ELECTROCATALYTIC NONOXIDATIVE DIMERIZATION OF METHANE OVER AG ELECTRODES

被引：51

作者：

CHIANG, PH ^{[1
]}

ENG, D ^{[1
]}

STOUKIDES, M ^{[1
]}

机构：

[1] TUFTS UNIV,DEPT CHEM ENGN,MEDFORD,MA 02155

来源：

SOLID STATE IONICS | 1993年 / 61卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0167-2738(93)90340-9

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 electrocatalytic nonoxidative dimerization of CH4 to C2H4 and C2H6 was studied in a continuous stirred tank reactor at 600-750-degrees-C and atmospheric total pressure. The electrochemical reactors were one- and two-chamber cells configured as Ag \SCY\ Ag where the ionic conductivity of the ytterbia-doped strontia-ceria (SCY) electrolyte was studied. The presence of H2O or O2 was found to increase the protonic conductivity of the electrolyte. The oxygen-ion transport number of the SCY was small (0.02-0.03) while that of protons dominated (0.60-0.98). By applying current to the cell, the reaction rate of CH4 dehydrogenation to C2H4 and C2H6 was enhanced to as much as 8 times the open-circuit rate.

引用

页码：99 / 103

页数：5

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