CO_(2)methanation boosted by support-size-dependent strong metal-support interaction and B-O-Ti component  

作　　者：Shaoyu Yuan Yushan Yang Zhangyi Xiong Peijing Guo Sufang Sun Zejiang Li Jianlong Du Yongjun Gao 

机构地区：[1]College of Chemistry and Environmental Science,Hebei University,No.180,Wusidong Road,Baoding,071002,Hebei,China

出　　处：《Green Energy & Environment》2024年第2期321-332,共12页绿色能源与环境（英文版）

基　　金：supported by National Natural Science Foundation of China(21773053);Advanced Talents Incubation Program of Hebei University(801260201019);Research Innovation Team of College of Chemistry and Environmental Science of Hebei University(hxkytd-py2102);the support of the High-Performance Computing Center of Hebei University。

摘　　要：Strong metal-support interaction(SMSI)has a great impact on the activity and selectivity of heterogeneous catalysts,which was usually adjusted by changing reduction temperature or processing catalyst in different atmosphere.However,few researches concentrate on modulating SMSI through regulating the structure of the support.Herein,we show how changing the surface environment of the anatase TiO_(2)(B–TiO_(2))can be used to modulate the SMSI.The moderate TiOx overlayer makes the Ni metal highly dispersed on the high specific surface area of support,resulting in a substantially enhanced CO_(2)methanation rate.Besides,a novel phenomenon was observed that boron dopants promote the for-mation of the B–O–Ti interface site,enhancing the catalytic performance of CO_(2)hydrogenation.DFT calculations confirm that the B–O–Ti structure facilitates the activation of CO_(2)and further hydrogenation to methane.

关 键 词：CO_(2)Methanation B-doped TiO_(2) SMSI SIZE-DEPENDENT 

分 类 号：X701[环境科学与工程—环境工程]