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Title: Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis

Abstract

We present that in heterogeneous catalysis, hydrides on the surface or in the bulk play a critical role as either active components or reaction intermediates in many hydrogen-involving reactions, but characterization of the nature and structure of these hydride species remains challenging. Neutron scattering, which is extremely sensitive to light elements, such as hydrogen, has shown great potential in meeting this challenge. In this Minireview, recent advances in neutron studies of hydride species, mainly over the two most typical classes of catalysts—metals and oxides—are surveyed. Findings on catalysts outside these categories are raised if they are considered to be relevant for contextualization in the present Minireview. The adsorption, dissociation, spillover, and reactivity of hydrogen, especially hydride species over supported metal and oxide catalysts, have been successfully investigated, mostly by means of neutron vibrational spectroscopy. Insights from these neutron studies, which are otherwise not possible with other techniques, shed light on the interaction mechanism of hydrogen with solid surfaces and reaction mechanisms in which hydrogen is involved. Lastly, future research challenges on neutron scattering studies of hydrides, as well as catalysis in general, are also highlighted, and more operando-type neutron studies need be conducted to advance the field.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division; USDOE
OSTI Identifier:
1489564
Alternate Identifier(s):
OSTI ID: 1483335
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ChemSusChem
Additional Journal Information:
Journal Name: ChemSusChem; Journal ID: ISSN 1864-5631
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; heterogeneous catalysis; hydrides; neutron scattering; supported catalysts; transition metals

Citation Formats

Polo Garzon, Felipe, Luo, Si, Cheng, Yongqiang, Page, Katharine L., Ramirez Cuesta, Anibal, Britt, Phillip F., and Wu, Zili. Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis. United States: N. p., 2018. Web. doi:10.1002/cssc.201801890.
Polo Garzon, Felipe, Luo, Si, Cheng, Yongqiang, Page, Katharine L., Ramirez Cuesta, Anibal, Britt, Phillip F., & Wu, Zili. Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis. United States. doi:10.1002/cssc.201801890.
Polo Garzon, Felipe, Luo, Si, Cheng, Yongqiang, Page, Katharine L., Ramirez Cuesta, Anibal, Britt, Phillip F., and Wu, Zili. Mon . "Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis". United States. doi:10.1002/cssc.201801890.
@article{osti_1489564,
title = {Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis},
author = {Polo Garzon, Felipe and Luo, Si and Cheng, Yongqiang and Page, Katharine L. and Ramirez Cuesta, Anibal and Britt, Phillip F. and Wu, Zili},
abstractNote = {We present that in heterogeneous catalysis, hydrides on the surface or in the bulk play a critical role as either active components or reaction intermediates in many hydrogen-involving reactions, but characterization of the nature and structure of these hydride species remains challenging. Neutron scattering, which is extremely sensitive to light elements, such as hydrogen, has shown great potential in meeting this challenge. In this Minireview, recent advances in neutron studies of hydride species, mainly over the two most typical classes of catalysts—metals and oxides—are surveyed. Findings on catalysts outside these categories are raised if they are considered to be relevant for contextualization in the present Minireview. The adsorption, dissociation, spillover, and reactivity of hydrogen, especially hydride species over supported metal and oxide catalysts, have been successfully investigated, mostly by means of neutron vibrational spectroscopy. Insights from these neutron studies, which are otherwise not possible with other techniques, shed light on the interaction mechanism of hydrogen with solid surfaces and reaction mechanisms in which hydrogen is involved. Lastly, future research challenges on neutron scattering studies of hydrides, as well as catalysis in general, are also highlighted, and more operando-type neutron studies need be conducted to advance the field.},
doi = {10.1002/cssc.201801890},
journal = {ChemSusChem},
issn = {1864-5631},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

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Works referenced in this record:

The Hydride Anion in an Extended Transition Metal Oxide Array: LaSrCoO3H0.7
journal, March 2002