High temperature CO2 sorption with gallium-substituted and promoted hydrotalcites

Thermodynamic analysis of Glycerol Steam Reforming for hydrogen production with in situ hydrogen and carbon dioxide separation

“…The thermodynamic analysis was performed for temperatures in the range of 600-800 K, pressures between 1-5 atm and WGFRs between 3-9 (realistic operation conditions for hydrogen selective membranes [6,7] and carbon dioxide sorbents [5,8,9], which are close to those typically employed in the GSR [10,11]) ; the study considered also hydrogen removal fractions in the range of 0-0.99 and a carbon dioxide removal fraction of 0.99 (for the reasons explained in a posterior section). For all the cases, the yields of hydrogen, methane, carbon dioxide and carbon monoxide were analyzed.…”

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

“…Details of CO 2 sorption performances over some HTlc sorbents are shown in Table 3 [82,[89][90][91][92][93][94][95]. It was reported that many factors in CO 2 sorption process by HTlc can affect the sorption performance [89,91,94,96].…”

Progress in hydrotalcite like compounds and metal-based oxides for CO2 capture: a review

“…They have been being used as antacids, anion exchangers, fire retardants, base catalysts, etc. (Miguel et al, 2014). However, their applications in CO 2 capture have been explored since the last decade (Yong and Rodrigues, 2002).…”

“…The simultaneous modification with K and Ga markedly improves the sorption capacity and cyclic stability of MgeAl HTlc. While K promotion enhances CO 2 capture capacity, Ga 3þ substitution provides required thermo-mechanical stability for repetitive applications at elevated temperatures (Yavuz et al, 2009;Miguel et al, 2014). Wang et al (2010) investigated the effect of trivalent cations on CO 2 capture performance of Mg-M-CO 3 (M ¼ Al, Fe, Ga, and Mn) HTlcs.…”