Indexed by:
Journal Papers
First Author:
Chen, Wei
Correspondence Author:
Chen, W (reprint author), Dalian Univ Technol, Res & Dev Ctr Membrane Sci & Technol, State Key Lab Fine Chem, 2 Linggong Rd, Dalian 116024, Peoples R China.
Co-author:
He, Gaohong,Ge, Feilong,Xiao, Wu,Benziger, Jay,Wu, Xuemei
Date of Publication:
2015-01-01
Journal:
CHEMSUSCHEM
Included Journals:
SCIE、EI、PubMed、Scopus
Document Type:
J
Volume:
8
Issue:
2
Page Number:
288-300
ISSN No.:
1864-5631
Key Words:
biomass; diffusion layers; electrochemistry; fuel cells; hydrogenation
Abstract:
For the first time, the hydrophobicity design of a diffusion layer based on the volatility of hydrogenation reactants in aqueous solutions is reported. The hydrophobicity of the diffusion layer greatly influences the hydrogenation performance of two model biomass derivatives, namely, butanone and maleic acid, in polymer electrolyte membrane reactors operated at atmospheric pressure. Hydrophobic carbon paper repels aqueous solutions, but highly volatile butanone can permeate in vapor form and achieve a high hydrogenation rate, whereas, for nonvolatile maleic acid, great mass transfer resistance prevents hydrogenation. With a hydrophilic stainless-steel welded mesh diffusion layer, aqueous solutions of both butanone and maleic acid permeate in liquid form. Hydrogenation of maleic acid reaches a similar level as that of butanone. The maximum reaction rate is 340 nmolcm(-2) s(-1) for both hydrogenation systems and the current efficiency reaches 70%. These results are better than those reported in the literature.
Translation or Not:
no
