文献类型：期刊文献

英文题名：Facet-Dependent Performance of Hydroxylated Anodic Boehmite for Catalyzing Gaseous Formaldehyde Oxidation

作者：Zhang, Qi[1];Wang, Tianyu[1];Fu, Wenzhao[1];Duan, Xuezhi[1];Xuan, Shaofeng[2]

机构：[1]East China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Huaming Hitech Grp Co Ltd, Shanghai, Peoples R China

年份：2018

卷号：148

期号：7

起止页码：1904

外文期刊名：CATALYSIS LETTERS

收录：;EI(收录号：20182005187990);WOS:【SCI-EXPANDED(收录号:WOS:000435944500011)】；

基金：This work was financially supported by the Natural Science Foundation of Shanghai (Grant No. 16ZR1408200) and Fundamental Research Funds for the Central Universities (Grant No. 222201817013).

语种：英文

外文关键词：Structured catalyst; Exposed facets; HCHO decomposition; a-AlOOH

摘要：Structured mesoporous anodic AlOOH (a-AlOOH) with dominant facets were developed and investigated in terms of the catalytic performance in formaldehyde oxidation. The activity of mesh-type a-AlOOH in the elimination of formaldehyde was compared with those of commercial AlOOH, a-gamma-Al2O3 (calcined AlOOH), commercial gamma-Al2O3, and AAO. The results show that a-AlOOH exhibit the highest catalytic activity toward the decomposition of gaseous formaldehyde. It was found that at the lower temperature range (< 50 A degrees C), CO2 were only detected over a-AlOOH, which indicated that formaldehyde oxidation reaction was carried out at low temperature over a-AlOOH but not just adsorption as reported. To clarify the phenomenon, XRD, SEM, HRTEM, XPS and TGA were performed, and the results show that a-AlOOH crystallized in the form of thin films could be due to the predominance of well-developed {031} {200} {002} facets containing exposed numerous reactive surface hydroxyls, which are preferred for the formaldehyde oxidation reaction. Furthermore, these hydroxyls enhanced the removal efficiency and contributed to the fast recovery ability and stability of the catalyst in water vapor environment. [GRAPHICS] .