摘要
常见的气体如CO、CO2、CH4和H2O(g)在钯膜表面占据了H2的吸附活性位,抑制膜表面氢的解离,或者在膜表面形成积炭,或者与钯生成化合物,从而影响钯膜的透氢性能。本文综述了这些气体在不同条件下对钯膜透氢的影响程度,分析了CO和H2O(g)影响钯膜透氢的作用机理,阐述了积炭现象以及不同膜厚度和膜组成对钯膜透氢性能的影响。
The presence methane inhibits the hydrogen of surface contaminations such as carbon monoxide, steam, carbon dioxide and dissociation and recombination reactions in palladium membranes due to the fact that these contaminations occupy the active sites for hydrogen adsorption and form compounds with palladium or deposit carbon adhere to surface, therefore influence the hydrogen permeability of palladium membranes. This paper gives a comprehensive review on the effects of these familiar gases on the hydrogen permeability of palladium membranes in various conditions, summarizes a thorough analysis of the poisoning effects and mechanisms of carbon monoxide and steam, illuminates the effects of deposited carbon, and at last explains the effects of the thickness and composition of membranes on hydrogen permeability.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2007年第2期54-59,共6页
Natural Gas Chemical Industry
关键词
钯膜
透氢
一氧化碳
水汽
二氧化碳
甲烷
palladium membrane
hydrogen permeation
carbon monoxide
steam
carbon dioxide
methane
