Selective adsorption of carbon dioxide over nitrogen on calcined synthetic hectorites with tailor-made porosity
Source abstract
Abstract
Abstract Hectorites were synthesized using 1-butyl-3-methylimidazolium bromide, 1,3-didecyl-2-methylimidazolium chloride and 1-decyl-3-methylimidazolium chloride as synthesis directing agents at condensation temperature for 48 h. Calcinations of synthetic hectorites resulted mesoporous materials with pore diameters ranging from 3.4 to 5.5 nm. The pore diameters depended on the directing agent. Synthetic and calcined hectorites were characterized by powder X-ray diffraction. Adsorption properties of CO 2 and N 2 on calcined hectorites were investigated by volumetric measurements. The adsorption capacity for CO 2 and N 2 decreased with increasing pore diameter. The calcined hectorites showed very good selectivity for CO 2 over N 2 at lower as well as higher partial pressure at 303 K.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Dioxide Capture Technologies · Membrane Separation and Gas Transport · Zeolite Catalysis and Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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