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

AC Larsson; M Rahmani; K Arnby; M Sohrabi; M Skoglundh; N Cruise; Mehri Sanati

doi:10.1007/s11244-007-0251-6

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

AC Larsson, M Rahmani, K Arnby, M Sohrabi, M Skoglundh, N Cruise, Mehri Sanati

Ergonomics and Aerosol Technology

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	121-124
Journal	Topics in Catalysis
Volume	45
Issue number	1-4
DOIs	https://doi.org/10.1007/s11244-007-0251-6
Publication status	Published - 2007

Subject classification (UKÄ)

Production Engineering, Human Work Science and Ergonomics

Free keywords

deactivation - platinum - volatile organic compounds - ethyl acetate - organosilicon

Access to Document

10.1007/s11244-007-0251-6

Cite this

@article{d5b66ed3273343de998228376bcc6183,

title = "Pilot-scale investigation of Pt/alumina catalysts deactivation by organosilicon in the total oxidation of hydrocarbons",

abstract = "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.",

keywords = "deactivation - platinum - volatile organic compounds - ethyl acetate - organosilicon",

author = "AC Larsson and M Rahmani and K Arnby and M Sohrabi and M Skoglundh and N Cruise and Mehri Sanati",

year = "2007",

doi = "10.1007/s11244-007-0251-6",

language = "English",

volume = "45",

pages = "121--124",

journal = "Topics in Catalysis",

issn = "1572-9028",

publisher = "Springer",

number = "1-4",

}

TY - JOUR

T1 - Pilot-scale investigation of Pt/alumina catalysts deactivation by organosilicon in the total oxidation of hydrocarbons

AU - Larsson, AC

AU - Rahmani, M

AU - Arnby, K

AU - Sohrabi, M

AU - Skoglundh, M

AU - Cruise, N

AU - Sanati, Mehri

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

KW - deactivation - platinum - volatile organic compounds - ethyl acetate - organosilicon

U2 - 10.1007/s11244-007-0251-6

DO - 10.1007/s11244-007-0251-6

M3 - Article

SN - 1572-9028

VL - 45

SP - 121

EP - 124

JO - Topics in Catalysis

JF - Topics in Catalysis

IS - 1-4

ER -

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

Abstract

Subject classification (UKÄ)

Free keywords

Access to Document

Fingerprint

Cite this