TY - JOUR
T1 - A hydrogen purification and storage system using CO adsorbent and metal hydride
AU - Miura, Shinichi
AU - Fujisawa, Akitoshi
AU - Tomekawa, Shuhei
AU - Taniguchi, Yukinobu
AU - Hanada, Nobuko
AU - Ishida, Masayoshi
PY - 2013
Y1 - 2013
N2 - The CO Selective Adsorbent and Metal Hydride Intermediate Buffer (COA-MIB) method has been proposed as a hydrogen production/supply system with reformer. First, this method thoroughly eliminates carbon monoxide using an adsorption material that strongly selects carbon monoxide, and second it introduces a mixed gas to a metal hydride that purifies and stores hydrogen. A 100 NL/h laboratory scale apparatus was operated in daily start and stop operations for 1000 cycles for a total of 1500 h with quite good efficiency. The metal hydride used in this apparatus was an AB5-type whose hydrogen equilibrium pressure was adjusted to be 0.1 MPa at 25 C. As a result of the basic performance evaluation, we have experimentally verified that pure hydrogen can be produced from methanol reforming gas for 1000 cycles on a daily start/stop operation basis and a high hydrogen recovery rate of over 89% can be achieved. 3 N m3/h Bench scale apparatus was also operated with same mode for 100 cycles for a total of 150 h and shows almost the same performance. The new method enables us to minimize emissions of carbon dioxide by using compact and highly efficient fuel cells as a part of the smart community technologies.
AB - The CO Selective Adsorbent and Metal Hydride Intermediate Buffer (COA-MIB) method has been proposed as a hydrogen production/supply system with reformer. First, this method thoroughly eliminates carbon monoxide using an adsorption material that strongly selects carbon monoxide, and second it introduces a mixed gas to a metal hydride that purifies and stores hydrogen. A 100 NL/h laboratory scale apparatus was operated in daily start and stop operations for 1000 cycles for a total of 1500 h with quite good efficiency. The metal hydride used in this apparatus was an AB5-type whose hydrogen equilibrium pressure was adjusted to be 0.1 MPa at 25 C. As a result of the basic performance evaluation, we have experimentally verified that pure hydrogen can be produced from methanol reforming gas for 1000 cycles on a daily start/stop operation basis and a high hydrogen recovery rate of over 89% can be achieved. 3 N m3/h Bench scale apparatus was also operated with same mode for 100 cycles for a total of 150 h and shows almost the same performance. The new method enables us to minimize emissions of carbon dioxide by using compact and highly efficient fuel cells as a part of the smart community technologies.
KW - AB5
KW - CO selective adsorbent
KW - Daily start and stop operation
KW - Hydrogen purification
KW - Metal hydride
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U2 - 10.1016/j.jallcom.2013.03.154
DO - 10.1016/j.jallcom.2013.03.154
M3 - Article
AN - SCOPUS:84886724557
VL - 580
SP - S414-S417
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
SN - 0925-8388
IS - SUPPL1
ER -