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Mesoporous Cu-SBA-15 with highly ordered porous structure and its excellent CO₂ adsorption capacity

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dc.contributor.authorLakhi, K.S.
dc.contributor.authorSingh, G.
dc.contributor.authorKim, S.
dc.contributor.authorBaskar, A.V.
dc.contributor.authorJoseph, S.
dc.contributor.authorYang, J.H.
dc.contributor.authorIlbeygi, H.
dc.contributor.authorRuban, S.J.M.
dc.contributor.authorVu, V.T.H.
dc.contributor.authorVinu, A.
dc.date.issued2018
dc.descriptionData source: Supplementary data, https://doi.org/10.1016/j.micromeso.2018.03.024
dc.description.abstractCuOx loaded mesoporous silicas with highly ordered mesoporous structures (Cu-SBA-15) and different silicon to copper ratios were synthesized by using P123 as a template under mild acidic conditions. XRD and N 2 sorption results confirm the well-ordered 2D mesoporous structure with a high specific surface area and a large pore volume. The pore diameter of Cu-SBA-15 increases from 7.9 to 8.5 nm with a concomitant decrease of the specific surface area from 865 to 802 m 2 /g as the amount of Cu in the silica framework is increased. We also show the introduction of Cu in the SBA-15 makes a significant change in the final morphology, which changes from rod to curve shaped morphology when the amount of Cu in the SBA-15 is increased. XRD results confirm the presence of CuO nanoparticles inside the nanochannels of SBA-15. The materials were used as adsorbents for high pressure CO 2 adsorption at different temperatures −5, 0, 10 and 25 °C and pressures up to 30 bar. The highest CO 2 adsorption of 27.6 mmol/g at −5 °C was achieved for Cu-SBA-15 sample with a n Si/Cu ratio of 5 and was found to be much higher than that of pure SBA-15 silica under similar conditions, illustrating the role of CuO x doping in the SBA-15 framework.
dc.identifier.citationMicroporous and Mesoporous Materials, 2018; 267:134-141
dc.identifier.doi10.1016/j.micromeso.2018.03.024
dc.identifier.issn1387-1811
dc.identifier.issn1873-3093
dc.identifier.urihttps://hdl.handle.net/11541.2/131579
dc.language.isoen
dc.publisherElsevier BV
dc.relation.fundingARC FT100100970
dc.relation.fundingARC DP150104828
dc.relation.fundingARC DP170104478
dc.relation.fundingSABIC
dc.rightsCrown Copyright 2018 Published by Elsevier Access Condition Notes: Accepted manuscript available after 1 April 2020
dc.source.urihttps://doi.org/10.1016/j.micromeso.2018.03.024
dc.subjectCO2 adsorption
dc.subjectCu-SBA-15
dc.subjectdoughnut morphology
dc.subjecthigh pressure
dc.subjectisosteric heat
dc.titleMesoporous Cu-SBA-15 with highly ordered porous structure and its excellent CO₂ adsorption capacity
dc.typeJournal article
pubs.publication-statusPublished
ror.fileinfo12160799140001831 13160809510001831 MICMAT-D-18-00105R1_revised.pdf
ror.mmsid9916187010901831

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