非晶态Co（Ni）－B合金催化剂的TPD－MS研究  

Study on Amorphous Alloy Catalyst by TPD-MS

作　　者：张菊[1] 郑小明[1] 

机构地区：[1]杭州大学催化研究所

出　　处：《科技通报》1996年第3期134-138,共5页Bulletin of Science and Technology

基　　金：浙江省教育委员会基金

摘　　要：用化学还原法制备了非晶态合金催化剂Ｎｉ－Ｂ、Ｃｏ－Ｂ和Ｃｏ－Ｎｉ－Ｂ．合金的非晶性质由Ｘ射线衍射（ＸＲＤ）及透射电子显微镜（ＴＥＭ）鉴定．组成用电感耦合等离子发射光谱（ＩＣＰ）分析．在高真空程序升温脱附质谱（ＴＰＤ－ＭＳ）装置上研究了ＣＯ、Ｈ２在三种催化剂上的吸附及ＣＯ和Ｈ２的表面反应（ＴＰＳＲ）．发现ＣＯ和Ｈ２在三种催化剂上分别有二种和一种吸附态，吸附强度和二种吸附态的数目在不同合金上有较大差异．ＣＯ加氢反应的主要产物是ＣＨ４、ＣＯ２和Ｈ２Ｏ，其中ＣＯ在催化剂表面上的解离是反应的控制步骤．The amorphous alloy catalysts Ni-B,Co-B and Co-Ni-B were prepared by chemical reduction method.The X-ray diffraction (XRD) and transmission electron micrograph (TEM) methods were used to verify the amorphous state and particles sizes. The content was analysed by inductively coupled plasma (ICP). The chemisorption of CO, H2 and their surface reaction on three catalysts were studied by temperature programmed desorption-massspectrograph (TPD-MS). It was found that there were one or two kinds of sorption states on three catalysts for CO and H2 respectively. The intensity and quantity of sorption state were different for different amorphous alloys. The main products of hydrogenation of CO were CH4, CO2 and H2O. The mechanism of hydrogenation of carbon monoxide was proposed.

关 键 词：非晶态合金 催化剂 TPD-MS 一氧化碳 加氢 

分 类 号：O643.36[理学—物理化学]