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Title: Understanding the Active Sites of CO Hydrogenation on Pt–Co Catalysts Prepared Using Atomic Layer Deposition

The production of liquid fuels and industrial feedstocks from renewable carbon sources is an ongoing scientific challenge. By using atomic layer deposition together with conventional techniques, we synthesize Pt–Co bimetallic catalysts that show improvement for syngas conversion to alcohols. By combining reaction testing, X-ray diffraction, electron microscopy, and in situ infrared spectroscopy experiments, supported by density functional theory calculations, we uncover insights into how Pt modulates the selectivity of Co catalysts. The prepared Pt–Co catalysts demonstrate increased selectivity toward methanol and low molecular weight hydrocarbons as well as a modest increase in selectivity toward higher alcohols. The in situ infrared spectroscopic measurements suggest that these changes in selectivity result from an interplay between linear and bridging carbon monoxide configurations on the catalyst surface.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ; ORCiD logo [3]
  1. Stanford Univ., CA (United States). Dept. of Chemistry
  2. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  3. Stanford Univ., CA (United States). Dept. of Chemical Engineering
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  5. Stanford Univ., CA (United States). Stanford Nano Shared Facilities
Publication Date:
Grant/Contract Number:
DGE-114747; AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 122; Journal Issue: 4; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1457697

Singh, Joseph A., Yang, Nuoya, Liu, Xinyan, Tsai, Charlie, Stone, Kevin H., Johnson, Bart, Koh, Ai Leen, and Bent, Stacey F.. Understanding the Active Sites of CO Hydrogenation on Pt–Co Catalysts Prepared Using Atomic Layer Deposition. United States: N. p., Web. doi:10.1021/acs.jpcc.7b10541.
Singh, Joseph A., Yang, Nuoya, Liu, Xinyan, Tsai, Charlie, Stone, Kevin H., Johnson, Bart, Koh, Ai Leen, & Bent, Stacey F.. Understanding the Active Sites of CO Hydrogenation on Pt–Co Catalysts Prepared Using Atomic Layer Deposition. United States. doi:10.1021/acs.jpcc.7b10541.
Singh, Joseph A., Yang, Nuoya, Liu, Xinyan, Tsai, Charlie, Stone, Kevin H., Johnson, Bart, Koh, Ai Leen, and Bent, Stacey F.. 2017. "Understanding the Active Sites of CO Hydrogenation on Pt–Co Catalysts Prepared Using Atomic Layer Deposition". United States. doi:10.1021/acs.jpcc.7b10541.
@article{osti_1457697,
title = {Understanding the Active Sites of CO Hydrogenation on Pt–Co Catalysts Prepared Using Atomic Layer Deposition},
author = {Singh, Joseph A. and Yang, Nuoya and Liu, Xinyan and Tsai, Charlie and Stone, Kevin H. and Johnson, Bart and Koh, Ai Leen and Bent, Stacey F.},
abstractNote = {The production of liquid fuels and industrial feedstocks from renewable carbon sources is an ongoing scientific challenge. By using atomic layer deposition together with conventional techniques, we synthesize Pt–Co bimetallic catalysts that show improvement for syngas conversion to alcohols. By combining reaction testing, X-ray diffraction, electron microscopy, and in situ infrared spectroscopy experiments, supported by density functional theory calculations, we uncover insights into how Pt modulates the selectivity of Co catalysts. The prepared Pt–Co catalysts demonstrate increased selectivity toward methanol and low molecular weight hydrocarbons as well as a modest increase in selectivity toward higher alcohols. The in situ infrared spectroscopic measurements suggest that these changes in selectivity result from an interplay between linear and bridging carbon monoxide configurations on the catalyst surface.},
doi = {10.1021/acs.jpcc.7b10541},
journal = {Journal of Physical Chemistry. C},
number = 4,
volume = 122,
place = {United States},
year = {2017},
month = {12}
}