Catalytic and electrocatalytic synthesis of NH3 in a H+ conducting cell by using an industrial Fe catalyst

被引：76

作者：

Ouzounidou, Martha

Skodra, Aglaia

Kokkofitis, Christos

Stoukides, Michael ^{[1
]}

机构：

[1] Dept Chem Engn, Thessaloniki 54124, Greece

[2] Univ Thessaloniki, Chem Proc Engn Res Inst, Thessaloniki 54124, Greece

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 1-2期

关键词：

ammonia synthesis; solid state proton conductor; Fe catalyst-electrode; NEMCA;

D O I：

10.1016/j.ssi.2006.11.019

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：

The catalytic and electrocatalytic synthesis of ammonia was studied in double-chamber and single-chamber proton conducting cells at 450700 degrees C and at atmospheric total pressure. A Fe-based industrial catalyst was used as the working electrode. The kinetics of the catalytic reaction of ammonia synthesis were evaluated under open-circuit. An up to 80% increase in the reaction rate was observed when protons were electrochemically "pumped" to the Fe electrode. A weak NEMCA effect was observed with the Faradaic efficiency (Lambda) and the reaction rate enhancement (rho) remaining below 3.0 and 2.0, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：153 / 159

页数：7

共 27 条

[21]

Vayenas C. G., 2001, ELECTROCHEMICAL ACTI, DOI DOI 10.1007/0-306-47551-0_4

[22]

VAYENAS CG, 1996, MOD ASPECT ELECTROC, V29, P57

[23]

Wade L. E., 1981, KIRK OTHMER ENCY CHE, P398

[24] Preparation of La1.9Ca0.1Zr2O6.95 with pyrochlore structure and its application in synthesis of ammonia at atmospheric pressure [J].