Catalytic oxidation of hydrogen over Au/TiO2 catalysts

Autor:	H. Dyrbeck, Magnus Rønning, Nina Hammer, Edd A. Blekkan
Rok vydání:	2007
Předmět:	Hydrogen Inorganic chemistry chemistry.chemical_element General Chemistry Combustion Endothermic process Oxygen Catalysis chemistry.chemical_compound chemistry Catalytic oxidation Propane Dehydrogenation
Zdroj:	Topics in Catalysis. 45:21-24
ISSN:	1572-9028 1022-5528
DOI:	10.1007/s11244-007-0234-7
Popis:	Selective catalytic oxidation of hydrogen in the presence of hydrocarbons was studied in a fixed bed quartz reactor, over 3 wt%Au/TiO2 and 5 wt%Au/TiO2 catalysts. This reaction can be utilised in the production of light alkenes via catalytic dehydrogenation, providing in situ heat to the endothermic dehydrogenation reaction and simultaneously removing a fraction of the produced hydrogen. It is important to avoid the non-selective combustion of the hydrocarbons in the mixture. Both 3 wt%Au/TiO2 and 5 wt%Au/TiO2 are active for the combustion of hydrogen, but in a gas mixture with propane and oxygen the selectivity is dependent upon the feed ratio of hydrogen and oxygen. At 550 °C, with propane present, no carbon oxides are formed when the H2:O2 ratio is four, but at lower ratios some CO2 and some CO is formed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6050bebdc078269eb180f4f254ea73d0 https://doi.org/10.1007/s11244-007-0234-7 Zobrazit plný text záznamu Plný text ve formátu PDF