Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”

Kattel, Shyam; Ramírez, Pedro J.; Chen, Jingguang G.; Rodriguez, José A.; Liu, Ping

doi:10.1126/science.aan8210

Title: Response to Comment on “Active sites for CO₂ hydrogenation to methanol on Cu/ZnO catalysts”

Abstract

In their Comment on our recent paper, Nakamura et al. argue that our x-ray photoelectron spectroscopy (XPS) analysis was affected by the presence of formate species on the catalyst surface. This argument is not valid because the reactant gases were evacuated at temperatures from 525 to 575 kelvin, conditions under which formate is not stable on the catalyst surface. An analysis of the XPS results obtained after exposing zinc oxide/copper (111) [ZnO/Cu(111)] surfaces to hydrogen (H₂) and mixtures of carbon dioxide (CO₂)/H₂ show an absence of carbon (C) 1s signal, no asymmetries in the oxygen (O) 1s peak, and a Zn:O intensity close to 1:1. Thus and finally, the most active phase of these catalysts contained a ZnO-Cu interface.

Authors:

^[1];

^[2];

^[3];

^[4];

^[4]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Central Univ. of Venezuela, Caracas (Venezuela)
Brookhaven National Lab. (BNL), Upton, NY (United States); Columbia Univ., New York, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)

Publication Date:: Fri Sep 01 00:00:00 EDT 2017

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1392266

Report Number(s):: BNL-114318-2017-JA
Journal ID: ISSN 0036-8075; R&D Project: CO040; KC0302010

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Science

Additional Journal Information:: Journal Volume: 357; Journal Issue: 6354; Journal ID: ISSN 0036-8075

Publisher:: AAAS

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Kattel, Shyam, Ramírez, Pedro J., Chen, Jingguang G., Rodriguez, José A., and Liu, Ping. Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”.  United States: N. p., 2017. 
Web.  doi:10.1126/science.aan8210.

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                    Kattel, Shyam, Ramírez, Pedro J., Chen, Jingguang G., Rodriguez, José A., & Liu, Ping. Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”.  United States.  https://doi.org/10.1126/science.aan8210

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                    Kattel, Shyam, Ramírez, Pedro J., Chen, Jingguang G., Rodriguez, José A., and Liu, Ping. Fri .  
"Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”".  United States.  https://doi.org/10.1126/science.aan8210.  https://www.osti.gov/servlets/purl/1392266.

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@article{osti_1392266,

  title        = {Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”},

  author       = {Kattel, Shyam and Ramírez, Pedro J. and Chen, Jingguang G. and Rodriguez, José A. and Liu, Ping},

  abstractNote = {In their Comment on our recent paper, Nakamura et al. argue that our x-ray photoelectron spectroscopy (XPS) analysis was affected by the presence of formate species on the catalyst surface. This argument is not valid because the reactant gases were evacuated at temperatures from 525 to 575 kelvin, conditions under which formate is not stable on the catalyst surface. An analysis of the XPS results obtained after exposing zinc oxide/copper (111) [ZnO/Cu(111)] surfaces to hydrogen (H2) and mixtures of carbon dioxide (CO2)/H2 show an absence of carbon (C) 1s signal, no asymmetries in the oxygen (O) 1s peak, and a Zn:O intensity close to 1:1. Thus and finally, the most active phase of these catalysts contained a ZnO-Cu interface.},

  doi          = {10.1126/science.aan8210},

  journal      = {Science},

  number       = 6354,

  volume       = 357,

  place        = {United States},

  year         = {Fri Sep 01 00:00:00 EDT 2017},

  month        = {Fri Sep 01 00:00:00 EDT 2017}

}

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Active sites for CO ₂ hydrogenation to methanol on Cu/ZnO catalysts
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Formation of a ZnO Overlayer in Industrial Cu/ZnO/Al ₂ O ₃ Catalysts Induced by Strong Metal-Support Interactions
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Angewandte Chemie, Vol. 127, Issue 15
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journal, March 2016

Martin, Oliver; Martín, Antonio J.; Mondelli, Cecilia
Angewandte Chemie, Vol. 128, Issue 21
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Title: Response to Comment on “Active sites for CO2 hydrogenation to methanol on Cu/ZnO catalysts”

Abstract

Citation Formats

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Title: Response to Comment on “Active sites for CO₂ hydrogenation to methanol on Cu/ZnO catalysts”

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Hydrogenation of CO ₂ to Methanol on CeO _x /Cu(111) and ZnO/Cu(111) Catalysts: Role of the Metal–Oxide Interface and Importance of Ce ³⁺ Sites
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