镍负载量对Ni/MgO(111)催化甲烷二氧化碳重整反应性能影响

李琳; 张露明; 张煜华; 李金林

镍负载量对Ni/MgO(111)催化甲烷二氧化碳重整反应性能影响

中南民族大学化学与材料科学学院, 湖北武汉 430074

基金项目: 国家自然科学基金青年基金(21403304)。

详细信息

通讯作者:
李琳,副教授,湖北洪湖人,Tel:027-67842752,Fax:027-67842752,E-mail:lilinchem@mail.scuec.edu.cn;李金林,教授,Tel:027-67842752,Fax:027-67842752,E-mail:jinlinli@aliyun.com。

中图分类号: O643
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出版历程
- 收稿日期: 2014-11-05
- 刊出日期: 2015-03-30

Effect of Ni loadings on the catalytic properties of Ni/MgO(111) catalyst for the reforming of methane with carbon dioxide

Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China

摘要

摘要: 研究了MgO(111)负载镍基催化剂催化甲烷二氧化碳重整反应性能,针对镍负载量对反应活性和稳定性的影响进行了探讨。结果表明,随着镍负载量从2%增加到10%,催化剂的活性和稳定性均有所提高,但是当镍负载量进一步增加到20%时,催化剂的活性和稳定性略有下降。利用透射电子显微镜、X射线衍射和H₂吸附脱附等手段对催化剂结构进行了表征,利用热重分析、拉曼光谱和透射电镜等手段对反应后回收的催化剂进行了表征。研究发现,随着镍负载量的增大,活性金属镍的颗粒粒径呈现增长趋势,并且在反应过程中显示出不同的失活方式。2%Ni/MgO(111)催化剂的失活原因主要以Ni粒子的氧化为主,而负载量大于2%的Ni/MgO(111)催化剂的失活原因则是以积炭为主。
- 甲烷二氧化碳重整 /
- 镍负载量 /
- MgO(111) /
- 镍基催化剂 /
- 失活
Abstract: The catalytic properties of MgO(111) nanosheet-supported Ni were investigated for the reforming of methane with carbon dioxide with the emphasis on the effect of nickel loadings. The catalytic activity and stability increased with increasing Ni loadings from 2% to 10%, while a further increase in the Ni loading from 10% to 20% led to a negative result. The TEM, XRD, H₂-TPD, TG and Raman characterization results show that the deactivation behavior of Ni/MgO(111) depends on the amount of Ni, while the Ni particle size increased with increasing Ni loadings. The deactivation of the sample with 2% of Ni was probably caused by the Ni oxidation, whereas that of the catalyst with higher content of Ni was due to the deposition of carbonaceous materials.
- carbon dioxide reforming of methane /
- nickel loading amounts /
- MgO(111) /
- nickel catalysts /
- deactivation

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参考文献(26)

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镍负载量对Ni/MgO(111)催化甲烷二氧化碳重整反应性能影响

通讯作者:
李琳,副教授,湖北洪湖人,Tel:027-67842752,Fax:027-67842752,E-mail:lilinchem@mail.scuec.edu.cn;李金林,教授,Tel:027-67842752,Fax:027-67842752,E-mail:jinlinli@aliyun.com。

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Effect of Ni loadings on the catalytic properties of Ni/MgO(111) catalyst for the reforming of methane with carbon dioxide

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镍负载量对Ni/MgO(111)催化甲烷二氧化碳重整反应性能影响

通讯作者: 李琳,副教授,湖北洪湖人,Tel:027-67842752,Fax:027-67842752,E-mail:lilinchem@mail.scuec.edu.cn;李金林,教授,Tel:027-67842752,Fax:027-67842752,E-mail:jinlinli@aliyun.com。

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出版历程

Effect of Ni loadings on the catalytic properties of Ni/MgO(111) catalyst for the reforming of methane with carbon dioxide

计量

出版历程

目录

2023年《燃料化学学报（中英文）》评优结果公布！

通讯作者:
李琳,副教授,湖北洪湖人,Tel:027-67842752,Fax:027-67842752,E-mail:lilinchem@mail.scuec.edu.cn;李金林,教授,Tel:027-67842752,Fax:027-67842752,E-mail:jinlinli@aliyun.com。