ID 110028
Author
Sugiyama, Shigeru Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima|Department of Geosphere Environment and Energy, Center for Frontier Research of Engineering, The University of Tokushima|Department of Chemical Science and Technology, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Tanaka, Haruki Department of Chemical Science and Technology, The University of Tokushima
Kikumoto, Tetsuo Department of Chemical Science and Technology, The University of Tokushima
Nakangawa, Keizo Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima|Department of Geosphere Environment and Energy, Center for Frontier Research of Engineering, The University of Tokushima|Department of Chemical Science and Technology, The University of Tokushima KAKEN Search Researchers
Sotowa, Ken-Ichiro Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima|Department of Geosphere Environment and Energy, Center for Frontier Research of Engineering, The University of Tokushima|Department of Chemical Science and Technology, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Maehara, Keiko Coporate Research Laboratories, Mitsubishi Rayon Co. Ltd.
Ninomiya, Wataru Coporate Research Laboratories, Mitsubishi Rayon Co. Ltd.
Keywords
Oxidative Dehydrogenation
Sodium Lactate
Sodium Pyruvate
Pd/C
Pressurized Oxygen
Content Type
Journal Article
Description
According to previous reports, the oxidative dehydrogenation of lactic acid to pyruvic acid in an aqueous phase does not proceed with Pd/C, while Pd/C doped with Te or Pb has catalytic activity at atmospheric pressure and 363 K in an aqueous NaOH solution at a pH of 8. Since use of heavy metals, such as Te or Pb, is inconsistent with green chemistry, a heavy-metal-free Pd/C catalyst is employed in the present study. The oxidative dehydrogenation of sodium lactate to sodium pyruvate in an aqueous phase at 358 K under pressurized oxygen at 1 MPa proceeded favorably using Pd/C with no adjustment of solution pH. Under pressurized oxygen, the catalytic activity of Pd/C was similar to that of Pd/C doped with either Te or Pb. This result suggests that a heavy-metal-free Pd/C catalytst might also be applied to other catalytic reactions. As an alternative to doping Pd/C with Te or Pb, the dissolution of gaseous oxygen into the reaction solution significantly enhanced the catalytic activity of Pd/C. To show the contribution of the dissolution of gaseous oxygen, the effects of the volume of oxygen in the reactor (stainless autoclave) on the reaction rate and the activity were examined. The activation parameters thus obtained reveal that the volume of oxygen in the reactor is a more important determinant of catalytic activity than the activation of the reaction itself.
Journal Title
Journal of Chemical Engineering of Japan
ISSN
00219592
NCID
AA00709658
Volume
43
Issue
6
Start Page
514
End Page
520
Sort Key
514
Published Date
2010
Remark
Copyright © 2010 The Society of Chemical Engineers, Japan
EDB ID
Published Source
Journal of Chemical Engineering of Japan (2010) Vol.43 No.6 p.514-520
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Science and Technology