Practical and inexpensive acid-activated montmorillonite catalysts for energy-efficient CO2 capture. Issue 19 (17th September 2020)

• Record Type: Journal Article
• Authors: Bhatti, Umair H.; Kazmi, Wajahat W.; Muhammad, Hafiz A.; Min, Gwan Hong; Nam, Sung Chan; Baek, Il Hyun
• Is Part Of: Green chemistry. Volume 22:Issue 19(2020)
• Page Start: 6328
• Page End: 6333
• Publication Date: 2020-09-17
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d0gc01887b
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Acid-activated montmorillonite catalysts were prepared and tested for optimizing CO2 desorption from CO2 -rich amine solutions, eventually for energy-efficient CO2 capture. Abstract : Here, we report acid-activated montmorillonite as a cheap, durable, abundant, and efficient heterogeneous catalyst to optimize the CO2 desorption rate at low temperatures (≤86 °C), eventually to significantly minimize the energy penalty of amine solutions employed for CO2 capture. The prepared catalysts do not degrade and can be easily separated by simple filtration. Detailed characterization reveals an increase in the BET surface area, mesoporosity, and surface acidity induced by the acid-activation process. These are the key catalytic properties responsible for the superior catalytic performance.