乙醇蒸汽重整Pd/γ-Al_2O_3催化剂制氢  

Hydrogen Production by Ethanol Steam Reforming over Pd/γ-Al_2O_3 Catalyst

作　　者：王皓[1] 张悦[1] 马新宾[1] 

机构地区：[1]天津大学化工学院绿色化学与合成重点实验室,天津300072

出　　处：《化学工业与工程》2007年第5期389-393,共5页Chemical Industry and Engineering

基　　金：教育部新世纪优秀人才计划资助项目(NCET-04-0242)

摘　　要：通过对不同Pd负载量、温度以及寿命的考察,评价了负载型Pd/γ-Al2O3催化剂在乙醇蒸汽重整制氢的催化反应中的性能。试验表明较高的Pd负载量或者较高的反应温度可以获得理想的氢气选择性。在650℃反应温度下,对含Pd为5%(质量分数)的Pd/Al2O3催化剂进行考察获得了最高的氢气选择性136%。而且在反应温度为750℃条件下,含Pd为1%(质量分数)的Pd/Al2O3催化剂对氢气的选择性可以达到110%。通过NH3-TPD,TGA分析手段对催化剂进行表征分析。The reaction of ethanol steam reforming for hydrogen-rich gas streams production, over a commercial alumina supported palladium catalyst was investigated. In particular, the dependence of the catalytic activity and selectivity on reaction temperature, Pd loading with γ-Al2O3 was studied, In order to evaluate the catalytic stability, long-term experiments were also performed. Hydrogen selectivity was proportional to the high Pd loading or high reactor temperature. Hydrogen selectivity up to maximum value（136%） were obtained at 5% Pd/Al2O3（weight ratio）under 650℃reactor temperature. And hydrogen selectivity up to 110% was obtained at temperature close to 750 ℃ with 1% Pd/Al2O3 （weight ratio） catalyst. Pd/Al2O3 catalysts was characterized using NH3-TPD, TGA.

关 键 词：乙醇 蒸汽重整反应 PD/AL2O3催化剂 氢 

分 类 号：TQ031.4[化学工程]