Catalytic methanol decomposition over palladium deposited on thermally stable mesoporous titanium oxide

• Published in: Journal of molecular catalysis. A, Chemical Vol. 198; no. 1; pp. 303 - 308
• Main Authors: Kapoor, Mahendra P., Ichihashi, Yuichi, Kuraoka, Koji, Matsumura, Yasuyuki
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-05-2003; Elsevier
• Subjects: Catalysis; Catalyst support; Catalytic reactions; Chemistry; Exact sciences and technology; EXAFS; General and physical chemistry; Mesoporous titanium oxide; Methanol decomposition; Palladium; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Methanol decomposition; Mesoporous titanium oxide; Palladium; EXAFS; Catalyst support; Catalytic reaction; Hydrogen; Alcohol; Transition metal; Experimental study; Porous material; Supported catalyst; Mesoporosity; EXAFS spectrometry; Heterogeneous catalysis; Chemical decomposition; Carbon monoxide; Titanium oxide; Platinoid; Methanol
• ISSN: 1381-1169; 1873-314X
• DOI: 10.1016/S1381-1169(02)00732-X

Ultrafine palladium particles can be deposited on thermally stable mesoporous titanium oxide, and the catalytic activity for methanol decomposition is significantly higher than that of palladium supported on usual titanium oxide.
Thermally stable mesoporous titanium oxide can be synthesized under non-aqueous conditions by reacting a sodium–glycotitanate(IV) complex and hexadecylamine in ethylene glycol. The mesoporous structure is retained after calcination in air at 350
°C for 5
h. Modification of the compound with palladium by the deposition–precipitation method results in formation of ultrafine palladium particles. Although a fairly large part of the particles are considered to be confined in the blind pores, the catalytic activity for methanol decomposition to carbon monoxide and hydrogen is significantly higher than that of palladium supported on a commercial titanium oxide.