雷尼镍催化剂的吸附量热研究  

MICROCALORIMETRIC STUDIES OF RANEY NICKEL CATALYSTS

作　　者：王益[1] 沈俭一[1] 

机构地区：[1]南京大学化学系

出　　处：《催化学报》1998年第2期163-165,共3页

基　　金：国家自然科学基金;国家教委跨世纪优秀人才基金

摘　　要：雷尼镍催化剂的吸附量热研究王益沈俭一（南京大学化学系，南京２１００９３）ＨａｎｓＷａｒｌｉｍｏｎｔ（ＩｎｓｔｉｔｕｔｅｆｏｒＳｏｌｉｄＳｔａｔｅａｎｄＭａｔｅｒｉａｌｓＲｅｓｅａｒｃｈ，ＤｒｅｓｄｅｎＤ０１０６９，Ｇｅｒｍａｎｙ）关键词雷尼镍...Raney nickel catalysts were prepared from different Ni-Al alloy precursors by NaOH leaching at 363 K. Two types of Ni-Al alloy precursors were adopted in this work, one is the traditional crystalline Ni-Al alloy (cNi_50Al_50) and another is the rapidly quenched Ni-Al ribbon (rNi_20Al_80). Temperatureprogrammed reduction (TPR) experimental results showed that the catalysts could be reduced at 573K to produce clean surfaces. The microcalorimetric adsorption measurement indicated that the Raney nickel catalyst obtained from the rapidly quenched ribbon exhibited more and stronger sites for the adsorption of CO and H_2 than the conventional Raney nickel catalyst.

关 键 词：雷尼镍 催化剂 镍铝合金 吸附量热 骨架镍 

分 类 号：O643.36[理学—物理化学]