CO2 Selective Ceramic Membrane for Water-Gas-Shift Reaction with Concomitant Recovery of CO2. Quarterly Report for the Period January 1, 2005, to March 31, 2005.

Liu, P. K. T.

Technical Information Center Oak Ridge Tennessee

关键词: Ceramic membranes;    Carbon dioxide recovery;    Adsorbents;    Catalysts;    Ceramics;   

RP-ID  :  DE2005841132

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In this quarter, we have focused on the completion of the loose ends of the experimental study. A series of CO2-affinity membranes (carbonaceous base) prepared previously were characterized and evaluated for their suitability for the proposed application The CO2 permeance and selectivity are 0.5 to >3 m3/m2/hr/bar and 4 to 10 for CO2 over nitrogen respectively. Based upon its performance dependence on temperature and pore size, we conclude that this type of CO2 affinity membrane shows significant surface affinity to CO2 over nitrogen even at the temperature as high as 220oC, which is within the typical operating condition for LTS-WGS. Future study should focus on mixture separations for CO/CO2/H2 to establish the selectivity of CO2 over CO and H2 which are present in the WGS reaction of the coal gasifier off-gas.