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Investigation on binary copper-based catalysts used in the ethanol steam reforming process
Reaction Kinetics, Mechanisms and Catalysis ( IF 1.8 ) Pub Date : 2020-07-15 , DOI: 10.1007/s11144-020-01824-6
Łukasz Hamryszak , Maria Madej-Lachowska , Maria Kulawska , Małgorzata Ruggiero-Mikołajczyk , Katarzyna Samson , Michał Śliwa

The use of copper-based binary catalysts, Cu/Zr oxides and Cu/Al oxides, has been examined to produce hydrogen from ethanol in the ethanol steam reforming process. The examined catalysts were compared with non-noble bicomponent catalysts consisting of oxides of nickel and cobalt: Ni/Zr Co/Zr, Ni/Al and Co/Al, prepared and tested in the identical way. Catalytic tests were carried out in the fixed-bed reactor in the temperature range 433–873 K for initial molar ratio of ethanol to water equal to 1:3. Ethanol conversion approached near 100%. Catalysts were characterized by XRD, TPR. Cu/Zr oxides. The catalyst showed very good selectivity. It is significant that carbon monoxide appeared only above 600 K and its selectivity has not exceeded 3% in the higher temperature range. No methane has been detected. Hydrogen yield was relatively stable in the temperature range from 513 to 873 K. Similarly, in the presence of Cu/Al oxides neither CO nor CH4 were found in the products. The correlation between activity of examined catalysts and textural properties was not found.



中文翻译:

乙醇蒸汽重整过程中使用的二元铜基催化剂的研究

在乙醇蒸汽重整过程中,已经研究了使用铜基二元催化剂,Cu / Zr氧化物和Cu / Al氧化物从乙醇中制氢。将所检查的催化剂与由镍和钴的氧化物:Ni / Zr Co / Zr,Ni / Al和Co / Al组成的非贵金属双组分催化剂进行比较,并以相同的方式对其进行测试。在固定床反应器中于433–873 K的温度范围内进行了催化测试,测试中乙醇与水的初始摩尔比等于1:3。乙醇转化率接近100%。催化剂通过XRD,TPR表征。铜/锆氧化物催化剂显示出非常好的选择性。值得注意的是,一氧化碳仅出现在600 K以上,并且在较高温度范围内其选择性未超过3%。未检测到甲烷。在513至873 K的温度范围内,氢的产率相对稳定。类似地,在存在Cu / Al氧化物的情况下,产品中均未发现CO和CH 4。未发现所检查的催化剂的活性与质构性质之间的相关性。

更新日期:2020-07-15
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