CO fuel and γ-LiAlO2 production through alkali carbonate-assisted CO2 splitting by reusing aluminum wastes

Li, Peng; Yang, Motong; Chen, Dong; Guo, Hongwei; Yan, Bingji

doi:10.1016/j.jcou.2020.101168

Cited by 1 publication

(1 citation statement)

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“…However, high investment, corrosion of the equipment and high regeneration energy consumption are problems for liquid adsorbents applied in industry. Researchers across the globe have conducted studies on solid adsorbents, including layered double hydroxide-derived [3,4], CaO-based [5,6], MgO-based [7,8] and alkaline ceramic-based adsorbents [9,10] for pre-combustion CO 2 capture, and carbon-based [11,12], zeolite-silica-based [13,14], metal-organic frameworkbased [15,16] and alkali metal carbonate-based adsorbents [17][18][19] for post-combustion CO 2 capture. Furthermore, the adsorption process, such as two stage vacuum swing adsorption (VPSA), temperature swing adorption (TSA), temperature/vacuum swing adsorption (TVSA) [20] and sound-assisted fluidized bed reactor [21], has also been investigated for implementation in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

CO2 Adsorption Performance and Kinetics of Ionic Liquid-Modified Calcined Magnesite

et al. 2021

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CO2 is a major contributor to global warming, and considerable efforts have been undertaken to capture and utilise it. Herein, a nanomaterial based on ionic liquid (IL)–modified calcined magnesites was investigated for CO2 capture. The synthesised nanomaterial (magnesite modified using [APMIM]Br) exhibited the best adsorption performance of 1.34 mmol/g at 30% IL loading amount, 50 °C, 0.4 MPa and 150 mL/min. In particular, the obtained nanomaterial could be regenerated at a low temperature of 90 °C for 3 h, and its CO2 adsorption capacity of 0.81 mmol/g was retained after eight cycles. FT-IR results showed that the imidazole ring and C–N group are directly related to CO2 adsorption capacity. Moreover, improving the conjugative effect of the imidazole ring enhanced the adsorption performance. Further, CO2 was adsorbed on the adsorbent surface and incomplete desorption decreased the BET surface area and CO2 adsorption capacity. Additionally, four models were selected to fit the adsorption kinetics. The results show that the adsorption mechanism fits the pseudo-first-order model well.

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