摘要
用ＴＰ－ＩＲ动态方法研究了Ｒｈ／Ａｌ_２Ｏ_３上ＣＯ的歧化及其与Ｈ_２的作用，用微反装置考察了ＣＯ加氢反应。结果表明，Ｒｈ上的孪生、线式和桥式ＣＯ的歧化温度基本相同（２６０℃），且不受Ｒｈ粒子分散度的影响、ＣＯ和Ｈ_２在Ｒｈ上共吸附形成表面羰基氢化物种，Ｃ－Ｏ键受到削弱而易于解离。ＣＯ加氢生成烃类的反应主要是通过表面羰基氢化物途径进行的。
he Bouduard reaction of CO on Rh/Al2O3 has been studied by TP-IR dynamic method, and CO+H2 reaction over Rh/Al2O3 also investigated in a flowing microreactor.The results show that temperatures for theBouduard reaction of gemel, linear and bridged CO on Rh/Al2O3 are about the same (260℃ ), and not effected by the dispersion of Rh particles. Surface carbonyl hydride species is formed in coadsorption of CO and H2 on Rh,thereby C-O bond is easy to break down.Hydrogenation of CO to hydrocarbons is mainly conducted via carbonyl hydride.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1994年第5期1-6,共6页
Natural Gas Chemical Industry
基金
国家自然科学基金
关键词
催化剂
铑催化剂
一氧化碳
歧化
加氢
烃
Rh catalyst, CO Bouduard reaction, CO hydrogenation, TP-IR dynamic method
