文献类型：期刊文献

英文题名：Synthesis of C21H38ClN Assisted Si Pillared Clays and the Effects of CeO2 Addition on Its Supported Palladium Catalyst for Benzene Oxidation

作者：Zhao, Bo[2];Cheng, Zhen[1];Zheng, Jie[1];Wang, Zhuo[1];Zuo, Shufeng[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Taizhou Univ, Sch Pharmaceut & Mat Engn, Taizhou 318000, Peoples R China

年份：2021

卷号：151

期号：11

起止页码：3287

外文期刊名：CATALYSIS LETTERS

收录：SCI-EXPANDED(收录号：WOS:000620913200001)、、WOS

基金：The authors would like to thank the support provided by Zhejiang Public Welfare Technology Research Project (LGG19B070003) and Foundation of Science and Technology of the Shaoxing City (2018C10019).

语种：英文

外文关键词：Silicon pillared clays; CeO2; Palladium; Benzene; Catalytic combustion

外文摘要：Mesoporous silica-pillared clays (SPC) were prepared with C21H38ClN cationic surfactant as template and supported PdOx catalysts were prepared by impregnation method. The influence of addition of CeO2 on benzene combustion was evaluated. The samples were characterized by N-2 adsorption-desorption, XRD, XPS, HRTEM and TPSR. Compared with the raw montmorillonite, the d(001) value of SPC increased from 0.96 to 3.45 nm. Furthermore, the surface area was increased from 30 to 835 m(2)/g and the pore volume was increased from 0.11 to 1.30 cm(3)/g, respectively. The addition of CeO2 increased oxygen vacancies and improved the dispersion of PdOx on SPC, and the optimal addition of CeO2 was 10%. Therefore, of all the catalysts, 0.3%Pd/10%Ce/SPC could completely oxidize benzene at 280 degrees C, showing the highest catalytic activity. This catalyst showed high activity for benzene oxidation in wet conditions with or without Cl- displaying good durability, which should be related to the presence of Ce3+ on the surface of catalyst after reaction. The excellent pore structure of SPC, improved dispersion of PdOx and high concentration of Ce3+ on the catalyst surface were the key factors for the high catalytic activity of 0.3%Pd/10%Ce/SPC. [GRAPHICS] .