Activated Carbon Composites for Air Separation

Baker, Frederick S¹  Contescu, Cristian I¹  Tsouris, Costas¹  Burchell, Timothy D¹ 

[1] ORNL

关键词: ACTIVATED CARBON;    ADSORPTION;    AIR;    CARBON;    COAL;    COAL GASIFICATION;    COMPOSITE MATERIALS;    FUEL CELLS;    HYDROGEN;    MAGNETIC FIELDS;    PROBES;    SYNTHESIS GAS;   

DOI  :  10.2172/1024217
RP-ID  :  ORNL/TM-2006/587
PID  :  OSTI ID: 1024217
Others  :  Other: AA1510100
Others  :  FEAA028
Others  :  TRN: US201120%%23

美国|英语

来源: SciTech Connect

【 摘 要 】

Coal-derived synthesis gas is a potential major source of hydrogen for fuel cells. Oxygen-blown coal gasification is an efficient approach to achieving the goal of producing hydrogen from coal, but a cost-effective means of enriching O2 concentration in air is required. A key objective of this project is to assess the utility of a system that exploits porous carbon materials and electrical swing adsorption to produce an O2-enriched air stream for coal gasification. As a complement to O2 and N2 adsorption measurements, CO2 was used as a more sensitive probe molecule for the characterization of molecular sieving effects. To further enhance the potential of activated carbon composite materials for air separation, work was implemented on incorporating a novel twist into the system; namely the addition of a magnetic field to influence O2 adsorption, which is accompanied by a transition between the paramagnetic and diamagnetic states. The preliminary findings in this respect are discussed.