Behavior of highly dispersed platinum catalysts in liquid-phase hydrogenations

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00018a007· OSTI ID:6167100

Gutierrez-Ortiz, M A; Gonzalez-Marcos, J A; Gonzalez-Marcos, M P; Gonzalez-Velasco, J R ^[1]

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1. Univ. del Pais Vasco/Euskal Herriko Unibertsitatea, (Spain). Departamento de Ingenieria Quimica

Group VIII metals are found to present good behavior as hydrogenation catalysts when supported on highly porous materials such as alumina. A series of highly dispersed platinum catalysts supported on alumina has been prepared by means of adsorption from solution, with platinum contents varying from 0.5 to 3.0 wt %. The kinetic behavior of the catalysts has been analyzed for the liquid-phase hydrogenation of benzene in a stirred tank reactor, assuring a chemically-controlled regime for stirring speed above 600 rpm and catalyst particle size below 0.08-0.16 mm in the studied conditions. For a constant dispersion, a certain amount of surface platinum has been found to remain inactive, either due to inaccessibility of the reagents or due to poisoning. As hydrogen pressure increases, the reaction order shifts from 1 to 0. The apparent activation energy resulted in 72 kJ/mol.

• OSTI ID: 6167100
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 32:6; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BENZENE
HYDROGENATION
PLATINUM
CATALYTIC EFFECTS
ACTIVATION ENERGY
ALUMINIUM OXIDES
CATALYST SUPPORTS
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
HYDROGEN
PARTIAL PRESSURE
PARTICLE SIZE
ALUMINIUM COMPOUNDS
AROMATICS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
ENERGY
HYDROCARBONS
INFORMATION
KINETICS
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REACTION KINETICS
SIZE
SYNTHESIS
TRANSITION ELEMENTS
020400* - Petroleum- Processing
400201 - Chemical & Physicochemical Properties