Cyclic calcination/carbonation looping of dolomite modified with acetic acid for CO2 capture

A highly efficient CaO-based CO2 sorbent prepared by a citrate-assisted sol–gel technique

“…8). Operating at elevated calcination temperature accelerated the sintering of CaO particles, resulting in the loss of sorbent capacity [24,37]. Unlike our observation at calcination temperature of 800°C, wherein the material did not deactivate even at the 31st cycle, CaO-SG calcined at 850 and 900°C suffered some activity loss at the end of operation (deactivation of 5.8% and 12.5%, respectively), due to stronger structural sintering.…”

ab initio Thermodynamic Study of the CO2 Capture Properties of M2CO3 (M = Na, K)- and CaCO3-Promoted MgO Sorbents Towards Forming Double Salts

“…Their results showed that its CO 2 capture capacity could be as high as 197.6 mg CO 2 /g, and after CO 2 absorption the double salts K 2 Mg(CO 3 ) 2 and K 2 Mg(CO 3 ) 2 ·4(H 2 O) were formed. Li et al investigated the dolomite modified with acetic acid for CO 2 capture and found that the calcined modified dolomite possesses greater surface area and pore volume than calcined original sorbent during the multiple cycles (Li et al, 2008).…”

Screening of inert solid supports for CaO-based sorbents for high temperature CO2 capture

“…Thus it is of great significance to develop high-reactivity CaO sorbents with stable capacity performance over multiple carbonation/calcination cycles. A variety of methods have been investigated to improve the performance of the CaObased sorbents, including (i) reactivating CaO-based sorbents by hydration [10,11]; (ii) producing CaO sorbents from sinteringresistant precursors [12,13]; (iii) modifying the structure of natural Ca-containing minerals by organic acids [8,14,15]; and (iv) introducing inert solid support as second-phase refractory 'spacer' to resist aggregations of CaCO 3 /CaO particles [16][17][18][19][20][21][22][23][24][25].…”