A-Site Effect on the Conversion of Bio-Ethanol into Isobutene over Ternary A₁Zn_yZr_zO_n Catalysts  

作　　者：Feng Liu Yong Men Jinguo Wang Xiaoxiong Huang Biao Zhao Rong He Feng Liu;Yong Men;Jinguo Wang;Xiaoxiong Huang;Biao Zhao;Rong He(College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China)

机构地区：[1]College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China

出　　处：《Modern Research in Catalysis》2016年第3期95-101,共7页催化剂现代研究（英文）

摘　　要：Ternary multifunctional A₁Zn_yZr_zO_n catalysts are prepared by introducing A-site transition metals with the redox capability into binary Zn₁Zr₈O_n. Structure and morphology were investigated by means of XRD, BET and FESEM, respectively. Activity data showed that Cr addition exhibited obvious beneficial effect to promote isobutene production from direct conversion of bio-ethanol compared to other A-site metal dopants. A significant higher yield of isobutene over Cr-promoted Zn₁Zr₈O_n catalyst was also observed with respect to its binary Zn₁Zr₈O_n counterpart. The choice of A-site metal is of prime importance in the isobutene production, catalyzing mainly the ethanol dehydrogenation, meanwhile the appropriate addition of zinc on the catalyst surface is also essential for good isobutene yield.Ternary multifunctional A₁Zn_yZr_zO_n catalysts are prepared by introducing A-site transition metals with the redox capability into binary Zn₁Zr₈O_n. Structure and morphology were investigated by means of XRD, BET and FESEM, respectively. Activity data showed that Cr addition exhibited obvious beneficial effect to promote isobutene production from direct conversion of bio-ethanol compared to other A-site metal dopants. A significant higher yield of isobutene over Cr-promoted Zn₁Zr₈O_n catalyst was also observed with respect to its binary Zn₁Zr₈O_n counterpart. The choice of A-site metal is of prime importance in the isobutene production, catalyzing mainly the ethanol dehydrogenation, meanwhile the appropriate addition of zinc on the catalyst surface is also essential for good isobutene yield.

关 键 词：A₁Zn₁Zr₈O_n Bio-Ethanol to Isobutene Multifunctional Catalysts The Redox Capability Dehydrogenation 

分 类 号：O64[理学—物理化学]