Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The influence of CO, CO2 and H2O on selective CO methanation over Ni(Cl)/CeO2 catalyst : On the way to formic acid derived CO-free hydrogen. / Konishcheva, M. V.; Potemkin, D. I.; Snytnikov, P. V. и др.
в: International Journal of Hydrogen Energy, Том 44, № 20, 19.04.2019, стр. 9978-9986.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - The influence of CO, CO2 and H2O on selective CO methanation over Ni(Cl)/CeO2 catalyst
T2 - On the way to formic acid derived CO-free hydrogen
AU - Konishcheva, M. V.
AU - Potemkin, D. I.
AU - Snytnikov, P. V.
AU - Sobyanin, V. A.
N1 - Publisher Copyright: © 2019 Hydrogen Energy Publications LLC
PY - 2019/4/19
Y1 - 2019/4/19
N2 - For the first time the influence of CO, CO2 and H2O content on the performance of chlorinated Ni–CeO2 catalyst in selective or preferential CO methanation was studied systematically. It was shown that the rate of CO methanation over Ni(Cl)/CeO2 increases with the increasing H2 concentration, is independent of CO2 concentration and decreases with increasing CO and H2O concentrations; the rate of CO2 methanation is weakly sensitive to H2 and CO2 concentrations and decreases with increasing CO and H2O concentrations. High catalyst selectivity was attributed to Ni surface blockage by strongly adsorbed CO molecules and ceria surface blockage by Cl, which both inhibit CO2 hydrogenation. For the first time, selective CO methanation over Ni(Cl)/CeO2 was studied for deep CO removal from formic acid derived hydrogen-rich gases characterized by high CO2 (40–50 vol%), low CO (30–1000 ppm) content and trace amounts of water. Composite Ni(Cl)/CeO2-η-Al2O3/FeCrAl wire mesh catalyst was demonstrated to be effective for this process at temperatures of 180–220°С selectivity 30–70%, WHSV up to 200 L (STP)/(g∙h). The catalyst provides high process productivity, low pressure drop, uniform temperature distribution, and appears highly promising for the development of a compact CO cleanup reactor. Selective CO methanation was concluded to be a convenient way to CO-free hydrogen produced by formic acid decomposition.
AB - For the first time the influence of CO, CO2 and H2O content on the performance of chlorinated Ni–CeO2 catalyst in selective or preferential CO methanation was studied systematically. It was shown that the rate of CO methanation over Ni(Cl)/CeO2 increases with the increasing H2 concentration, is independent of CO2 concentration and decreases with increasing CO and H2O concentrations; the rate of CO2 methanation is weakly sensitive to H2 and CO2 concentrations and decreases with increasing CO and H2O concentrations. High catalyst selectivity was attributed to Ni surface blockage by strongly adsorbed CO molecules and ceria surface blockage by Cl, which both inhibit CO2 hydrogenation. For the first time, selective CO methanation over Ni(Cl)/CeO2 was studied for deep CO removal from formic acid derived hydrogen-rich gases characterized by high CO2 (40–50 vol%), low CO (30–1000 ppm) content and trace amounts of water. Composite Ni(Cl)/CeO2-η-Al2O3/FeCrAl wire mesh catalyst was demonstrated to be effective for this process at temperatures of 180–220°С selectivity 30–70%, WHSV up to 200 L (STP)/(g∙h). The catalyst provides high process productivity, low pressure drop, uniform temperature distribution, and appears highly promising for the development of a compact CO cleanup reactor. Selective CO methanation was concluded to be a convenient way to CO-free hydrogen produced by formic acid decomposition.
KW - CO cleanup
KW - CO methanation
KW - Formic acid
KW - Nickel-ceria catalysts
KW - Preferential CO methanation
KW - Selective CO methanation
KW - NI/TIO2 CATALYST
KW - PERFORMANCE
KW - STEAM
KW - PREFERENTIAL OXIDATION
KW - SUPPORTED NICKEL-CATALYSTS
KW - REMOVAL
KW - CARBON-MONOXIDE
KW - WATER-VAPOR
KW - GAS
KW - TRACE CHLORINE
UR - http://www.scopus.com/inward/record.url?scp=85060146924&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.12.192
DO - 10.1016/j.ijhydene.2018.12.192
M3 - Article
AN - SCOPUS:85060146924
VL - 44
SP - 9978
EP - 9986
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 20
ER -
ID: 18290523