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制备方法对 Ni-Al2O3催化剂在 CO2-CH4重整反应中 催化性能的影响

莫文龙 ,  马凤云 ,  刘月娥 ,  刘景梅 ,  钟梅 ,  艾沙·努拉洪

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引用本文: 莫文龙, 马凤云, 刘月娥, 刘景梅, 钟梅, 艾沙·努拉洪. 制备方法对 Ni-Al2O3催化剂在 CO2-CH4重整反应中 催化性能的影响[J]. 燃料化学学报, 2015, 43(9): 1083-1091. shu
Citation:  MO Wen-long, MA Feng-yun, LIU Yue-e, LIU Jing-mei, ZHONG Mei,  Effect of preparation methods on the catalytic performance of Ni-Al2O3 for CO2-CH4 reforming[J]. Journal of Fuel Chemistry and Technology, 2015, 43(9): 1083-1091. shu

制备方法对 Ni-Al2O3催化剂在 CO2-CH4重整反应中 催化性能的影响

    通讯作者: 马凤云(1955-),女,教授,E-mail:ma_fy@126.com。
  • 基金项目:

    国家高技术研究发展计划("863"计划, 2015AA050502) ("863"计划, 2015AA050502)

    新疆大学博士研究生创新项目(XJUBSCX-2013008)。 (XJUBSCX-2013008)

摘要: 为提高镍基催化剂的干法重整活性,采用溶液燃烧法、等体积浸渍法、胶体磨循环浸渍法和水热-沉积法制备了SCM、IMP、T310和HTP四种催化剂,在800 ℃考察了其在CO2-CH4重整反应中的催化性能,并结合ICP-AES、N2吸附-脱附、XRD、H2-TPR和TEM等表征手段对催化剂进行分析。结果表明,水热-沉积法和胶体磨循环浸渍法制备的催化剂比表面积较大,分别为190.83和182.21 m2/g,可为反应提供较多的接触面积,进而提高催化剂的初始活性(HTP试样CH4和CO2初始转化率相对较高,分别达85.15%和90.84%);而溶液燃烧法和等体积浸渍法制备的催化剂具有较多的NiAl2O4尖晶石,其还原峰面积占总还原峰面积90%以上,还原后可获得更多晶粒粒径更小的稳定活性组分Ni(SCM和IMP试样稳定性更好,反应50 h后活性超过HTP和T310试样,100 h后CH4转化率方降至50%以下)。因此,决定催化剂稳定活性的更重要的因素应该是活性组分Ni晶粒粒径的大小及其抗烧结能力的强弱。

English

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  • 收稿日期:  2015-05-02
  • 网络出版日期:  2015-07-11
通讯作者: 陈斌, bchen63@163.com
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