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Title: Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous-phase

Abstract

Hydrogenation of phenol and of the benzaldehyde carbonyl group catalyzed by Pt are structure sensitive in aqueous phase. The intrinsic reaction rates are directly proportional to the average size of the Pt particles. This trend is indifferent of the genesis of the reduction equivalents, i.e., dissociation of H2 or proton reduction under cathodic potential. It is concluded that the structure sensitivity is caused by the ensemble size sensitivity of the adsorption of the aromatic molecules, which is favored on (100) and (111) surfaces of larger particles. For electrocatalytic reduction, this structure sensitivity implies that hydrogen evolution increases in rate relative hydrogen addition to reacting substrates as the size of Pt particles decreases.

Authors:
 [1];  [2];  [1];  [1];  [3];  [2];  [1];  [4]
  1. Institute for Integrated CatalysisPacific Northwest National Laboratory Richland WA-99352 USA
  2. Department of Chemistry and Catalysis Research CenterTechnische Universität München Garching 85747 Germany
  3. Electrochemistry LaboratoryPaul Scherrer Institute Villegen CH-5232 Switzerland
  4. Institute for Integrated CatalysisPacific Northwest National Laboratory Richland WA-99352 USA; Department of Chemistry and Catalysis Research CenterTechnische Universität München Garching 85747 Germany
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1492714
Report Number(s):
PNNL-SA-138838
Journal ID: ISSN 1867-3880
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
ChemCatChem
Additional Journal Information:
Journal Volume: 11; Journal Issue: 1; Journal ID: ISSN 1867-3880
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English

Citation Formats

Sanyal, Udishnu, Song, Yang, Singh, Nirala, Fulton, John L., Herranz, Juan, Jentys, Andreas, Gutiérrez, Oliver Y., and Lercher, Johannes A. Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous-phase. United States: N. p., 2018. Web. doi:10.1002/cctc.201801344.
Sanyal, Udishnu, Song, Yang, Singh, Nirala, Fulton, John L., Herranz, Juan, Jentys, Andreas, Gutiérrez, Oliver Y., & Lercher, Johannes A. Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous-phase. United States. doi:10.1002/cctc.201801344.
Sanyal, Udishnu, Song, Yang, Singh, Nirala, Fulton, John L., Herranz, Juan, Jentys, Andreas, Gutiérrez, Oliver Y., and Lercher, Johannes A. Mon . "Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous-phase". United States. doi:10.1002/cctc.201801344.
@article{osti_1492714,
title = {Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous-phase},
author = {Sanyal, Udishnu and Song, Yang and Singh, Nirala and Fulton, John L. and Herranz, Juan and Jentys, Andreas and Gutiérrez, Oliver Y. and Lercher, Johannes A.},
abstractNote = {Hydrogenation of phenol and of the benzaldehyde carbonyl group catalyzed by Pt are structure sensitive in aqueous phase. The intrinsic reaction rates are directly proportional to the average size of the Pt particles. This trend is indifferent of the genesis of the reduction equivalents, i.e., dissociation of H2 or proton reduction under cathodic potential. It is concluded that the structure sensitivity is caused by the ensemble size sensitivity of the adsorption of the aromatic molecules, which is favored on (100) and (111) surfaces of larger particles. For electrocatalytic reduction, this structure sensitivity implies that hydrogen evolution increases in rate relative hydrogen addition to reacting substrates as the size of Pt particles decreases.},
doi = {10.1002/cctc.201801344},
journal = {ChemCatChem},
issn = {1867-3880},
number = 1,
volume = 11,
place = {United States},
year = {2018},
month = {11}
}