Jung Sang Chul, Park Young-Kwon, Park Hyuk Ryeol, Kang Ung Il, Jung Ho-Young, Shim Wang Geun, Kim Sang Chai
Department of Environmental Engineering, Sunchon National University, Suncheon, 57975, Korea.
School of Environmental Engineering, University of Seoul, Seoul 02504, Korea.
J Nanosci Nanotechnol. 2019 Feb 1;19(2):1208-1212. doi: 10.1166/jnn.2019.15950.
Catalytic combustion of benzene, toluene, and hexane (BTH) was carried out to investigate in this study the effect of palladium precursor on the property and performance of 1 wt.% Pd/-Al₂O₃. Properties were characterized by X-ray diffraction (XRD), Brunauer Emmett Teller (BET) surface area, temperature programmed reduction (TPR), Transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) analyses. When palladium precursor was used to prepare the catalyst, it had a great effect on the property and performance of the supported palladium catalyst. Total acidity, size of palladium particle, and oxidation state of palladium were associated with catalytic activity of the catalyst. Higher total acidity of the catalyst and larger particle size of palladium favorably affected the catalytic activity. In addition, palladium species with high oxidation state might be useful to increase catalytic activity in BTH combustion.
本研究通过对苯、甲苯和己烷（BTH）进行催化燃烧，考察了钯前驱体对1 wt.% Pd/γ-Al₂O₃催化剂性能的影响。采用X射线衍射（XRD）、布鲁诺尔-埃米特-泰勒（BET）比表面积、程序升温还原（TPR）、透射电子显微镜（TEM）和X射线光电子能谱（XPS）分析对催化剂性能进行了表征。使用钯前驱体制备催化剂时，其对负载型钯催化剂的性能有很大影响。催化剂的总酸度、钯颗粒尺寸和钯的氧化态与催化剂的催化活性相关。催化剂较高的总酸度和较大的钯颗粒尺寸对催化活性有有利影响。此外，高氧化态的钯物种可能有助于提高BTH燃烧中的催化活性。
