Influences of synthesis methods and modifier addition on the properties of Ni-based catalysts supported on reticulated ceramic foams

作     者：Vesna Nikolic Zeljko Kamberovic Zoran Antic Marija Korac Miroslav Sokic Vesna Maksimovic 

作者机构：Innovation Center of the Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11120 Belgrade Serbia Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11120 Belgrade Serbia Innovation Center of the Faculty of Chemistry University of Belgrade Studentski trg 12-16 11000 Belgrade Serbia Institute for Technology of Nuclear and other Raw Materials Bulevar Frans d'Eperea 86 11000 Belgrade Serbia Institute for Nuclear Sciences ‘Vinca’ Mike Petrovica Alasa 12-14 11001 Belgrade Serbia 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2014年第21卷第8期

页      面：806-812页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the Ministry of Education  Science and Technological Development of the Republic of Serbia and is a result of projects No. 34033 and No. 34023 

主　　题：catalysts nickel ceramic foams modification aerosol process catalytic properties 

摘      要：A method of synthesizing Ni-based catalysts supported on α-Al2O3-based foams was developed. The foams were impregnated with aqueous solutions of metal chlorides under an air atmosphere using an aerosol route. Separate procedures involved calcination to form oxides and drying to obtain chlorides on the foam surface. The synthesized samples were subsequently reduced with hydrogen. With respect to the Ni/Al2O3 catalysts, the chloride reduction route enabled the formation ofa Ni coating without agglomerates or cracks. Further research included catalyst modification by the addition of Pd, Cu, and Fe. The influences of the additives on the degree of reduction and on the low-temperature reduction effectiveness （533 and 633 K） were examined and compared for the catalysts obtained from oxides and chlorides. Greater degrees of reduction were achieved with chlorides, whereas Pd was the most effective modifier among those investigated. The reduction process was nearly complete at 533 K in the sample that contained 0.1wt% Pd. A lower reduction temperature was utilized, and the calcination step was avoided, which may enhance the economical and technological aspects of the developed catalyst production method.