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Removal of CO by Water–Gas Shift Reaction over Bimetal CeO2 and Ni Nanoparticles Dispersed in Carbon Micro-nanofibers

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Abstract

The present study focuses on the removal of CO by the water–gas shift reaction over the bimetal CeO2 and Ni nanoparticles (NPs) dispersed in the multi-scale web of activated carbon micro/nanofibers (CNFs/ACF). The CNFs were grown on an ACF substrate, using catalytic chemical vapor deposition and acetylene as the carbon source. The Ni NPs had dual roles as the catalyst: (1) for decomposing acetylene and (2) for the oxidation of CO. The CeO2 dispersed in the ACFs provided necessary nascent oxygen for the oxidation. Approximately 80 % conversion of CO was achieved at 400 °C, using 2 % (v/v) CO in nitrogen. The high reaction rate [~0.75 µmol CO/g-s] on the prepared material was attributed to the catalytic Ni NPs, oxygen providing CeO2, surface functional groups-containing ACF, and active exposed edges of hexagon in the CNFs. The prepared bimetal containing CNF/ACF web is a potential catalyst for the effective removal of CO without requiring an external supply of O2 or a promoter.

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Acknowledgments

The authors thank Kynol, Inc. (Tokyo, Japan) for providing the ACF samples.

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Authors and Affiliations

  1. Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India

    Bhaskar Bhaduri & Nishith Verma

  2. Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India

    Nishith Verma

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  1. Bhaskar Bhaduri
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  2. Nishith Verma
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Correspondence to Nishith Verma.

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Bhaduri, B., Verma, N. Removal of CO by Water–Gas Shift Reaction over Bimetal CeO2 and Ni Nanoparticles Dispersed in Carbon Micro-nanofibers. Catal Lett 145, 1262–1271 (2015). https://doi.org/10.1007/s10562-015-1528-1

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  • DOI: https://doi.org/10.1007/s10562-015-1528-1

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