期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 20, 页码 7632-7640出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta00378h
关键词
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资金
- Department of Science and Technology (DST), New Delhi [IFA12-CH-60]
- S. N. Bose National Centre for Basic Sciences, Kolkata, India
- SNBNCBS
Clay based solid adsorbents comprised of several viable amines having varied amine densities and adsorption sites have been designed to capture isotopic CO2 from ambient air under standard temperature and pressure, keeping an eye on the preferential adsorption of the three major abundant isotopes of CO2 ((CO2)-C-12-O-16, (CO2)-C-13-O-16, and (COO)-C-12-O-16-O-18). Relative humidity induced isotopic CO2 adsorption, which appears to have received still little or even no attention, has been demonstrated using a laser based integrated cavity output spectroscopy technique and the adsorption kinetics describing the CO2 uptake rate were investigated to evaluate the efficiency of the adsorbents as well as to explore the underlying adsorption mechanism. In addition, all these novel adsorbents exhibit reversible CO2 adsorption in the oxidative environment and exceptional durability even after a prolonged cyclic adsorption-desorption study.
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