Effect of H2 in the synthesis of COS using liquid sulfur and CO or CO2 as reactants

Effect of H2 in the synthesis of COS using liquid sulfur and CO or CO2 as reactants The synthesis of COS from CO, CO2 and liquid sulfur in the presence and absence of hydrogen was explored. The reaction of H2 with liquid sulfur produced H2S and polysulfanes, which increase the reactivity of liquid sulfur and provide alternative complementary reaction routes for the formation of COS. The reaction from CO2 proceeds by forming CO as intermediate. Elevated pressure favors formation of COS from both carbon oxides due to the increasing residence time and the saturation of gases in the liquid. Above 350 °C, the solubility of H2S in sulfur and the hydrogenation of COS limit the conversion of CO. The approach provides a highly efficient method for the preparation of COS under mild reaction conditions, without using a catalyst or water adsorbents. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Effect of H2 in the synthesis of COS using liquid sulfur and CO or CO2 as reactants

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-010-0131-8
Publisher site
See Article on Publisher Site

Abstract

The synthesis of COS from CO, CO2 and liquid sulfur in the presence and absence of hydrogen was explored. The reaction of H2 with liquid sulfur produced H2S and polysulfanes, which increase the reactivity of liquid sulfur and provide alternative complementary reaction routes for the formation of COS. The reaction from CO2 proceeds by forming CO as intermediate. Elevated pressure favors formation of COS from both carbon oxides due to the increasing residence time and the saturation of gases in the liquid. Above 350 °C, the solubility of H2S in sulfur and the hydrogenation of COS limit the conversion of CO. The approach provides a highly efficient method for the preparation of COS under mild reaction conditions, without using a catalyst or water adsorbents.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Mar 10, 2010

References

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