Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g)

Luke J. Venstrom; Jane H Davidson

doi:10.1115/ES2012-91136

Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g)

Luke J. Venstrom
, Jane H Davidson

Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

The heterogeneous oxidation of Zn(g) is considered as an improved approach to the production of H₂ and CO in the two-step Zn/ZnO solar thermochemical cycle. The rate of Zn(g) oxidation by H₂O and CO ₂ is measured gravimetrically in a quartz tubular flow reactor for temperatures between 800 and 1150 K, Zn(g) concentrations up to 36 mol%, and H₂O/CO₂ concentrations up to 45 mol%. The rate of the heterogeneous oxidation of Zn(g) by both H₂O and CO₂ is on the order of 10^-8-10^-5 mol cm^-2 s ^-1. For similar oxidizing conditions, H₂O oxidizes Zn(g) three times as fast as CO₂, indicative of a lower heterogeneous oxidation activation energy in the H₂O system. Less than one second is required to convert more than 85% of Zn to ZnO for all temperatures in both the H₂O and CO₂ reacting systems.

Original language	English (US)
Pages	1101-1108
Number of pages	8
DOIs	https://doi.org/10.1115/ES2012-91136
State	Published - 2012
Event	ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology - San Diego, CA, United States Duration: Jul 23 2012 → Jul 26 2012

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Other	ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology
Country/Territory	United States
City	San Diego, CA
Period	7/23/12 → 7/26/12

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10.1115/ES2012-91136

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Venstrom, L. J., & Davidson, J. H. (2012). Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g). 1101-1108. Paper presented at ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology, San Diego, CA, United States. https://doi.org/10.1115/ES2012-91136

Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g). / Venstrom, Luke J.; Davidson, Jane H.
2012. 1101-1108 Paper presented at ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology, San Diego, CA, United States.

Research output: Contribution to conference › Paper › peer-review

Venstrom, LJ & Davidson, JH 2012, 'Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g)', Paper presented at ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology, San Diego, CA, United States, 7/23/12 - 7/26/12 pp. 1101-1108. https://doi.org/10.1115/ES2012-91136

Venstrom LJ, Davidson JH. Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g). 2012. Paper presented at ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology, San Diego, CA, United States. doi: 10.1115/ES2012-91136

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abstract = "The heterogeneous oxidation of Zn(g) is considered as an improved approach to the production of H2 and CO in the two-step Zn/ZnO solar thermochemical cycle. The rate of Zn(g) oxidation by H2O and CO 2 is measured gravimetrically in a quartz tubular flow reactor for temperatures between 800 and 1150 K, Zn(g) concentrations up to 36 mol\%, and H2O/CO2 concentrations up to 45 mol\%. The rate of the heterogeneous oxidation of Zn(g) by both H2O and CO2 is on the order of 10-8-10-5 mol cm-2 s -1. For similar oxidizing conditions, H2O oxidizes Zn(g) three times as fast as CO2, indicative of a lower heterogeneous oxidation activation energy in the H2O system. Less than one second is required to convert more than 85\% of Zn to ZnO for all temperatures in both the H2O and CO2 reacting systems.",

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AB - The heterogeneous oxidation of Zn(g) is considered as an improved approach to the production of H2 and CO in the two-step Zn/ZnO solar thermochemical cycle. The rate of Zn(g) oxidation by H2O and CO 2 is measured gravimetrically in a quartz tubular flow reactor for temperatures between 800 and 1150 K, Zn(g) concentrations up to 36 mol%, and H2O/CO2 concentrations up to 45 mol%. The rate of the heterogeneous oxidation of Zn(g) by both H2O and CO2 is on the order of 10-8-10-5 mol cm-2 s -1. For similar oxidizing conditions, H2O oxidizes Zn(g) three times as fast as CO2, indicative of a lower heterogeneous oxidation activation energy in the H2O system. Less than one second is required to convert more than 85% of Zn to ZnO for all temperatures in both the H2O and CO2 reacting systems.

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Rapid production of hydrogen and carbon monoxide via the heterogeneous oxidation of Zn(g)

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