摘要
利用HSC 6.0热化学数据库对Cu/ZnO/Al_2O_3水汽变换催化剂CS_2中毒进行了热力学计算。分析了催化剂的活性组分、抗毒成分和载体在变换条件下可能发生的化学反应和产物。结果表明:变换原料气组分(CO、H_2O)能引起催化剂CS_2中毒。其中,CO对催化剂CS_2中毒的影响最大,中毒产物为CuS、SO_3和C。温度高于280℃时,ZnO提高了催化剂的抗毒性。Al_2O_3载体化学性质未受到反应气氛(CS_2、CO、H_2O)的明显影响。
Thermodynamics of poisoning on Cu/ZnO/Al2O3 water-gas shift catalyst with CS2 was calculated by HSC 6.0 thermochemical databases.The chemical reactions and products on active components,anti-toxic compo- nents and supports of the catalyst were analyzed.The results showed that the components （CO and H2O） of the feed gas for water-gas shift reaction cause CS2 poisoning on catalyst. CO present a great influence on CS2 poisoning, the poisoning products are CuS, SO3 and C.At temperatures up to 280℃ ,the anti-toxic characteristic of catalyst is enhanced by ZnO.The chemical characteristic of Al2O3 support is not significantly affected in the reaction atmo- sphere （CS2,CO and H2O）.
出处
《化学工程师》
CAS
2018年第1期21-26,共6页
Chemical Engineer
基金
国家自然科学基金(51768074)
云南省教育厅科学研究基金项目(2013Y088)
