Isotopic study of ethanol dehydrogenation over a palladium membrane

被引:21
作者
Amandusson, H [1 ]
Ekedahl, LG
Dannetun, H
机构
[1] Linkoping Univ, Forum Sci, S-58183 Linkoping, Sweden
[2] Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
关键词
palladium; membrane; ethanol; hydrogen; dehydrogenation;
D O I
10.1006/jcat.2000.2996
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Dehydrogenation of ethanol and the subsequent permeation of hydrogen through a 25-mum-thick palladium membrane has been studied. At 350 degreesC, adsorbed ethanol will decompose on the surface. Initially, released hydrogen can permeate the membrane. In a continuous ethanol supply a carbonaceous layer will grow on the membrane surface, and eventually quench further permeation. If, however, oxygen is added to the ethanol supply, continuous oxidation of the decomposition products will occur, and the growth of the carbonaceous layer is suppressed. In this way a steady hydrogen permeation rate can be maintained. Experiments using isotopically labeled ethanol, CH3CH2OH, CH3CH2OD, CH3CD2OH, and CD3CH2OH, show that methyl hydrogen preferentially forms methane, and the hydroxyl hydrogen forms water, while it is the methylene hydrogen that is most likely to permeate the membrane. (C) 2000 Academic Press.
引用
收藏
页码:376 / 382
页数:7
相关论文
共 13 条
[1]   Methanol-induced hydrogen permeation through a palladium membrane [J].
Amandusson, H ;
Ekedahl, LG ;
Dannetun, H .
SURFACE SCIENCE, 1999, 442 (02) :199-205
[2]   Molecular beam studies of ethanol oxidation on Pd(110) [J].
Bowker, M ;
Holroyd, RP ;
Sharpe, RG ;
Corneille, JS ;
Francis, SM ;
Goodman, DW .
SURFACE SCIENCE, 1997, 370 (2-3) :113-124
[3]   Low temperature C-C bond scission during ethanol decomposition on Pt(331) [J].
Cong, Y ;
vanSpaendonk, V ;
Masel, RI .
SURFACE SCIENCE, 1997, 385 (2-3) :246-258
[4]   The study of alcohol induced hydrogen permeation in a catalytic membrane reactor [J].
Dannetun, H ;
Wilzen, L ;
Petersson, LG .
SURFACE SCIENCE, 1996, 357 (1-3) :804-808
[5]   THE INFLUENCE OF OXYGEN ON THE SELECTIVITY OF ALCOHOL CONVERSION ON THE PD(111) SURFACE [J].
DAVIS, JL ;
BARTEAU, MA .
SURFACE SCIENCE, 1988, 197 (1-2) :123-152
[6]  
ERIKSSON M, 1997, LINKOPING STUDIES SC
[7]  
FARVE TLF, 1985, J CHEM SOC CHEM COMM, P230
[8]   High-resolution x-ray photoelectron spectroscopy study of the ethanol oxidation reaction on Pd(110) [J].
Holroyd, RP ;
Bennett, RA ;
Jones, IZ ;
Bowker, M .
JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (17) :8703-8713
[9]   Molecular beam studies of alcohol (C-1-C-3) adsorption and reaction with oxygen pre-covered Pd(110) [J].
Holroyd, RP ;
Bowker, M .
SURFACE SCIENCE, 1997, 377 (1-3) :786-790
[10]  
KIKUCHI E, 1997, CATTECH MAR