Ni-Fe/蒙脱土催化剂催化乙醇水蒸气重整制氢的研究

李宝茹 殷雪梅 吴旭 安霞 谢鲜梅

引用本文: 李宝茹, 殷雪梅, 吴旭, 安霞, 谢鲜梅. Ni-Fe/蒙脱土催化剂催化乙醇水蒸气重整制氢的研究[J]. 燃料化学学报, 2016, 44(08): 993-1000. shu
Citation:  LI Bao-ru, YIN Xue-mei, WU Xu, AN Xia, XIE Xian-mei. Montmorillonite supported Ni-Fe catalysts for hydrogen production from steam reforming of ethanol[J]. Journal of Fuel Chemistry and Technology, 2016, 44(08): 993-1000. shu

Ni-Fe/蒙脱土催化剂催化乙醇水蒸气重整制氢的研究

    通讯作者: 谢鲜梅
  • 基金项目:

    国家自然科学基金(51541210) 

    山西省自然科学基金(2013021008-4)资助 

摘要: 采用浸渍法制备了一系列Ni-Fe/蒙脱土(MMT)催化剂,并应用于乙醇水蒸气重整制氢反应(ESR)。采用X射线衍射(XRD)、N2吸附脱附分析和H2-程序升温还原(H2-TPR)表征手段对催化剂的物理化学性质、还原性能、碳沉积等进行了研究。结果表明,Ni-Fe/MMT催化剂中,Ni、Fe高度分散在载体MMT层间及表面,而且Fe的加入降低了Ni颗粒的粒径,增强了Ni2+与载体的相互作用力。以10Ni5Fe/MMT为催化剂,在反应温度为500℃、水醇比为3:1、空速为12h-1,反应进行30h后,乙醇转化率为100%,氢气选择性仍保持72%,副产物CO和CH4含量明显降低。这是因为催化助剂Fe的引入,一方面,提高了Ni的分散度,使得ESR低温活性较好;另一方面,减小了Ni颗粒粒径,小颗粒的Ni有利于抑制甲烷的生成,并且Fe的加入加强了甲烷重整和水煤气变换反应,提高产物中氢气的选择性。

English

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  • 收稿日期:  2016-02-04
  • 网络出版日期:  2016-05-12
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