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Title: Identification of active sites on supported metal catalysts with carbon nanotube hydrogen highways

Abstract

Catalysts consisting of metal particles supported on reducible oxides exhibit promising activity and selectivity for a variety of current and emerging industrial processes. Enhanced catalytic activity can arise from direct contact between the support and the metal or from metal-induced promoter effects on the oxide. Discovering the source of enhanced catalytic activity and selectivity is challenging, with conflicting arguments often presented based on indirect evidence. Here, we separate the metal from the support by a controlled distance while maintaining the ability to promote defects via the use of carbon nanotube hydrogen highways. As illustrative cases, we use this approach to show that the selective transformation of furfural to methylfuran over Pd/TiO2 occurs at the Pd-TiO2 interface while anisole conversion to phenol and cresol over Cu/TiO2 is facilitated by exposed Ti3+ cations on the support. This approach can be used to clarify many conflicting arguments in the literature.

Authors:
; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
1470788
Alternate Identifier(s):
OSTI ID: 1601877
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Name: Nature Communications Journal Volume: 9 Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Briggs, Nicholas M., Barrett, Lawrence, Wegener, Evan C., Herrera, Leidy V., Gomez, Laura A., Miller, Jeffrey T., and Crossley, Steven P. Identification of active sites on supported metal catalysts with carbon nanotube hydrogen highways. United Kingdom: N. p., 2018. Web. doi:10.1038/s41467-018-06100-9.
Briggs, Nicholas M., Barrett, Lawrence, Wegener, Evan C., Herrera, Leidy V., Gomez, Laura A., Miller, Jeffrey T., & Crossley, Steven P. Identification of active sites on supported metal catalysts with carbon nanotube hydrogen highways. United Kingdom. https://doi.org/10.1038/s41467-018-06100-9
Briggs, Nicholas M., Barrett, Lawrence, Wegener, Evan C., Herrera, Leidy V., Gomez, Laura A., Miller, Jeffrey T., and Crossley, Steven P. Thu . "Identification of active sites on supported metal catalysts with carbon nanotube hydrogen highways". United Kingdom. https://doi.org/10.1038/s41467-018-06100-9.
@article{osti_1470788,
title = {Identification of active sites on supported metal catalysts with carbon nanotube hydrogen highways},
author = {Briggs, Nicholas M. and Barrett, Lawrence and Wegener, Evan C. and Herrera, Leidy V. and Gomez, Laura A. and Miller, Jeffrey T. and Crossley, Steven P.},
abstractNote = {Catalysts consisting of metal particles supported on reducible oxides exhibit promising activity and selectivity for a variety of current and emerging industrial processes. Enhanced catalytic activity can arise from direct contact between the support and the metal or from metal-induced promoter effects on the oxide. Discovering the source of enhanced catalytic activity and selectivity is challenging, with conflicting arguments often presented based on indirect evidence. Here, we separate the metal from the support by a controlled distance while maintaining the ability to promote defects via the use of carbon nanotube hydrogen highways. As illustrative cases, we use this approach to show that the selective transformation of furfural to methylfuran over Pd/TiO2 occurs at the Pd-TiO2 interface while anisole conversion to phenol and cresol over Cu/TiO2 is facilitated by exposed Ti3+ cations on the support. This approach can be used to clarify many conflicting arguments in the literature.},
doi = {10.1038/s41467-018-06100-9},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United Kingdom},
year = {Thu Sep 20 00:00:00 EDT 2018},
month = {Thu Sep 20 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1038/s41467-018-06100-9

Citation Metrics:
Cited by: 37 works
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