Co-La-Ni/Al_2O_3催化甘油水蒸气重整制氢  

Hydrogen Production by Glycerol Steam Reforming over Co-La-Ni/Al_2O_3 Catalyst

作　　者：张志凯[1] 周慧珍[1] 李晓阳 许庆利[1] 张素平[1] 颜涌捷[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]上海华西化工科技有限公司,上海201315

出　　处：《石油化工》2015年第6期689-694,共6页Petrochemical Technology

基　　金：国家自然科学基金项目(21376084);中国科学院可再生能源重点实验室开放基金项目(y207kb1001)

摘　　要：以浸渍法制备的Co-La-Ni/Al2O3为催化剂,在固定床反应器中对生物质甘油水蒸气重整制氢反应进行了研究;考察了反应温度、重时空速及进料中水与甘油中碳的摩尔比(水碳比)对反应的影响,同时考察了催化剂的稳定性并对积碳进行分析。实验结果表明,氢产率、潜在氢产率和气相碳转化率随重时空速的增加而逐渐下降,随温度的升高而增大;水碳比的增加在一定程度上有助于促进氢产率、潜在氢产率和气相碳转化率的提高;随反应时间的延长,催化剂的活性因积碳的产生略有降低,反应20 h后趋于稳定。在温度为700℃、水碳比为3、重时空速为2.5 h-1的条件下,氢产率和潜在氢产率分别达到118.15 g/kg和136.41 g/kg,气相碳转化率达到96.36%。对于甘油水蒸气重整制氢反应,Co-La-Ni/Al2O3催化剂具有较好的催化作用及稳定性。The Co-La-Ni/Al2O3 catalyst was prepared by impregnation. Hydrogen production by the steam reforming of glycerol over the Co-La-Ni/Al2O3 catalyst was studied in a fi xed bed reactor. The effects of temperature,WHSV and mole ratio of H2 O to C in glycerol（S/C） on the reforming were investigated. The stability of the catalyst and the carbon deposition on the catalyst were researched. The results showed that the hydrogen yield,potential hydrogen yield and carbon conversion in the gas phase gradually decreased with the increase of WHSV. With temperature rise,the hydrogen yield,potential hydrogen yield and carbon conversion in the gas phase gradually increased. Increasing S/C could promote the steam reforming of glycerol to a certain extent. The hydrogen yield,potential hydrogen yield and carbon conversion reached 118.15 g/kg,136.41 g/kg and 96.36% under the conditions of 700 ℃,S/C 3 and WHSV 2.5 h^-1. The Co-La-Ni/Al2O3 catalyst showed a good stability too.

关 键 词：生物质甘油 金属催化剂 催化重整 制氢 

分 类 号：TQ116.2[化学工程—无机化工]