TY - JOUR
T1 - Adsorption of light hydrocarbons on HMS type mesoporous silica
AU - Newalkar, B. L.
AU - Choudary, N. V.
AU - Turaga, U. T.
AU - Vijayalakshmi, R. P.
AU - Kumar, P.
AU - Komarneni, S.
AU - Bhat, T. S.G.
N1 - Funding Information:
Authors (BLN and SK) gratefully acknowledge the support of this work by the NSF MRSEC program under grant number, DMR-0213623. NVC, PK and TB are thankful to the management of Indian Petrochemicals Corporation Limited (IPCL), Vadodara, India, for supporting this work. The authors are also thankful to Mr. S.P. Patel, IPCL, India, for his assistance during adsorption measurements.
PY - 2003/11/4
Y1 - 2003/11/4
N2 - Equilibrium adsorption isotherms for light hydrocarbons namely, ethane, ethylene, acetylene, propane, and propylene have been measured on hexagonal mesoporous silica (HMS)-type mesoporous silica. The measured data are analyzed using Langmuir-Freundlich adsorption isotherm model. The adsorption capacity for C2 and C3 olefins are found to be higher than for corresponding alkanes. Further, uptake of acetylene is observed to be more comparable to ethylene. The isosteric heats of adsorption for ethylene are marginally higher than ethane but those observed for propylene are found to be significantly higher than for propane. The isosteric heats observed for propylene are found to be comparable with those reported for π-complexation based systems. Such a trend has in turn suggested a higher affinity of HMS framework for propylene over propane.
AB - Equilibrium adsorption isotherms for light hydrocarbons namely, ethane, ethylene, acetylene, propane, and propylene have been measured on hexagonal mesoporous silica (HMS)-type mesoporous silica. The measured data are analyzed using Langmuir-Freundlich adsorption isotherm model. The adsorption capacity for C2 and C3 olefins are found to be higher than for corresponding alkanes. Further, uptake of acetylene is observed to be more comparable to ethylene. The isosteric heats of adsorption for ethylene are marginally higher than ethane but those observed for propylene are found to be significantly higher than for propane. The isosteric heats observed for propylene are found to be comparable with those reported for π-complexation based systems. Such a trend has in turn suggested a higher affinity of HMS framework for propylene over propane.
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U2 - 10.1016/j.micromeso.2003.08.008
DO - 10.1016/j.micromeso.2003.08.008
M3 - Article
AN - SCOPUS:0242407347
SN - 1387-1811
VL - 65
SP - 267
EP - 276
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 2-3
ER -