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Fe2O3含量对Cu-Fe/铝土矿水煤气变换催化剂结构和性能的影响

江莉龙 ,  刘弦 ,  曹彦宁 ,  曾杰凯 ,  林施团 ,  魏可镁

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引用本文: 江莉龙, 刘弦, 曹彦宁, 曾杰凯, 林施团, 魏可镁. Fe2O3含量对Cu-Fe/铝土矿水煤气变换催化剂结构和性能的影响[J]. 无机化学学报, 2013, 29(11): 2297-2304. doi: 10.3969/j.issn.1001-4861.2013.00.338 shu
Citation:  JIANG Li-Long, LIU Xian, CAO Yan-Ning, ZENG Jie-Kai, LIN Shi-Tuan, WEI Ke-Mei. Effect of Fe2O3 Content on Structure and Catalytic Performance of Cu-Fe/Bauxite for Water Gas Shift Reaction[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(11): 2297-2304. doi: 10.3969/j.issn.1001-4861.2013.00.338 shu

Fe2O3含量对Cu-Fe/铝土矿水煤气变换催化剂结构和性能的影响

  • 基金项目:

    福建省科技厅产学重大项目（No.2012H6010） 

    福建省自然科学基金(No.2011J01036) (No.2011J01036)

    福州大学育苗基金(No.2012-XY-5)资助项目。 (No.2012-XY-5)

摘要: 利用具有高比表面积和介孔结构的改性铝土矿为载体,采用并流共沉淀法制备不同Fe2O3含量的Cu-Fe/铝土矿催化剂。以水煤气变换反应为探针反应,考察了催化剂性能。利用X射线荧光元素分析(XRF)、X射线粉末衍射(XRD)、H2程序升温还原(H2-TPR)、CO程序升温脱附(CO-TPD)和X射线光电子能谱(XPS)等对催化剂进行了表征。结果表明:负载的Fe2O3能显著提高CuO/改性铝土矿催化剂的水煤气变换活性特别是热稳定性能,且随负载的Fe2O3含量增加而提高,当负载量为20%时达到最佳。其原因是负载的Fe2O3和CuO之间发生了相互作用,形成了类似于CuFe2O4复合氧化物,且随负载的Fe2O3含量的增加而增强,这种相互作用同时促进了CuO和Fe2O3的还原,抑制了CuO的烧结,进而提高了催化剂的性能。

English

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  • 收稿日期:  2013-03-09
  • 网络出版日期:  2013-06-06
通讯作者: 陈斌, bchen63@163.com
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