Ambient pressure synthesis of ammonia using a microwave reactor

Wildfire, Christina; Abdelsayed, Victor; Shekhawat, Dushyant; Spencer, Michael J.

doi:10.1016/j.catcom.2018.07.010

Title: Ambient pressure synthesis of ammonia using a microwave reactor

Abstract

Ammonia synthesis processes that can operate at low temperatures and pressure and have ability for small-scale distributed production are of interest. Microwave assisted synthesis has shown improvements in kinetics and does not have economy of scale limitations of the Haber-Bosch process. A microwave reactor was used to produce ammonia at temperatures from 300 to 500 °C. Three catalyst systems were compared: commercial Fe catalyst, and supported Ru/Al₂O₃, and Fe/Al₂O₃ catalysts. Furthermore, the ammonia production of the dispersed catalysts was significantly higher than the commercial catalyst with maximum production of 128 μmol/g/h at 300 °C. This increase in production is attributed to an optimal electron movement under the microwave field.

Authors:

Wildfire, Christina ^[1]; Abdelsayed, Victor ^[2]; Shekhawat, Dushyant ^[3]; Spencer, Michael J. ^[2]

National Energy Technology Lab. (NETL), Morgantown, WV (United States); Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Morgantown, WV (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States)

Publication Date:: Fri Jul 20 00:00:00 EDT 2018

Research Org.:: National Energy Technology Lab. (NETL), Morgantown, WV (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1482982

Alternate Identifier(s):: OSTI ID: 1548090

Resource Type:: Accepted Manuscript

Journal Name:: Catalysis Communications

Additional Journal Information:: Journal Volume: 115; Journal Issue: C; Journal ID: ISSN 1566-7367

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Ammonia synthesis; Microwave; Ru catalyst; Iron catalyst

Citation Formats


                    Wildfire, Christina, Abdelsayed, Victor, Shekhawat, Dushyant, and Spencer, Michael J. Ambient pressure synthesis of ammonia using a microwave reactor.  United States: N. p., 2018. 
Web.  doi:10.1016/j.catcom.2018.07.010.

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                    Wildfire, Christina, Abdelsayed, Victor, Shekhawat, Dushyant, & Spencer, Michael J. Ambient pressure synthesis of ammonia using a microwave reactor.  United States.  https://doi.org/10.1016/j.catcom.2018.07.010

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                    Wildfire, Christina, Abdelsayed, Victor, Shekhawat, Dushyant, and Spencer, Michael J. Fri .  
"Ambient pressure synthesis of ammonia using a microwave reactor".  United States.  https://doi.org/10.1016/j.catcom.2018.07.010.  https://www.osti.gov/servlets/purl/1482982.

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@article{osti_1482982,

  title        = {Ambient pressure synthesis of ammonia using a microwave reactor},

  author       = {Wildfire, Christina and Abdelsayed, Victor and Shekhawat, Dushyant and Spencer, Michael J.},

  abstractNote = {Ammonia synthesis processes that can operate at low temperatures and pressure and have ability for small-scale distributed production are of interest. Microwave assisted synthesis has shown improvements in kinetics and does not have economy of scale limitations of the Haber-Bosch process. A microwave reactor was used to produce ammonia at temperatures from 300 to 500 °C. Three catalyst systems were compared: commercial Fe catalyst, and supported Ru/Al2O3, and Fe/Al2O3 catalysts. Furthermore, the ammonia production of the dispersed catalysts was significantly higher than the commercial catalyst with maximum production of 128 μmol/g/h at 300 °C. This increase in production is attributed to an optimal electron movement under the microwave field.},

  doi          = {10.1016/j.catcom.2018.07.010},

  journal      = {Catalysis Communications},

  number       = C,

  volume       = 115,

  place        = {United States},

  year         = {Fri Jul 20 00:00:00 EDT 2018},

  month        = {Fri Jul 20 00:00:00 EDT 2018}

}

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https://doi.org/10.1016/j.catcom.2018.07.010

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Cited by: 20 works

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Figures / Tables:

Figure 1: Schematic of flow-through microwave reactor. Powder placed within the fixed bed region and held in place with quartz wool.

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