TY - JOUR
T1 - Hydrogen permeation studies of composite supported alumina-carbon molecular sieves membranes
T2 - Separation of diluted hydrogen from mixtures with methane
AU - Llosa Tanco, Margot A.
AU - Medrano, Jose A.
AU - Cechetto, Valentina
AU - Gallucci, Fausto
AU - Pacheco Tanaka, David A.
PY - 2021/5/28
Y1 - 2021/5/28
N2 - One alternative for the storage and transport of hydrogen is blending a low amount of hydrogen (up to 15 or 20%) into existing natural gas grids. When demanded, hydrogen can be then separated, close to the end users using membranes. In this work, composite alumina carbon molecular sieves membranes (Al-CMSM) supported on tubular porous alumina have been prepared and characterized. Single gas permeation studies showed that the H2/CH4 separation properties at 30 °C are well above the Robeson limit of polymeric membranes. H2 permeation studies of the H2–CH4 mixture gases, containing 5–20% of H2 show that the H2 purity depends on the H2 content in the feed and the operating temperature. In the best scenario investigated in this work, for samples containing 10% of H2 with an inlet pressure of 7.5 bar and permeated pressure of 0.01 bar at 30 °C, the H2 purity obtained was 99.4%.
AB - One alternative for the storage and transport of hydrogen is blending a low amount of hydrogen (up to 15 or 20%) into existing natural gas grids. When demanded, hydrogen can be then separated, close to the end users using membranes. In this work, composite alumina carbon molecular sieves membranes (Al-CMSM) supported on tubular porous alumina have been prepared and characterized. Single gas permeation studies showed that the H2/CH4 separation properties at 30 °C are well above the Robeson limit of polymeric membranes. H2 permeation studies of the H2–CH4 mixture gases, containing 5–20% of H2 show that the H2 purity depends on the H2 content in the feed and the operating temperature. In the best scenario investigated in this work, for samples containing 10% of H2 with an inlet pressure of 7.5 bar and permeated pressure of 0.01 bar at 30 °C, the H2 purity obtained was 99.4%.
KW - Carbon membrane
KW - Hydrogen separation
KW - Hydrogen-methane mixture
KW - Low concentration hydrogen
UR - http://www.scopus.com/inward/record.url?scp=85086847123&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2020.05.088
DO - 10.1016/j.ijhydene.2020.05.088
M3 - Article
AN - SCOPUS:85086847123
SN - 0360-3199
VL - 46
SP - 19758
EP - 19767
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 37
ER -