Effect of different reduction methods on Pd/Al_(2)O_(3) for o-xylene oxidation at low temperature  

作　　者：Mingyu Fan Yafei Wang Jianghao Zhang Changbin Zhang Xue Han 

机构地区：[1]Beijing Institute of Petrochemical Technology,Beijing 102617,China [2]State Key Joint Laboratory of Environment Simulation and Pollution Control,Research Center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [3]General Research Institute for Non-Ferrous Metals,Beijing 100088,China

出　　处：《Journal of Environmental Sciences》2023年第3期95-100,共6页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 21936005 and 21806011)。

摘　　要：Pd/Al_(2)O_(3)was pretreated by CO,H_(2)and NaBH_(4)reduction,respectively.The reduced catalysts were tested for o-xylene oxidation and characterized by power X-ray diffraction(XRD),transmission electron microscopy (TEM),X-ray photoelectron spectroscopy (XPS) and temperature-programmed decomposition of palladium hydride (TPDH).The characterizations indicate the pretreatments lead to distinct Pd particle sizes and amount of surface activated oxygen species,which are responsible for the catalytic performance.Compared with H_(2)and NaBH_(4)reduction methods,CO reduction shows a strong interaction between Pd and Al_(2)O_(3)with smaller Pd particle size and more surface activated oxygen.It exhibited excellent catalytic performance,complete oxidation of 50 ppmV o-xylene at 85℃with a WHSV of 60,000 mL/(g·hr).

关 键 词：PD Reduction method Catalytic oxidation O-XYLENE 

分 类 号：X701[环境科学与工程—环境工程]