A comparative study on catalyst deactivation of nickel and cobalt incorporated MCM-41 catalysts modified by platinum in methane reforming with carbon dioxide
A comparative study on catalyst deactivation of nickel and cobalt incorporated MCM-41 catalysts modified by platinum in methane reforming with carbon dioxide
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DOI：
10.1016/j.cattod.2010.03.054
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发表时间：
2010-09
期刊：
影响因子：
5.3
通讯作者：
Dapeng Liu;Wei Ni Evelyn Cheo;Yiyo Lim;A. Borgna;Raymond Lau;Yanhui Yang
中科院分区：
文献类型：
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作者：
Dapeng Liu;Wei Ni Evelyn Cheo;Yiyo Lim;A. Borgna;Raymond Lau;Yanhui Yang
对Pt改性Co-和Ni-MCM-41上CO2干重整甲烷进行了比较研究。 Co和Ni离子的掺入是通过直接水热法完成的，而Pt是通过传统的湿浸渍法引入的。催化结果表明，与未改性的Co-和Ni-MCM-41催化剂相比，引入适量的Pt表现出更高的活性。在长期稳定性测试中，Pt浸渍的Ni-MCM-41具有最高的转化率和催化稳定性，而与Pt浸渍的Co-MCM-41相比，催化活性显着下降，也低于Pt浸渍的MCM-41。 Pt 的作用被认为是由于其较低的碳沉积倾向。表征结果表明Pt与Co或Ni之间存在很强的相互作用，有利于催化性能的提高。
Methane dry reforming with CO2over Pt modified Co- and Ni-MCM-41 was comparatively studied. The incorporation of Co and Ni ions was completed by direct hydrothermal method while Pt was introduced by conventional wet impregnation. The catalytic results showed the introduction of an appropriate amount of Pt exhibited a higher activity compared to the unmodified Co- and Ni-MCM-41 catalysts. In the long-term stability test, Pt impregnated Ni-MCM-41 gave the highest conversion and catalytic stability, while a remarkable decrease of catalytic activity was observed over Pt impregnated Co-MCM-41, which was also lower than that of Pt impregnated MCM-41. The effect of Pt was suggested to be due to its lower tendency to carbon deposition. Characterization results showed a strong interaction between Pt and Co or Ni which facilitated the improvement of catalytic performance.