Modeling study of homogeneous NO and N2O formation from oxidation of HCN in a flow reactor

Masakazu Shoji, Tsuyoshi Yamamoto, Shoji Tanno, Hideyuki Aoki, Takatoshi Miura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

To investigate the reaction chemistry of HCN oxidation, a modeling study was performed. The plug flow calculation code was used at atmospheric pressure in the temperature range from 1000 to 1400 K. The effect of initial H 2O concentrations and that of other components were discussed. The oxidation of HCN is controlled primarily by the HCN + OH reaction in case of increasing H2O concentration. The oxidation of HCN starts at lower temperatures and the conversion of HCN to NO is inhibited by increase in H 2O concentration. N2O formation by the NCO + NO reaction is inhibited by increase in H2O concentration because of the small amount of NO and NCO. In the presence of initial NO, NCO acts as a reducing agent for NO. NCO mainly reacts with initial NO, so N2O formation is not affected by H2O concentration. In case of adding CO, CO oxidation chemistry acts as a source of a radical pool, and HCN oxidation shifts to lower temperatures. Increasing H2O affects, the consumption of O radical and inhibits NO formation. The effect of H2O concentration on N 2O formation is small because of the number of O and H radicals formed by CO oxidation.

Original languageEnglish
Pages (from-to)337-345
Number of pages9
JournalEnergy
Volume30
Issue number2-4 SPEC. ISS.
DOIs
Publication statusPublished - Jan 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Modeling study of homogeneous NO and N<sub>2</sub>O formation from oxidation of HCN in a flow reactor'. Together they form a unique fingerprint.

Cite this