Steam reforming of biomass based oxygenates—Mechanism of acetic acid activation on supported platinum catalysts

The activation of acetic acid during steam reforming reactions over Pt-based catalysts has been probed by decomposing CH 3COOD over Pt/C. The product mixture contained CO 2, CH 4 and its D-analogs ( CH 4 − x D x , 0 ⩽ x ⩽ 4 ), H 2, HD and D 2. CO 2, CH 3D and D 2 are typically primary desorption pro...

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Veröffentlicht in:	Journal of catalysis 2008-07, Vol.257 (1), p.229-231
Hauptverfasser:	Matas Güell, B., Babich, I., Seshan, K., Lefferts, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetic acid Acids Catalysis Catalyst Catalysts Chemical reactions Chemistry Exact sciences and technology General and physical chemistry H–D exchange Mechanism Platinum Steam reforming Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Zusammenfassung:	The activation of acetic acid during steam reforming reactions over Pt-based catalysts has been probed by decomposing CH 3COOD over Pt/C. The product mixture contained CO 2, CH 4 and its D-analogs ( CH 4 − x D x , 0 ⩽ x ⩽ 4 ), H 2, HD and D 2. CO 2, CH 3D and D 2 are typically primary desorption products whereas the rest originate from hydrogen redistribution reactions and H–D exchange. The bifunctional mechanistic pathways suggested earlier [K. Takanabe, K. Aika, K. Seshan, L. Lefferts, J. Catal. 227 (2004) 101–108; K. Takanabe, K.-i. Aika, K. Inazu, T. Baba, K. Seshan, L. Lefferts, J. Catal. 243 (2006) 263–269] for the steam reforming of acetic acid over Pt/ZrO 2 are substantiated.
ISSN:	0021-9517 1090-2694
DOI:	10.1016/j.jcat.2008.04.019