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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/Al 2O 3, and Fe/Al 2O 3 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:
 [1];  [2];  [3];  [2]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Org.:
USDOE
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.
Wildfire, Christina, Abdelsayed, Victor, Shekhawat, Dushyant, & Spencer, Michael J. Ambient pressure synthesis of ammonia using a microwave reactor. United States. doi:10.1016/j.catcom.2018.07.010.
Wildfire, Christina, Abdelsayed, Victor, Shekhawat, Dushyant, and Spencer, Michael J. Fri . "Ambient pressure synthesis of ammonia using a microwave reactor". United States. doi:10.1016/j.catcom.2018.07.010. https://www.osti.gov/servlets/purl/1482982.
@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 = {2018},
month = {7}
}

Journal Article:
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