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Title: The behavior of inverse oxide/metal catalysts: CO oxidation and water-gas shift reactions over ZnO/Cu(111) surfaces

Abstract

There is a general desire to improve the configuration of industrial catalysts by taking advantage of the intrinsic properties of metal oxides. On an inverse oxide/metal catalyst, the reactants can interact with defect sites of the oxide nanoparticles, metal sites, and the metal-oxide interface. We have investigated the oxidation of carbon monoxide (CO + 0.5O2 → CO2) and the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series of ZnO/Cu(111) surfaces prepared in different ways. Oxidation of a Zn-Cu(111) alloys with O2 at 460 K produces ZnO/CuOx/Cu(111) systems where the size of the ZnO islands is in the range of 5–20 nm. These systems are highly active for the oxidation of CO at moderate temperatures (400–500 K) but have problems of stability when performing the water-gas shift at temperatures above 550 K. ZnO/CuOx/Cu(111) surfaces prepared by vapor deposition of Zn at 600 K in O2 exhibit islands of ZnO which are extremely large (400–500 nm) and contain a minimum of 3–4 layers of the oxide. These large islands of ZnO are not as chemically active as the small ZnO clusters yet they have high stability and produce ZnO-Cu interfaces which are efficient as catalysts formore » the water-gas shift reaction at 550–625 K.« less

Authors:
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [3]; ORCiD logo [1];  [3];  [2]; ORCiD logo [1];  [5]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry
  2. Central Univ. of Venezuela, Caracas (Venezuela)
  3. Stony Brook Univ., NY (United States). Dept. of Chemistry
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry; Tianjin Univ. (China). Tianjin Collaborative Innovation Center of Chemical Science and Engineering. School of Chemical Engineering and Technology
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry; Stony Brook Univ., NY (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1504405
Alternate Identifier(s):
OSTI ID: 1776227
Report Number(s):
BNL-211479-2019-JAAM
Journal ID: ISSN 0039-6028
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Surface Science
Additional Journal Information:
Journal Volume: 681; Journal ID: ISSN 0039-6028
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; zinc oxide; copper; CO oxidation; water-gas shift reaction; inverse oxide/metal catalysts; surface reactions

Citation Formats

Mahapatra, Mausumi, Gutiérrez, Ramón A., Kang, Jindong, Rui, Ning, Hamlyn, Rebecca, Liu, Zongyuan, Orozco, Ivan, Ramírez, Pedro J., Senanayake, Sanjaya D., and Rodriguez, José A. The behavior of inverse oxide/metal catalysts: CO oxidation and water-gas shift reactions over ZnO/Cu(111) surfaces. United States: N. p., 2018. Web. doi:10.1016/j.susc.2018.09.008.
Mahapatra, Mausumi, Gutiérrez, Ramón A., Kang, Jindong, Rui, Ning, Hamlyn, Rebecca, Liu, Zongyuan, Orozco, Ivan, Ramírez, Pedro J., Senanayake, Sanjaya D., & Rodriguez, José A. The behavior of inverse oxide/metal catalysts: CO oxidation and water-gas shift reactions over ZnO/Cu(111) surfaces. United States. https://doi.org/10.1016/j.susc.2018.09.008
Mahapatra, Mausumi, Gutiérrez, Ramón A., Kang, Jindong, Rui, Ning, Hamlyn, Rebecca, Liu, Zongyuan, Orozco, Ivan, Ramírez, Pedro J., Senanayake, Sanjaya D., and Rodriguez, José A. Sat . "The behavior of inverse oxide/metal catalysts: CO oxidation and water-gas shift reactions over ZnO/Cu(111) surfaces". United States. https://doi.org/10.1016/j.susc.2018.09.008. https://www.osti.gov/servlets/purl/1504405.
@article{osti_1504405,
title = {The behavior of inverse oxide/metal catalysts: CO oxidation and water-gas shift reactions over ZnO/Cu(111) surfaces},
author = {Mahapatra, Mausumi and Gutiérrez, Ramón A. and Kang, Jindong and Rui, Ning and Hamlyn, Rebecca and Liu, Zongyuan and Orozco, Ivan and Ramírez, Pedro J. and Senanayake, Sanjaya D. and Rodriguez, José A.},
abstractNote = {There is a general desire to improve the configuration of industrial catalysts by taking advantage of the intrinsic properties of metal oxides. On an inverse oxide/metal catalyst, the reactants can interact with defect sites of the oxide nanoparticles, metal sites, and the metal-oxide interface. We have investigated the oxidation of carbon monoxide (CO + 0.5O2 → CO2) and the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series of ZnO/Cu(111) surfaces prepared in different ways. Oxidation of a Zn-Cu(111) alloys with O2 at 460 K produces ZnO/CuOx/Cu(111) systems where the size of the ZnO islands is in the range of 5–20 nm. These systems are highly active for the oxidation of CO at moderate temperatures (400–500 K) but have problems of stability when performing the water-gas shift at temperatures above 550 K. ZnO/CuOx/Cu(111) surfaces prepared by vapor deposition of Zn at 600 K in O2 exhibit islands of ZnO which are extremely large (400–500 nm) and contain a minimum of 3–4 layers of the oxide. These large islands of ZnO are not as chemically active as the small ZnO clusters yet they have high stability and produce ZnO-Cu interfaces which are efficient as catalysts for the water-gas shift reaction at 550–625 K.},
doi = {10.1016/j.susc.2018.09.008},
journal = {Surface Science},
number = ,
volume = 681,
place = {United States},
year = {Sat Sep 15 00:00:00 EDT 2018},
month = {Sat Sep 15 00:00:00 EDT 2018}
}

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Works referencing / citing this record:

Hydroxylation of ZnO/Cu(1 1 1) inverse catalysts under ambient water vapor and the water–gas shift reaction
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Growth and structural studies of In/Au(111) alloys and InO x /Au(111) inverse oxide/metal model catalysts
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Large‐Scale Synthesis of Strain‐Tunable Semiconducting Antimonene on Copper Oxide
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