Ammonia Oxidation at High Pressure and Intermediate Temperatures Metadata

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Title

  • Main Title Ammonia Oxidation at High Pressure and Intermediate Temperatures

Creator

  • Author: Song, Yu
    Creator Type: Personal
    Creator Info: Technical University of Denmark; Huazhong University of Science and Technology
  • Author: Hashemi, Hamid
    Creator Type: Personal
    Creator Info: Technical University of Denmark
  • Author: Christensen, Jakob Munkholt
    Creator Type: Personal
    Creator Info: Technical University of Denmark
  • Author: Zou, Chun
    Creator Type: Personal
    Creator Info: Huazhong University of Science and Technology
  • Author: Marshall, Paul
    Creator Type: Personal
    Creator Info: University of North Texas
  • Author: Glarborg, Peter
    Creator Type: Personal
    Creator Info: University of North Texas

Publisher

  • Name: Elsevier Science Ltd.
    Place of Publication: Amsterdam, The Netherlands

Date

  • Creation: 2016-05-10

Language

  • English

Description

  • Content Description: This article describes ammonia oxidation experiments conducted at high pressure (30 bar and 100 bar) under oxidizing and stoichiometric conditions, respectively, and temperatures ranging from 450 to 925 K.
  • Physical Description: 8 p.

Subject

  • Keyword: NH3 oxidation
  • Keyword: high pressure
  • Keyword: flow reactor

Source

  • Journal: Fuel, 181, Elsevier, January 1, 2016, pp. 1-8

Citation

  • Publication Title: Fuel
  • Volume: 181
  • Page Start: 358
  • Page End: 365
  • Peer Reviewed: True

Collection

  • Name: UNT Scholarly Works
    Code: UNTSW

Institution

  • Name: UNT College of Arts and Sciences
    Code: UNTCAS

Rights

  • Rights Access: public
  • Rights Statement: © 2016 Elsevier Ltd. All rights reserved

Resource Type

  • Article

Format

  • Text

Identifier

  • DOI: 10.1016/j.fuel.2016.04.100
  • Archival Resource Key: ark:/67531/metadc991012

Degree

  • Academic Department: Chemistry

Note

  • Display Note: Abstract: Ammonia oxidation experiments were conducted at high pressure (30 bar and 100 bar) under oxidizing and stoichiometric conditions, respectively, and temperatures ranging from 450 to 925 K. The oxidation of ammonia was slow under stoichiometric conditions in the temperature range investigated. Under oxidizing conditions the onset temperature for reaction was 850–875 K at 30 bar, while at 100 bar it was about 800 K, with complete consumption of NH3 at 875 K. The products of reaction were N2 and N2O, while NO and NO2 concentrations were below the detection limit even under oxidizing conditions. The data were interpreted in terms of a detailed chemical kinetic model. The rate constant for the reaction of the important intermediate H2NO with O2 was determined from ab initio calculations to be 2.3 x 102 T2.994 exp(-9510 K/T) cm3 mol-1 s-1. The agreement between experimental results and model work was satisfactory. The main oxidation path for NH3 at high pressure under oxidizing conditions is NH3 → þOH NH2 →! þHO2;NO2 H2NO →! þO2 HNO →! þO2 NO →! þNH2 N2. The modeling predictions are most sensitive to the reactions NH2 + NO = NNH + OH and NH2 + HO2 = H2NO + OH, which promote the ammonia consumption by forming OH radicals, and to NH2 + NO = N2 + H2O and NH2 + NO2 = N2O + H2O, which are the main chain-terminating steps. © 2016 Elsevier Ltd. All rights reserved.
  • Display Note: Reprinted from Fuel, Vol 181, Song, Hashemi, Munkholt Christensen, Zhou, Marshall, Glarborg, Ammonia oxidation at high pressure and intermediate temperatures, Pages 358-365, Copyright 2016, with permission from Elsevier.
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