Effect of Cobalt Particle Size on Acetone Steam Reforming

Sun, Junming; Zhang, He; Yu, Ning; Davidson, Stephen; Wang, Yong

doi:10.1002/cctc.201500336

Title: Effect of Cobalt Particle Size on Acetone Steam Reforming

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Abstract

Carbon-supported cobalt nanoparticles with different particle sizes were synthesized and characterized by complementary characterization techniques such as X-ray diffraction, N-2 sorption, acetone temperature-programmed desorption, transmission electron microscopy, and CO chemisorption. Using acetone steam reforming reaction as a probe reaction, we revealed a volcano-shape curve of the intrinsic activity (turnover frequency of acetone) and the CO2 selectivity as a function of the cobalt particle size with the highest activity and selectivity observed at a particle size of approximately 12.8nm. Our results indicate that the overall performance of acetone steam reforming is related to a combination of particle-size-dependent acetone decomposition, water dissociation, and the oxidation state of the cobalt nanoparticles.

Authors:: Sun, Junming; Zhang, He; Yu, Ning; Davidson, Stephen; Wang, Yong

Publication Date:: Thu Jun 11 00:00:00 EDT 2015

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1274888

Report Number(s):: PNNL-SA-115391
Journal ID: ISSN 1867-3880; 47660; KC0302010

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: ChemCatChem

Additional Journal Information:: Journal Volume: 7; Journal Issue: 18; Journal ID: ISSN 1867-3880

Publisher:: ChemPubSoc Europe

Country of Publication:: United States

Language:: English

Subject:: carbon; cobalt; hydrogen; nanoparticles; renewable resources; Environmental Molecular Sciences Laboratory

Citation Formats


                    Sun, Junming, Zhang, He, Yu, Ning, Davidson, Stephen, and Wang, Yong. Effect of Cobalt Particle Size on Acetone Steam Reforming.  United States: N. p., 2015. 
        Web.  doi:10.1002/cctc.201500336.

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                    Sun, Junming, Zhang, He, Yu, Ning, Davidson, Stephen, & Wang, Yong. Effect of Cobalt Particle Size on Acetone Steam Reforming.  United States.  https://doi.org/10.1002/cctc.201500336

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                    Sun, Junming, Zhang, He, Yu, Ning, Davidson, Stephen, and Wang, Yong. 2015.  
        "Effect of Cobalt Particle Size on Acetone Steam Reforming".  United States.  https://doi.org/10.1002/cctc.201500336.

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@article{osti_1274888,

  title        = {Effect of Cobalt Particle Size on Acetone Steam Reforming},

  author       = {Sun, Junming and Zhang, He and Yu, Ning and Davidson, Stephen and Wang, Yong},

  abstractNote = {Carbon-supported cobalt nanoparticles with different particle sizes were synthesized and characterized by complementary characterization techniques such as X-ray diffraction, N-2 sorption, acetone temperature-programmed desorption, transmission electron microscopy, and CO chemisorption. Using acetone steam reforming reaction as a probe reaction, we revealed a volcano-shape curve of the intrinsic activity (turnover frequency of acetone) and the CO2 selectivity as a function of the cobalt particle size with the highest activity and selectivity observed at a particle size of approximately 12.8nm. Our results indicate that the overall performance of acetone steam reforming is related to a combination of particle-size-dependent acetone decomposition, water dissociation, and the oxidation state of the cobalt nanoparticles.},

  doi          = {10.1002/cctc.201500336},

  url          = {https://www.osti.gov/biblio/1274888},
  journal      = {ChemCatChem},

  issn         = {1867-3880},

  number       = 18,

  volume       = 7,

  place        = {United States},

  year         = {Thu Jun 11 00:00:00 EDT 2015},

  month        = {Thu Jun 11 00:00:00 EDT 2015}

}

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