NDLI: Recovery of Pt Surfaces for Ethylene Hydrogenation-Based Active Site Determination

Content Provider	Springer Nature Link
Author	Sapi, Andras Thompson, Chris Wang, Hailiang Michalak, William D. Ralston, Walter T. Alayoglu, Selim Somorjai, Gabor A.
Copyright Year	2014
Abstract	The effect of pretreatment (O2 or H2) and catalyst history was investigated through room temperature ethylene hydrogenation reaction over several types of platinum based nanoparticle systems: 1.6 nm Pt/TTAB, 4.1 nm Pt/PVP (with and without UV treatment), 4.1 nm Pt with a silica shell, and e-beam evaporated Pt thin films were tested. The H2 pretreatment resulted in the absence of activity. However, Pt active sites for the ethylene hydrogenation reaction were recovered after an O2 pretreatment irrespective of the catalyst history, regardless of the particle size nor the presence, absence or type of capping agent. The calculation of the average TOF resulted in 10.13 ± 3.27. This value correlates well with data from the literature. Thus, the ethylene hydrogenation reaction can be used to determine available sites of Pt catalysts if the reaction is following an O2 pretreatment. .
Starting Page	1151
Ending Page	1158
Page Count	8
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	144
Issue Number	7
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2014-05-25
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Heterogeneous catalysis Ethylene hydrogenation Platinum Catalyst pretreatment Catalysis Industrial Chemistry/Chemical Engineering Organometallic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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