乙醇蒸汽重整Pd/γ-Al_2O

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。

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	王皓
	张悦
	马新宾

关键词：乙醇蒸汽重整反应 Pd/Al2O3催化剂氢

Abstract： 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-Al_2O_3 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/Al_2O_3(weight ratio)under(650 ℃) reactor temperature.And hydrogen selectivity up to 110% was obtained at temperature close to(750 ℃) with 1%Pd/Al_2O_3(weight ratio)catalyst.Pd/Al_2O_3 catalysts was characterized using NH_3-TPD,TGA.

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Received 2007-09-15; published 2007-09-15

引用本文:

王皓;张悦;马新宾;.乙醇蒸汽重整Pd/γ-Al_2O_3催化剂制氢[J]. 化学工业与工程, 2007,24(5): 389-393

WANG Hao,ZHANG Yue,MA Xin-bin.Hydrogen Production by Ethanol Steam Reforming over Pd/γ-Al_2O_3 Catalyst[J]. Chemcial Industry and Engineering, 2007,24(5): 389-393

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