4.6 Article

Enhanced Stability of CaO and/or La2O3 Promoted Pd/Al2O3 Egg-Shell Catalysts in Partial Oxidation of Methane to Syngas

期刊

MOLECULES
卷 18, 期 7, 页码 8289-8297

出版社

MDPI AG
DOI: 10.3390/molecules18078289

关键词

palladium catalysts; egg-shell catalyst; partial oxidation of methane; syngas

资金

  1. Ministry of Science and Technology of China [2012DFA40550]
  2. National Natural Science Foundation of China [21007011, 21177028]
  3. Ph.D. Programs Foundation of the Ministry of Education in China [20100071120012]
  4. Ministry of Education in China

向作者/读者索取更多资源

An egg-shell Pd/Al2O3 catalyst showed higher activity than a regular Pd/Al2O3 catalyst in the partial oxidation of methane to syngas, but a common problem of this reaction is the catalyst deactivation on stream. We attempted to modify the egg-shell catalyst via impregnation with some metal oxide additives. Although the addition of MgO did not show any beneficial effect, the addition of CaO and/or La2O3 significantly improved the stability due to the suppression of carbon deposition and phase transformation of the Al2O3 support. The catalysts were characterized by X-ray diffraction (XRD), N-2 adsorption-desorption, and thermogravimetric analysis (TGA).

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