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A New Type Hydrogen Permeable Membrane and Application for H 2 O 2 Synthesis
Author(s) -
Yamanaka Ichiro,
Satake Yuichiro,
Pantira Privatananupunt,
Hiraki Daisuke,
Ogihara Hitoshi
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201601321
Subject(s) - catalysis , membrane , hydrogen , aqueous solution , chemistry , selectivity , inorganic chemistry , membrane reactor , chemical engineering , hydrogen production , redox , nafion , nuclear chemistry , materials science , electrochemistry , organic chemistry , electrode , biochemistry , engineering
Development of a hydrogen permeable membrane reactor in chemical process has been desired because of a great reduction of energy consumption. Previous studies were limited to Pd membranes. A new type of hydrogen permeable membrane layered three sheets (a reduction‐Pt‐catalyst sheet | a proton and electron co‐conductive sheet | an oxidation‐Pt‐catalyst sheet) was developed. The middle sheet was prepared by casting a paste of carbon powder and Nafion solution. When a gas mixture of H 2 and He (1:1) was introduced to the oxidation‐catalyst compartment at 298 K, a high concentration of H 2 was observed in the reduction‐catalyst compartment, a maximum H 2 /He ratio as 217. H 2 selectively permeated through the membrane. This concept was applied for synthesis of H 2 O 2 . When O 2 and H 2 were respectively introduced to the Co‐N−C reduction‐catalyst and the Pt oxidation‐catalyst, production of a pure H 2 O 2 aqueous solution of 3.8 mol dm −3 was succeeded with a good selectivity as 42 % based on H 2 at 278 K.