵葛新 袁海亮 ZHAO Ge-xin;YUAN Hai-liang(Sinopec Catalyst Co.,Ltd.,Fushun Division,Fushun Liaoning 113122,China;Sinopec Catalyst Dalian Co.,Ltd.,Dalian Liaoning 116043,China)

机构地区：[1]中国石化催化剂有限公司抚顺分公司,辽宁抚顺113122 [2]中石化催化剂大连有限公司,辽宁大连116043

出　　处：《辽宁化工》2020年第8期940-941,944,共3页Liaoning Chemical Industry

摘　　要：通过溶胶凝胶法制备了二氧化钛、二氧化硅和钛硅复合氧化物催化剂,并通过BET、SEM对催化剂结构进行表征。结果表明:与TiO2相比,加入二氧化硅合成Ti-Si氧化物比表面积明显增大,提高了乙苯脱氢合成苯乙烯性能。在600℃下,乙苯的转化率和苯乙烯选择性达到50.1%和93.4%。TiO2, SiO2 and Ti-Si complex oxide catalysts were prepared by sol-gel method. The catalysts prepared was characterized by BET and SEM. The results indicated that the BET surface area of Ti-Si complex oxide was improved by adding SiO2 compared with TiO2, therefore the catalytic performance of Ti-Si complex oxide was improved for dehydrogenation of ethylbenzene to styrene. At 600 ℃, the conversion of ethylbenzene and the selectivity of styrene were 50.1% and 93.4%.

关 键 词：钛硅复合氧化物 乙苯 苯乙烯 

分 类 号：O643.32[理学—物理化学]