Kinetic uptake experiments on InOF-1 confirm a maximum of 5.42 wt%CO_(2)capture at 30°C and a significant 2-fold increase(∼11 wt%)in CO_(2)capture under 20%relative humidity of water vapour.InOF-1 captures CO_(2...Kinetic uptake experiments on InOF-1 confirm a maximum of 5.42 wt%CO_(2)capture at 30°C and a significant 2-fold increase(∼11 wt%)in CO_(2)capture under 20%relative humidity of water vapour.InOF-1 captures CO_(2)under humid conditions(10%and 20%RH)and at relatively high temperatures(40 and 50°C)without any degradation of the crystalline structure which was corroborated by PXRD.展开更多
A crystalline,porous Metal-Organic Polyhedron(MOP)4 was readily assembled starting from 9H-carbazole-3,6-dicarboxylic acid,which was synthesised in only three steps.The single crystal X-ray diffraction analysis of the...A crystalline,porous Metal-Organic Polyhedron(MOP)4 was readily assembled starting from 9H-carbazole-3,6-dicarboxylic acid,which was synthesised in only three steps.The single crystal X-ray diffraction analysis of the resulting supramolecule evidenced voids that were occupied by coordinated as well as uncoordinated solvent molecules from the solvothermal reaction.Careful analysis of its desolvation process,activating the sample at 150℃and 10-5 bar(followed by FTIR),evidenced that all solvents were completely removed,leaving an empty but nevertheless crystalline MOP with coordinatively-unsaturated Cu(II)sites that was studied for gas adsorption using N_(2)at 77 K,and CO_(2)at 196 K.Notably,carbon dioxide was found to be strongly adsorbed in the activated 4(12.1 mmol g^(-1),53.2 wt%)with a molar enthalpy of adsorption ofΔH=65.12 kJ mol-1,revealing a great selectivity over nitrogen,which in turn showed negligible uptake under the same activation conditions.In situ Raman experiments demonstrated the direct interaction of CO_(2)molecules and coordinatively-unsaturated Cu(II)sites within 4.展开更多
From a binary equimolar gas-mixture of CO_(2)and CH4,NOTT-401 exhibits CO_(2)separation from CH4.By kinetic uptake experiments,NOTT-401 shows a maximum of 1.47 wt%CO_(2)capture at 30°C and a significant 7-fold in...From a binary equimolar gas-mixture of CO_(2)and CH4,NOTT-401 exhibits CO_(2)separation from CH4.By kinetic uptake experiments,NOTT-401 shows a maximum of 1.47 wt%CO_(2)capture at 30°C and a significant 7-fold increase(∼9.90 wt%)in CO_(2)capture under 40%relative humidity.展开更多
基金Dr A.Tejeda-Cruz(X-rayIIM-UNAM),CONACyT Mexico(212318)+1 种基金PAPIIT UNAM Mexico(IN100415)for financial support.E.G.-Z.thanks CONACyT(156801 and 236879)Mexico for financial support.Thanks to U.Winnberg(ITAM and ITESM)for scientific discussions.
文摘Kinetic uptake experiments on InOF-1 confirm a maximum of 5.42 wt%CO_(2)capture at 30°C and a significant 2-fold increase(∼11 wt%)in CO_(2)capture under 20%relative humidity of water vapour.InOF-1 captures CO_(2)under humid conditions(10%and 20%RH)and at relatively high temperatures(40 and 50°C)without any degradation of the crystalline structure which was corroborated by PXRD.
基金support.I.A.I.thanks CONACyT Mexico(212318)PAPIIT UNAM Mexico(IN100415 and IN101517)for financial support.
文摘A crystalline,porous Metal-Organic Polyhedron(MOP)4 was readily assembled starting from 9H-carbazole-3,6-dicarboxylic acid,which was synthesised in only three steps.The single crystal X-ray diffraction analysis of the resulting supramolecule evidenced voids that were occupied by coordinated as well as uncoordinated solvent molecules from the solvothermal reaction.Careful analysis of its desolvation process,activating the sample at 150℃and 10-5 bar(followed by FTIR),evidenced that all solvents were completely removed,leaving an empty but nevertheless crystalline MOP with coordinatively-unsaturated Cu(II)sites that was studied for gas adsorption using N_(2)at 77 K,and CO_(2)at 196 K.Notably,carbon dioxide was found to be strongly adsorbed in the activated 4(12.1 mmol g^(-1),53.2 wt%)with a molar enthalpy of adsorption ofΔH=65.12 kJ mol-1,revealing a great selectivity over nitrogen,which in turn showed negligible uptake under the same activation conditions.In situ Raman experiments demonstrated the direct interaction of CO_(2)molecules and coordinatively-unsaturated Cu(II)sites within 4.
基金Dr A.Tejeda-Cruz(X-ray,IIM-UNAM),CONACyT Mexico(212318)PAPIIT UNAM Mexico(IN100415)for financial supportM.R.G.thanks CONICET and BECAR Argentina for scholarship funding.Thanks to U.Winnberg(ITAM)for scientific discussions.
文摘From a binary equimolar gas-mixture of CO_(2)and CH4,NOTT-401 exhibits CO_(2)separation from CH4.By kinetic uptake experiments,NOTT-401 shows a maximum of 1.47 wt%CO_(2)capture at 30°C and a significant 7-fold increase(∼9.90 wt%)in CO_(2)capture under 40%relative humidity.
