Hydrogen production from bio-oil model compounds dry (CO2) reforming over Ni/Al2O3 catalyst
Hydrogen production from bio-oil model compounds dry (CO2) reforming over Ni/Al2O3 catalyst
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DOI：
10.1016/j.ijhydene.2015.11.104
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发表时间：
2016-01
影响因子：
7.2
通讯作者：
M. Fu;W. Qi;Qingli Xu;Suping Zhang;Yong-jie Yan
中科院分区：
文献类型：
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作者：
M. Fu;W. Qi;Qingli Xu;Suping Zhang;Yong-jie Yan
研究了生物油模型化合物在Ni/Al 2 O3催化剂上的CO2干法重整制氢反应。考察了反应温度、水相重时空速（WHSV）、CO2/生物油（CO2/Bio-oil）等反应条件对氢气产率和产物分布的影响。并研究了不同反应温度和CO2/生物油比对焦炭生成速率的影响。同时分析了Ni/Al 2 O3催化剂上积炭的类型。实验结果表明，最佳反应温度为700 °C，CO2/生物油为0.75，WHSV为0.9 h-1，在此条件下，氢气产率和生物油模型化合物转化率分别达到88.19%和96.87%，H2/CO摩尔比达到1.08。生焦速率在600 °C时存在最大值，较高的温度（>600 °C）和较高的CO2/生物油（>0.75）均有利于干重整的脱碳。Ni/Al 2 O3催化剂上的碳存款主要以丝状碳和石墨碳的形式存在。
Bio-oil model compounds dry (CO2) reforming for hydrogen production over Ni/Al2O3catalyst is presented in this paper. The research investigates the effects of reaction conditions such as temperature, weight hourly space velocity of the aqueous phase (WHSV), CO2to carbon in bio-oil ratio (CO2/Bio-oil) on hydrogen yield and products distribution. And also study the coke formation rates versus different reaction temperature and different CO2/Bio-oil ratio. Meanwhile analyze the types of carbon deposited on Ni/Al2O3catalyst. The experimental results show that, the optimum reaction temperature is 700 °C, CO2/Bio-oil is 0.75, WHSV is 0.9 h−1, under these conditions, hydrogen yield and bio-oil model compounds conversion reach 88.19% and 96.87% respectively, the molar ratio of H2/CO reaches 1.08. The coke formation rate exists a maximum at 600 °C, higher temperature (>600 °C) and higher CO2/Bio-oil (>0.75) are all good for carbon elimination of dry reforming. The forms of carbon deposit on Ni/Al2O3catalyst are mainly filamentous carbon and graphitic carbon.