Monolithic electrochemically promoted reactors:: A step for the practical utilization of electrochemical promotion

被引:22
作者
Balomenou, S. P.
Tsiplakides, D.
Katsaounis, A.
Brosda, S.
Hammad, A.
Foti, G.
Comninellis, Ch.
Thiemann-Handler, S.
Cramer, B.
Vayenas, C. G. [1 ]
机构
[1] Univ Patras, Dept Chem Engn, GR-26504 Patras, Greece
[2] Ecole Polytech Fed Lausanne, Fac Basic Sci, CH-1015 Lausanne, Switzerland
[3] Robert Bosch GmbH, Corp Res & Dev, Stuttgart, Germany
关键词
electrochemical promotion; monolithic electropromoted reactor; sputtered films;
D O I
10.1016/j.ssi.2006.03.027
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
A novel dismantlable monolithic-type electrochemically promoted catalytic reactor and "smart" sensor-catalytic reactor unit has been constructed and tested for hydrocarbon oxidation and NO reduction by C2H4 in the presence of O-2. In this novel reactor, thin (similar to 40 nm) porous catalyst films made of two different materials are sputter-deposited on opposing surfaces of thin (0.25 mm) parallel solid electrolyte plates supported in the grooves of a ceramic monolithic holder and serve as sensor or electropromoted catalyst elements. The catalyst dispersion was higher than 10%. A 22 flat plate reactor operated with apparent Faradaic efficiency up to 100, at near complete reactants conversion, at gas flow rates up to 30 l/min. The novel design has only two external electrical connections and thus significantly facilitates the practical utilization of electrochemical promotion of catalysis. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:2201 / 2204
页数:4
相关论文
共 21 条
[1]   Novel monolithic electrochemically promoted catalytic reactor for environmentally important reactions [J].
Balomenou, S ;
Tsiplakides, D ;
Katsaounis, A ;
Thiemann-Handler, S ;
Cramer, B ;
Foti, G ;
Comninellis, C ;
Vayenas, CG .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 52 (03) :181-196
[2]   ELECTROCATALYSIS - PAST, PRESENT AND FUTURE [J].
BOCKRIS, JO ;
MINEVSKI, ZS .
ELECTROCHIMICA ACTA, 1994, 39 (11-12) :1471-1479
[3]   Solid electrolytes as active catalyst supports:: Electrochemical modification of benzene hydrogenation activity on Pt/β"(Na)Al2O3 [J].
Cavalca, CA ;
Haller, GL .
JOURNAL OF CATALYSIS, 1998, 177 (02) :389-395
[4]  
FOTI G, 2000, CURR TOP ELECTROCHEM, V7, P1
[5]  
GRZYBOWSKASWIER.B, 1994, ANN REPORTS PROGR CH, V91, P395
[6]   Modelling alkali promotion in heterogeneous catalysis:: in situ electrochemical control of catalytic reactions [J].
Lambert, RM ;
Williams, F ;
Palermo, A ;
Tikhov, MS .
TOPICS IN CATALYSIS, 2000, 13 (1-2) :91-98
[7]   Heterogeneous electrocatalysis: a core field of interfacial science [J].
Lu, GQ ;
Wieckowski, A .
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, 2000, 5 (1-2) :95-100
[8]   Electrochemical Promotion of the NO Reduction by C2H4 on Pt/YSZ and by CO on Pd/YSZ [J].
Marwood, M. ;
Kaloyannis, A. ;
Vayenas, C. G. .
IONICS, 1996, 2 (3-4) :302-311
[9]   Electrochemical promotion of catalysis I. Thermodynamic considerations [J].
Metcalfe, IS .
JOURNAL OF CATALYSIS, 2001, 199 (02) :247-258
[10]   A NOVEL CROSS-FLOW DESIGN FOR SOLID-STATE ELECTROCHEMICAL REACTORS [J].
MICHAELS, JN ;
VAYENAS, CG ;
HEGEDUS, LL .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1986, 133 (03) :522-525