Methyl crotonate hydrogenation over Pt: Effects of support and metal dispersion
Journal article, 2016

Gas-phase hydrogenation of methyl crotonate (MC) has been studied over Pt supported on Al2O3, C, SiO2,and TiO2. The physicochemical properties of the catalysts were characterized by use of N2 physisorption,transmission electron microscopy and CO chemisorption. The effects of Pt dispersion and nature of the support on the catalytic properties of the catalysts were determined by measurements of the kinetic parameters for MC hydrogenation. The results clearly display MC inhibition effects on the hydrogenation over the catalysts. However, the degree of MC-inhibition is found to depend on both the Pt dispersion and the support used. For alumina a high Pt dispersion can promote the resistance of the catalyst against MC-inhibition, and even allow hydrogen adsorption to become equilibrated on the Pt surface. Compared to SiO2 and C supports, Al2O3 improves the resistance of the Pt surface against MC inhibition, whereas TiO2reduces the resistance. Possible reasons are suggested to understand the positive effect of Al2O3 on Pt against MC inhibition.

methyl ester

dispersion

Selective hydrogenation

support

H2 dissociation

Author

Hu Chaoquan

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Reaction Engineering

Competence Centre for Catalysis (KCK)

Derek Creaser

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Reaction Engineering

Sheedeh Fouladvand

Competence Centre for Catalysis (KCK)

Henrik Grönbeck

Competence Centre for Catalysis (KCK)

Chalmers, Physics, Chemical Physics

Magnus Skoglundh

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Applied Surface Chemistry

Applied Catalysis A: General

0926-860X (ISSN) 1873-3875 (eISSN)

Vol. 511 106-116

Areas of Advance

Transport

Subject Categories

Chemical Process Engineering

DOI

10.1016/j.apcata.2015.12.003

More information

Latest update

7/27/2018