A methanol steam micro-reformer for low power fuel cell applications

被引：19

作者：

Cominos, V ^{[1
]}

Hardt, S ^{[1
]}

Hessel, V ^{[1
]}

Kolb, G ^{[1
]}

Löwe, H ^{[1
]}

Wichert, M ^{[1
]}

Zapf, R ^{[1
]}

机构：

[1] Inst Mikrotech Mainz GmbH, D-55129 Mainz, Germany

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 2005年 / 192卷 / 05期

关键词：

methanol; steam reforming; fuel cell; micro-reformer;

D O I：

10.1080/009864490510923

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A micro-reformer was fabricated and its performance investigated using copper-zinc catalysts with differing compositions and loadings at various operating conditions. A catalyst with 3: 1 copper-to-zinc ratio and 8 wt% loading produced enough hydrogen to power a 28W PEM fuel cell when using a third of the reformer's volume ( 8cm(3)) and assuming 64% fuel cell efficiency. Methanol conversion was 65% while hydrogen content in the off-gas was 45% at a temperature of 275 degrees C and residence time of 0.11s. Carbon monoxide levels were approximately 1.45%. Higher methanol conversions ( 80%) and hydrogen content in the off-gas ( 50%) were achieved by a second catalyst with 16 wt% at 290 degrees C while utilizing the entire reformer volume. Hydrogen yield and selectivity were high ( 78 and 98% respectively). Extrapolating from present results, the maximum power output possible to be achieved by this device is 84 W.

引用

页码：685 / 698

页数：14

共 18 条

[1] An analysis of the performance of membrane reactors for the water-gas shift reaction using gas feed mixtures [J].