Effect of CO<sub>2</sub> on hydrogen permeation performance of Pd composite membrane

LU Chengzhuang; ZHANG Ruiyun; CHENG Jian; XU Shisen; YANG Guanjun; HUANG Hua

doi:10.19666/j.rlfd.201904057

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Effect of CO₂ on hydrogen permeation performance of Pd composite membrane

更新时间：2025-09-28

- Effect of CO₂ on hydrogen permeation performance of Pd composite membrane
- Thermal Power Generation Vol. 48, Issue 7, Pages: 142-148(2019)
- 作者机构：
  
  中国华能集团清洁能源技术研究院有限公司煤基清洁能源国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201904057
  CLC： TM911;TQ028
- Published Online：10 July 2019，
  
  Published：2019
- 稿件说明：
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LU Chengzhuang, ZHANG Ruiyun, CHENG Jian, et al. Effect of CO₂ on hydrogen permeation performance of Pd composite membrane[J]. Thermal power generation, 2019, 48(7): 142-148.
DOI：

LU Chengzhuang, ZHANG Ruiyun, CHENG Jian, et al. Effect of CO₂ on hydrogen permeation performance of Pd composite membrane[J]. Thermal power generation, 2019, 48(7): 142-148. DOI： 10.19666/j.rlfd.201904057.

摘要

采用化学镀方法在陶瓷管上制备了钯复合膜

研究了超薄钯复合膜(2mm)在分离CO_2/H_2混合气的透氢性能

分析了原料气流速、温度、压力等对透氢性能的影响

并对CO_2/H_2分离中形成的积碳进行了表征。结果表明:623K以下

CO_2吸附是影响透氢性能的主要原因

而723K以上

CO、H_2O和积碳的影响是主要因素;原料流速越高

CO_2/H_2反应越弱

当流速为2 000 mL/min以上时

CO_2/H_2的转化率很低;合适的CO_2/H_2分离温度范围为623～723 K

723 K以上CO_2/H_2反应较强

而623 K以下钯膜透氢量太低;原料侧压力越大

CO_2/H_2的转化率越高;经过CO_2/H_2分离实验后

钯膜上生成了表面碳、碳化钯、聚集碳及石墨碳。

Abstract

Pd composite membrane was prepared by electroless plating on ceramic tubes. The hydrogen permeation properties of CO_2/H_2 mixture on ultrathin Pd composite membrane(2 μm) were studied. The effects of feed gas velocity

temperature and pressure on the hydrogen permeation property were analyzed

and the carbon deposition in CO_2/H_2 separation was characterized. The results show that

at temperatures below 623 K

CO2 adsorption is the main factor affecting the hydrogen transmission

while over 723 K

the CO

H_2O and carbon deposition are the main factors. The higher the feed gas flow rate is

the weaker the CO_2/H_2 reaction is. When the flow rate is above 2 000 m L/min

the conversion rate of CO_2/H_2 is very low. The suitable CO_2/H_2 separation temperature range is 623～723 K. The reaction of CO_2/H_2 above 723 K is intense

while the hydrogen penetration of palladium film below 623 K is too low. The higher the feedstock side pressure

the higher the CO_2/H_2 conversion rate. The surface carbon

palladium carbide

carbon aggregation and graphite carbon were generated on the palladium membrane after the CO_2/H_2 separation experiment.

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Effect of CO2 on hydrogen permeation performance of Pd composite membrane

DOI：10.19666/j.rlfd.201904057

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Effect of CO₂ on hydrogen permeation performance of Pd composite membrane