Pilot-scale investigation of Pt/alumina catalysts deactivation by organosilicon in the total oxidation of hydrocarbons
Journal article, 2007

The deactivation of alumina-supported platinum catalyst for VOC oxidation by long-term exposure for hexamethyldisiloxane (HMDS) has been investigated in a pilot scale reactor for up to 1000 h of exposure. Catalyst samples were characterized by ICP-AES, BET and silicon deposition by SEM. Catalyst activity was investigated using oxidation of ethyl acetate showing deactivation of the catalyst samples as exposed to HMDS increasing with exposure time. Silicon was shown to deposit on the catalyst as well as on the blank alumina support. SEM investigation of an individual pellet revealed a radial eggshell silicon distribution. CO chemisorption showed strong decrease of Pt active sites after deactivation, while still maintaining reasonable oxidation levels of ethyl acetate.

HYDROGEN

platinum

HEXAMETHYLDISILOXANE HMDS

ethyl acetate

METHANE

GAS

volatile organic compounds

deactivation

PALLADIUM

INHIBITION

PLATINUM

organosilicon

Author

A. C. Larsson

Vaxjo universitet

Mohammad Rahmani

Vaxjo universitet

Karl Arnby

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Competence Centre for Catalysis (KCK)

M. Sohrabi

Amirkabir University of Technology

Magnus Skoglundh

Competence Centre for Catalysis (KCK)

Chalmers, Chemical and Biological Engineering

Neil Cruise

Perstorp Formox

Mehri Sanati

Vaxjo universitet

Topics in Catalysis

1022-5528 (ISSN) 1572-9028 (eISSN)

Vol. 45 1-4 121-124

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Transport

Energy

Materials Science

Subject Categories

Chemical Engineering

DOI

10.1007/s11244-007-0251-6

More information

Created

10/7/2017