Preparation of a Pd/Al2O3 Catalyst with Microwave-Induced Plasma Jet Irradiation under Atmospheric Pressure

被引：15

作者：

Chung, Jai Young ^{[1
]}

Kodama, Satoshi ^{[1
]}

Sekiguchi, Hidetoshi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Sch Mat & Chem Technol, Dept Chem Sci & Engn, Meguro Ku, Tokyo 1528550, Japan

来源：

NANOMATERIALS | 2019年 / 9卷 / 12期

关键词：

microwave-induced plasma; Pd; Al2O3; catalyst; acetylene hydrogenation; SELECTIVE HYDROGENATION; HEAT-TRANSFER; ACETYLENE; REDUCTION; GIBBSITE; METHANE;

D O I：

10.3390/nano9121734

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Microwave-induced plasma under atmospheric pressure is an effective technique for catalyst preparation. A Pd/Al2O3 catalyst was prepared using a fixed bed with microwave plasma irradiation. The activity of the catalyst was compared with that of catalysts made using the plasma spouted bed and the conventional furnace. From the results of X-ray powder diffraction (XRD) spectra and transmission electron microscopy (TEM) images, plasma treatment induced a rapid reduction process (PdO -> Pd). Moreover, the plasma treatment derived the growth of a different facet from Pd (111) to Pd (100). A different kind of phase transition behavior was observed with plasma-treated alumina. H-2 chemisorption analysis confirmed that the plasma treatment had a positive effect on the dispersion of Pd metal on the support. These improvements to the properties of the catalyst resulted in excellent performance in hydrogenation of acetylene.

引用

页数：11

共 35 条

[1] Analytical TEM study on the dispersion of Au nanoparticles in Au/TiO2 catalyst prepared under various temperatures [J].