CO2 Reforming of CH4 over Xerogel Ni-Ti and Ni-Ti-Al Catalysts
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- 作者：Haijun Sun ; Jian Huang ; Hui Wang ; Jianguo Zhang
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2007
- 出版时间：June 20, 2007
- 年：2007
- 卷：46
- 期：13
- 页码：4444 - 4450
- 全文大小：143K
- 年卷期：v.46,no.13(June 20, 2007)
- ISSN：1520-5045
文摘
CO2 reforming of CH4 reaction was studied over the Ni based xerogel catalysts. The Ni-Ti and Ni-Ti-Alxerogel composites were prepared using the sol-gel method and reduced in H2-N2 mixture gas. The reactionwas conducted at 973 K in a micropacked-bed reactor. Brunauer-Emmett-Teller (BET), X-ray diffraction(XRD), and thermogravimetric/differential thermal analysis (TG/DTA) were used to characterize the freshand spent (after reaction) catalyst samples. Compared with the published data, it has been found that thecarbon deposition on both Ni-Ti and Ni-Ti-Al xerogel catalysts is effectively suppressed. Ni-Ti-Al xerogelcatalyst reveals higher activity and longer stability than Ni-Ti xerogel catalyst does, due to its larger surfacearea and more resistance to Ti reduction. However, further study is anticipated to eliminate the carbon depositionon these xerogel catalysts.