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Pd/MWCNTs贫燃甲烷催化燃烧性能研究

高秀慧 ,  王胜 ,  高典楠 ,  刘为钢 ,  陈志萍 ,  汪明哲 ,  王树东

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引用本文: 高秀慧, 王胜, 高典楠, 刘为钢, 陈志萍, 汪明哲, 王树东. Pd/MWCNTs贫燃甲烷催化燃烧性能研究[J]. 燃料化学学报, 2016, 44(08): 928-936. shu
Citation:  GAO Xiu-hui, WANG Sheng, GAO Dian-nan, LIU Wei-gang, CHEN Zhi-ping, WANG Ming-zhe, WANG Shu-dong. Catalytic combustion of methane over Pd/MWCNTs under lean fuel conditions[J]. Journal of Fuel Chemistry and Technology, 2016, 44(08): 928-936. shu

Pd/MWCNTs贫燃甲烷催化燃烧性能研究

  • 1.

    1. 中国科学院大连化学物理研究所 洁净能源国家实验室, 辽宁 大连 116023;

  • 2.

    2. 中国科学院大学, 北京 100049

    • 通讯作者: 王胜
  • 基金项目:

    国家自然科学基金（21306185，21276250) 

    国家重大研究开发项目（2016YFC0204305）资助 

摘要: 以MWCNTs为载体，用HNO3做氧化剂对MWCNTs进行处理，通过XPS研究了处理前后MWCNTs表面官能团的变化，并采用超声浸渍法制得Pd/MWCNTs催化剂，借助TEM，揭示了Pd粒子在催化剂表面分散度和粒径与MWCNTs表面含氧量、羟基和羰基间的关系。并考察了Pd/MWCNTs催化剂预处理方法对低浓甲烷催化燃烧活性和稳定性的影响，研究表明，Pd的价态以及Pd粒子的粒径，都与催化剂的甲烷燃烧活性直接关联。单质Pd的氧化和Pd粒径的长大是导致催化剂性能衰减的原因。通过原位FT-IR技术对反应气氛下中间物种的监测，提出了Pd/MWCNTs催化剂上的低浓度甲烷催化氧化反应机理。

English

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  • 收稿日期:  2016-04-05
  • 网络出版日期:  2016-06-07
通讯作者: 陈斌, bchen63@163.com
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