The reaction between SO2 and MnO2 and the role of the sulfato complex in the SO2-induced isomerization of cis-2-butene.

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概要

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• The reaction between SO<SUB>2</SUB> and MnO<SUB>2</SUB> has been studied by measuring the consumption of SO<SUB>2</SUB>-gas and the infrared spectra of the wafer of MnO<SUB>2</SUB>. In the low-temperature range (<200 °C) the reaction is completed within one or two surface layers of MnO<SUB>2</SUB>, and the reaction products are the bidentate sulfato complex (C<SUB>2V</SUB>) and the sulfato complex in Td symmetry. In the high-temperature range, on the other hand, the reaction progresses deep into the bulk and can be described by this stoichiometric equation; MnO<SUB>2</SUB>+SO<SUB>2</SUB>→MnSO<SUB>4</SUB>. The catalysis of MnO<SUB>2</SUB> for the SO<SUB>2</SUB>-induced isomerization of <I>cis</I>-2-butene is closely related to the formation of the sulfate ion. The initiation step proposed for the isomerization is a polarization of the charge-transfer complex of SO<SUB>2</SUB> and butene under the influence of the strong electrostatic field caused by the generation of the surface sulfato complex.

• 公益社団法人 日本化学会の論文

著者

• Otsuka Kiyoshi

  Department Of Applied Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Techno

• Morikawa Akira

  Department Of Chemistry Faculty Of Science Nagoya University

• Tanaka Kimiaki

  Department of Chemical Engineering, Tokyo Institute of Technology

• Morikawa Akira

  Department of Chemical Engineering, Tokyo Institute of Technology

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