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《Chemical Researches》 2001-03
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Effects of the Preparation Method of Noble-metal Ir Catalysts

WANG Yan_ling1, CHU Wei 1*, ZHANG Tao2, SUN Xiao_ying 2 (1. Chengdu Institute of Organic Chemistry, CAS, Chengdu 610041; 2. Dalian Institute of Chemical Physics, CAS, Dalian 116023)  
The alumina supported Ir catalysts were prepared by on e- step co-impregnation method and two-step-wet impregnation method. The TPD techni ques were used for characterizing the influences of the preparation methods, of the calcination temperature and of CeO 2 content on the catalyst reduction and absorption property. It is found that we could give more active centre by two-st ep wet impregnation mathod than one-step coimpregnation; the most active centr e of CeO 2 content 1.2%; and when joined in Mg, noble metal was prone to reduct ion; but when joined in Ce, noble metal was hardly reduced.
【Fund】: 国家自然科学基金项目 (2 990 3 0 11) ;; 中国科学院大连化物所横向资助项目
【CateGory Index】: O643.3
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