CO2 fixation mechanism of kaolin treated with organic amines at varied temperatures and pressure
Source abstract
Abstract
CO 2 capture and storage is an effective way to control CO 2 levels in the atmosphere. However, the adsorption technology is determined by many factors, such as temperature, pressure, and material cost. In this study, a clay-based CO 2 adsorbent was designed to monitor the possible factors that affect the geological condensation of CO 2 under varied conditions. The effect of molecular chain length on the CO 2 adsorption performance of intercalated kaolinite was discussed in detail. The prepared kaolinite/n-hexylamine complex achieved a 17.0 (±0.4) mL/g CO 2 adsorption capacity when 6.35% (±0.05) n-hexylamine was loaded, which has significantly improved the utilization rate of organic amines. A higher relative CO 2 adsorption capacity (in proportion to the amount of amine) was obtained at lower temperatures and higher pressures. The mechanism of CO 2 adsorption of organic amine-intercalated kaolinite was discussed based on Fourier transform infrared spectroscopy and specific surface area measurements. The enhanced relative CO 2 adsorption capacity at low-temperature and high-pressure conditions may provide a hint to the geological condensation of CO 2 at high latitude positions.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Dioxide Capture Technologies · Membrane Separation and Gas Transport · Phase Equilibria and Thermodynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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