无模板剂一锅法合成介孔Ni-CaO-ZrO2 催化剂及其在CH4-CO2重整反应中的应用研究

王长真; 司兰杰; 李海; 闻霞; 孙楠楠; 赵宁; 魏伟; 孙予罕

无模板剂一锅法合成介孔Ni-CaO-ZrO₂ 催化剂及其在CH₄-CO₂重整反应中的应用研究

王长真^1,2,
司兰杰¹,
李海³,
闻霞⁴,
孙楠楠¹,
赵宁¹,
魏伟^1,4,,
孙予罕^1,5

1.
中国科学院山西煤炭化学研究所煤转化国家重点实验室, 山西太原 030001;
2.
中国科学院大学, 北京 100049;
3.
重庆理工大学化学化工学院, 重庆 400054;
4.
中国科学院上海高等研究院温室气体与环境工程中心, 上海 201203;
5.
中国科学院上海高等研究院低碳转化中心, 上海 201203

基金项目: 国家重点基础研究发展规划(973计划, 2011CB201405);国家自然科学基金(21203230);山西省自然科学基金(2012021005-5)。

详细信息

通讯作者:
魏伟(1971-),山东临沂人,研究员,Tel:0351-4049612,E-mail:weiwei@sxicc.ac.cn。

中图分类号: O643
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出版历程
- 收稿日期: 2013-06-10
- 修回日期: 2013-08-20
- 刊出日期: 2013-10-30

Template-free one-pot synthesis of mesoporous Ni-CaO-ZrO₂ catalyst and its application in CH₄-CO₂ reforming

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Department of Chemistry and Chemical Engineering Chongqing University of Technology, Chongqing 400054, China;
4.
Center for Greenhouse Gas and Environmental Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China;
5.
Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China

摘要

摘要: 通过无模板剂一锅法制备出一种具有较大比表面积和孔容的介孔Ni-CaO-ZrO₂催化剂,并将其用于CH₄-CO₂重整反应过程。利用N₂吸附-脱附(BET)、SEM、TEM、X射线粉末衍射(XRD)、程序升温还原(H₂-TPR)以及热重(TG)等手段对催化剂进行了表征。结果表明,该催化剂具有较强的金属-载体相互作用,这种强金属-载体相互作用(SMSI)使Ni与载体紧密接触,有利于吸附物种在界面进行快速反应,使催化剂在反应过程中具有较高的反应活性和稳定性。虽然反应后的催化剂表面有一定量的积炭生成,但这些积炭多以丝状碳为主,并不会覆盖催化剂的活性位点。
- 无模板剂 /
- 一锅法 /
- 镍基催化剂 /
- 甲烷重整 /
- 介孔 /
- 二氧化碳
Abstract: A novel mesoporous Ni-CaO-ZrO₂ catalyst with high surface area and pore volume was prepared by one-pot template-free method and applied in CH₄-CO₂ reforming. The mesoporous Ni-CaO-ZrO₂ catalyst was characterized by means of nitrogen sorption, SEM, TEM, XRD, H₂-TPR and TG-DSC. The results indicated that a strong metal support interaction (SMSI) present in the Ni-CaO-ZrO₂ catalyst induces an intimate contact between Ni and ZrO₂ nano-particles, which is favorable for the surface reaction of adsorbed reactant species for CH₄-CO₂ reforming. Owing to the mesoporous framework and SMSI, the Ni-CaO-ZrO₂ catalyst shows promising activity and stability in CH₄-CO₂ reforming. Most of the carbonaceous deposits on the catalyst surface are in whisker form, which does not cover the active sites and then has little influence on the catalyst stability.
- template-free /
- one-pot /
- nickel-based catalyst /
- methane reforming /
- mesoporous catalyst /
- carbon dioxide

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参考文献(18)

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