BROWSE

Related Researcher

Author's Photo

An, Kwangjin
Advanced Nanocatalysis Lab (An Lab)
Research Interests
  • Nanoparticle catalytsts, catalytic activity, selectivity, and stability, strong metal-support interactions, CO2 utilization, biomass conversion, Plastic Up-cycling

ITEM VIEW & DOWNLOAD

Hydrogenation of benzene and toluene over size controlled Pt/SBA-15 catalysts: Elucidation of the Pt particle size effect on reaction kinetics

Cited 25 times inthomson ciCited 23 times inthomson ci
Title
Hydrogenation of benzene and toluene over size controlled Pt/SBA-15 catalysts: Elucidation of the Pt particle size effect on reaction kinetics
Author
Pushkarev, Vladimir V.An, KwangjinAlayoglu, SelimBeaumont, Simon K.Somorjai, Gabor A.
Keywords
Benzene hydrogenation; Compensation effect; Pt nanoparticles; Structural sensitivity
Issue Date
2012-08
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF CATALYSIS, v.292, no., pp.64 - 72
Abstract
Vapor-phase hydrogenation of benzene and toluene over a size-dependent (1.5-5.2 nm) series of Pt nanoparticles (NPs) encapsulated in polyvinylpyrrolidone (PVP) or polyamidoamine (PAMAM) dendrimer and supported in SBA-15 mesoporous silica was investigated at ambient pressure between 343 K and 398 K. Under these conditions, both reactions exhibit a moderate structure sensitivity evidenced by changes in their turnover rate (TOR), apparent activation energy (E-A), pre-exponential factor In(r(o)), and deactivation rate parameters with Pt particle size. For instance, the 2.4-3.1 nm Pt NPs showed the highest TOR for both reactions as compared to NPs of either smaller or larger sizes. Also, the E-A and In(r(o)) factor values were larger for smaller Pt particle sizes, and the rates of catalyst deactivation were more pronounced for catalysts with larger Pt particle sizes. However, the reaction orders on H-2 and hydrocarbon were independent of particle size. Published by Elsevier Inc.
URI
Go to Link
DOI
10.1016/j.jcat.2012.04.022
ISSN
0021-9517
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
JC 2012,292,64, Hydrogenation of benzene and toluene over size controlled Pt SBA-15 catalysts.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU