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Title: Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects

Abstract

Molybdenum phosphide (MoP) catalysts have recently gained attention because of their robust methanol synthesis activity from CO/CO 2. Synthesis strategies are used to steer MoP selectivity toward higher alcohols by investigating the promotion effects of alkali (K) and CO‐dissociating (Co, Ni) and non‐CO‐dissociating (Pd) metals. Systematic research with transmission electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and X‐ray absorption spectroscopy (XAS) showed that critical parameters governing the activity of MoP catalysts are P/Mo ratio and K loading, both facilitating MoP formation. The kinetic studies of mesoporous silica‐supported MoP catalysts show a twofold role of K, which also acts as an electronic promoter by increasing the total alcohol selectivity and chain length. Palladium (Pd) increases CO conversion, but decreases alcohol chain length. The use of mesoporous carbon (MC) support has the most significant effect on catalyst performance and yields a KMoP/MC catalyst that ranks among the state‐of‐the‐art in terms of selectivity to higher alcohols.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2]
  1. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Utrecht (Netherlands)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
1547286
Alternate Identifier(s):
OSTI ID: 1506724
Grant/Contract Number:  
AC02-76SF00515; ECCS-1542152
Resource Type:
Accepted Manuscript
Journal Name:
Energy Technology
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Journal ID: ISSN 2194-4288
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; higher alcohol synthesis; molybdenum phosphide; promoter effects; support effects; syngas conversion

Citation Formats

ten Have, Iris C., Valle, Eduardo, Gallo, Alessandro, Snider, Jonathan L., Duyar, Melis S., and Jaramillo, Thomas F. Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects. United States: N. p., 2019. Web. doi:10.1002/ente.201801102.
ten Have, Iris C., Valle, Eduardo, Gallo, Alessandro, Snider, Jonathan L., Duyar, Melis S., & Jaramillo, Thomas F. Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects. United States. doi:10.1002/ente.201801102.
ten Have, Iris C., Valle, Eduardo, Gallo, Alessandro, Snider, Jonathan L., Duyar, Melis S., and Jaramillo, Thomas F. Tue . "Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects". United States. doi:10.1002/ente.201801102. https://www.osti.gov/servlets/purl/1547286.
@article{osti_1547286,
title = {Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects},
author = {ten Have, Iris C. and Valle, Eduardo and Gallo, Alessandro and Snider, Jonathan L. and Duyar, Melis S. and Jaramillo, Thomas F.},
abstractNote = {Molybdenum phosphide (MoP) catalysts have recently gained attention because of their robust methanol synthesis activity from CO/CO2. Synthesis strategies are used to steer MoP selectivity toward higher alcohols by investigating the promotion effects of alkali (K) and CO‐dissociating (Co, Ni) and non‐CO‐dissociating (Pd) metals. Systematic research with transmission electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and X‐ray absorption spectroscopy (XAS) showed that critical parameters governing the activity of MoP catalysts are P/Mo ratio and K loading, both facilitating MoP formation. The kinetic studies of mesoporous silica‐supported MoP catalysts show a twofold role of K, which also acts as an electronic promoter by increasing the total alcohol selectivity and chain length. Palladium (Pd) increases CO conversion, but decreases alcohol chain length. The use of mesoporous carbon (MC) support has the most significant effect on catalyst performance and yields a KMoP/MC catalyst that ranks among the state‐of‐the‐art in terms of selectivity to higher alcohols.},
doi = {10.1002/ente.201801102},
journal = {Energy Technology},
number = 5,
volume = 7,
place = {United States},
year = {2019},
month = {2}
}

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