CO和H2在金属/炭表面吸附特征及低温甲醇合成

Methanol synthesis from CO and H2 is a thermodynamically limited reaction, and CO conversion decreases with increasing reaction temperature. The current technologies use Cu/Zn/Al2O3 catalysts at 220-250°C and 5-10MPa, and have a one pass CO conversion of about 12%. This results in a large amount of unreacted syngas recycle and high energy consumption. Development of low temperature methanol synthesis catalysts has been proposed to be a promising way to solve the low conversion problem. With development of a new low temperature catalyst as the final target, this project studies adsorption and desorption behavior of CO and H2 on a series of carbon supported metal catalysts. The main research carried out in 2002 includes: 1) selection of carbon supports, active metal species, as well as evaluation of different formulation of the composite materials; 2) comparison of the prepared materials with a commercial methanol synthesis catalyst (C-130) and a number of Al2O3 supported catalysts; 3) studied on a Cu-Ni/Al2O3 catalyst.

基于炭的低温吸附性能，特别是氢在炭表面的解离吸附，提出了炭载金属氧化物低温催化合成甲醇的观点。主要研究CO、H2和甲醇在炭载体及金属/炭表面的吸附、脱附和迁移规律；煌槌傻慕鹗?炭的合成甲醇活性；金属/炭在反应中的物理化学结构变化，揭示金属与炭南嗷プ饔煤偷臀潞铣杉状嫉拇呋恚杓啤⒅票感滦偷臀录状即呋痢