TY - JOUR
T1 - Overall kinetics of hydrogen peroxide formation by direct combination of H2 and O2 in a microreactor
AU - Voloshin, Yury
AU - Lawal, Adeniyi
PY - 2010
Y1 - 2010
N2 - Direct combination (DC) of hydrogen and oxygen over a heterogeneous catalyst in a microreactor is a novel method of producing hydrogen peroxide with significant economic advantages over the currently dominant anthraquinone autoxidation method. A kinetic rate expression for this reaction is required for design and modeling of a microreactor for the DC process. Since the formation of H2O2 by the DC process involves four simultaneous reactions (synthesis of H2O2, synthesis of water, reduction of H2O2 by H2 and decomposition of H2O2), the overall rate expression must take into account each of these reactions. In this work, we describe a reactor model that involves the four component reactions as well as mass transfer effects. The model is verified by comparing the predicted reactor performance with experimental data. In addition to providing a tool for reactor design, the model also confirms important assumptions regarding the mechanism of DC reaction.
AB - Direct combination (DC) of hydrogen and oxygen over a heterogeneous catalyst in a microreactor is a novel method of producing hydrogen peroxide with significant economic advantages over the currently dominant anthraquinone autoxidation method. A kinetic rate expression for this reaction is required for design and modeling of a microreactor for the DC process. Since the formation of H2O2 by the DC process involves four simultaneous reactions (synthesis of H2O2, synthesis of water, reduction of H2O2 by H2 and decomposition of H2O2), the overall rate expression must take into account each of these reactions. In this work, we describe a reactor model that involves the four component reactions as well as mass transfer effects. The model is verified by comparing the predicted reactor performance with experimental data. In addition to providing a tool for reactor design, the model also confirms important assumptions regarding the mechanism of DC reaction.
KW - Direct synthesis
KW - Hydrogen peroxide
KW - Kinetic model
KW - Langmuir-Hinshelwood mechanism
KW - Microreactor
KW - Palladium catalyst
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U2 - 10.1016/j.ces.2009.09.056
DO - 10.1016/j.ces.2009.09.056
M3 - Article
AN - SCOPUS:71849085934
SN - 0009-2509
VL - 65
SP - 1028
EP - 1036
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 2
ER -