Steam reforming of methanol using supported Mo2C catalysts

Autor:	Su Ha, Sean S.-Y. Lin, William J. Thomson, Timothy J. Hagensen
Rok vydání:	2007
Předmět:	Steam reforming chemistry.chemical_compound chemistry Methanation Process Chemistry and Technology Catalyst support Inorganic chemistry Water gas Methanol Heterogeneous catalysis Catalysis Water-gas shift reaction
Zdroj:	Applied Catalysis A: General. 318:121-127
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2006.10.054
Popis:	Two supported molybdenum carbide catalysts, Mo2C supported on γ-alumina (Mo2C/γ-Al2O3) and zirconia (Mo2C/ZrO2), were investigated as an alternative catalyst for steam reforming of methanol. The catalysts were prepared by a temperature-programmed reaction (TPR) method, and it was found that the supported Mo2C catalysts are superior to an unsupported catalyst, with Mo2C/ZrO2 having a higher hydrogen yield than Mo2C/γ-Al2O3. We hypothesize that the suppression of methanation by interaction between molybdenum carbide and the zirconia support resulted in the increased hydrogen yield. Results from diffuse-reflectance infrared spectroscopy (DRIFTS) suggested that the ability of the zirconia support to retain methoxy groups while resisting the formation of hydroxyl groups on its surface is a key factor leading to a molybdenum carbide/zirconia support interaction which suppresses methanation. Under the operating conditions of a steam-to-carbon ratio of 1 and 400 °C, the reforming activity of the Mo2C/ZrO2 catalyst remained stable for longer than 10 h.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fab7da5c94271868eeb4167cc750b21d https://doi.org/10.1016/j.apcata.2006.10.054 Zobrazit plný text záznamu Full Text from ScienceDirect