High molecular weight polyethyleneimine functionalized three dimensional mesoporous silica for regenerable CO2 separation

Optimum operating parameters of CO2 sorption in turbulent fluidized bed regime using potassium carbonate supported on gamma alumina solid sorbent

“…where A, B, C are coded variables. The R 2 of the regression model of 0.91 revealed a good t between the results from the experiment and the predicted value obtained from eqn (3).…”

“…Table 1 also shows that the maximum capture capacity was obtained by Run 10, which was operated on medium values of sorption temperature and a gas ow rate, 60 C and 0.22 m s À1 respectively, with a minimum sorbent loading of 5 g. The results in Table 1 roughly revealed some details about the main effect of each operating parameter as well as about the interaction between operating parameters, but the data was insufficient to conclude whether each parameter held any statistically signicant contribution. Thus, statistical analysis of 2 3 factorial design plus center points was performed to accomplish the research objective.…”

“…Turbulent uidized bed regime is an attractive method to improve the performance of CO 2 sorption via solid sorbent due to its excellent mixing property of gas phase and solid phase. Statistically speaking, 2 3 factorial design plus center points demonstrated that sorption temperature, supercial gas velocity and sorbent packing all had signicant impacts on CO 2 sorption capacity. In addition, the interaction between sorption temperature and supercial gas velocity and the interaction between sorption temperature and sorbent packing also affected CO 2 sorption capacity.…”

“…1 The associated risk imposed upon the environment and human health escalates as the concentration of CO 2 in the atmosphere approaches the critical concentration at 580 ppm. 2,3 Due to the urgency and high priority for CO 2 reduction, CO 2 capture and storage (CCS) technology has been adopted by a number of large industrial plants in developed countries. [4][5][6][7] In the United States, the integration of Carbon Capture, Utilization, and Storage (CCUS) has generated significant revenues from selling CO 2 to petroleum companies to increase crude oil yield.…”

Imine‐Linked Covalent Organic Cage Porous Crystals for CO2 Adsorption

“…The appearance of new peaks for the N−H stretching confirms that the tertiary amine (–N=) present in COC‐PI reduced to secondary amine (‐NH‐) in COC‐PA. As for the band at ∼ 2850 and ∼ 2920 cm –1 , it is for the C–H stretching vibration of CH 2 present in skeletal of COC crystals . The formation of N‐based imine and amine linkage in COC‐MI, COC‐PI and COC‐PA crystals were confirmed by NMR spectra and respective functional groups summarized below.…”