Reforming of C6 Hydrocarbons Over Model Pt Nanoparticle Catalysts

Autor:	Selim Alayoglu, Kwangjin An, Vladimir V. Pushkarev, Nathan Musselwhite, Simon K. Beaumont, Gabor A. Somorjai
Rok vydání:	2012
Předmět:	chemistry.chemical_compound chemistry 2-Methylpentane Hydrogenolysis Nanoparticle General Chemistry Particle size Benzene Photochemistry Isomerization Catalysis Methylcyclopentane
Zdroj:	Topics in Catalysis. 55:723-730
ISSN:	1572-9028 1022-5528
DOI:	10.1007/s11244-012-9873-4
Popis:	Size-controlled model Pt nanoparticle catalysts, synthesized by colloidal chemistry, were used to study the hydrogenative reforming of three C6 hydrocarbons in mixtures with 5:1 excess of H2: methylcyclopentane, n-hexane and 2-methylpentane. We found a strong particle size dependence on the distribution of different reaction products for the hydrogenolysis of methylcyclopentane. The reactions of 50 Torr methylcyclopentane in 250 Torr H2 at 320 °C, using 1.5 and 3.0 nm Pt nanoparticles produced predominantly C6 isomers, especially 2-methylpentane, whereas 5.2 and 11.3 nm Pt nanoparticles were more selective for the formation of benzene. For the hydrogenolysis of n-hexane and 2-methylpentane, strong particle size effects on the turnover rates were observed. Hexane and 2-methylpentane reacted up to an order of magnitude slower over 3.0 nm Pt than over the other particle sizes. At 360 °C the isomerization reactions were more selective than the other reaction pathways over 3.0 nm Pt, which also yielded relatively less benzene.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f10c1e7544b0a2e3803a9f4b584feb0 https://doi.org/10.1007/s11244-012-9873-4 Zobrazit plný text záznamu Plný text ve formátu PDF