The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Yang Wenze - One of the best experts on this subject based on the ideXlab platform.
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investigation of co2 desorption kinetics in mdea and mdea dea Rich Amine solutions with thermo gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
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Investigation of CO2 desorption kinetics in MDEA and MDEA+DEA Rich Amine solutions with thermo-gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
Kang Shunji - One of the best experts on this subject based on the ideXlab platform.
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investigation of co2 desorption kinetics in mdea and mdea dea Rich Amine solutions with thermo gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
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Investigation of CO2 desorption kinetics in MDEA and MDEA+DEA Rich Amine solutions with thermo-gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
Dongsheng Wang - One of the best experts on this subject based on the ideXlab platform.
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a Rich Amine porous organic polymer an efficient and recyclable adsorbent for removal of azo dye and chlorophenol
RSC Advances, 2016Co-Authors: Haijian Ou, Ji Li, Guiying Liao, Dongsheng WangAbstract:A novel Rich-Amine porous organic polymer (RAPOP) was synthesized via the Schiff base reaction with melAmine (MA) and terephthalaldehyde (TA) as the monomers. The structures and properties of the as-prepared polymer were then systematically characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and N2 adsorption–desorption techniques. The results confirmed that the nanoparticles were constructed first and then assembled to form a porous structure with a high specific surface area of 368.05 m2 g−1 and a large pore volume of 0.651 cm3 g−1 arising from highly cross-linked aminal networks. It's fascinating adsorption performances towards azo dyes (methyl orange (MO)) and chlorophenol (2,4-dichlorophenol (2,4-DCP)) have also been investigated. The results show that solution pH 3 was an optimal condition for MO while the adsorption of 2,4-DCP was effective at pH 7, and the RAPOP dosages were decided accurately at 5 mg for MO and 10 mg for 2,4-DCP. The adsorption kinetics indicated that the adsorption equilibrium times were about 40 seconds for 2,4-DCP and 240 minutes for MO, and both followed a pseudo-second-order model. The isotherm data shown that it agreed well with the Langmuir isotherm with maximum adsorption amounts of 454.545 mg g−1 and 188.697 mg g−1 for MO and 2,4-DCP at 298 K, respectively. The adsorptions of MO and 2,4-DCP on RAPOP were both spontaneous and endothermic. In addition, the RAPOP could retain its high efficiency after desorption and regeneration. This study demonstrates that the RAPOP is a promising adsorbent for the removal of pollutants from aqueous solutions.
Shen Xizhou - One of the best experts on this subject based on the ideXlab platform.
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investigation of co2 desorption kinetics in mdea and mdea dea Rich Amine solutions with thermo gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
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Investigation of CO2 desorption kinetics in MDEA and MDEA+DEA Rich Amine solutions with thermo-gravimetric analysis method
International Journal of Greenhouse Gas Control, 2020Co-Authors: Kang Shunji, Shen Xizhou, Yang WenzeAbstract:Abstract In this paper, by means of thermo-gravimetric analysis(TGA), the desorption kinetics of CO2 absorbed in two kinds of Rich Amine solutions, MDEA (3.25mol/L) and MDEA+DEA(3.25mol/L-0.3mol/L), were investigated under different heating rates(2.5℃/min, 5℃/min, 10℃/min and 20℃/min). The thermal analysis kinetics was applied to analyze the TG-DTG curves of two Rich Amine solutions so as to research CO2 desorption kinetics. In addition, the CO2 desorption kinetics parameters have been calculated with model-free method Flynn-Wall-Ozawa (FWO) and model-fitting method Coats-Redfern (CR). The results indicated that CO2 desorption process could be divided into two stages. The CO2 and H2O were released with non-uniform speed in the first stage and MDEA or DEA with higher boiling points were evaporated in the second stage. For MDEA solution the average activation energy E was 50.36kJ/mol, the pre-exponential factor A was 1.68×107, and the most probable integral mechanism function was G α = α 3 / 2 . For MDEA+DEA solution the average activation energy E was 59.68kJ/mol, the pre-exponential factor A was 2.22×107, and the most probable integral mechanism function was G α = [ ( 1 + α ) 1 / 3 − 1 ] 2 . The technical feasibility of CO2 desorption performance in Rich Amine solutions with thermo-gravimetric analysis method was demonstrated.
Haijian Ou - One of the best experts on this subject based on the ideXlab platform.
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a Rich Amine porous organic polymer an efficient and recyclable adsorbent for removal of azo dye and chlorophenol
RSC Advances, 2016Co-Authors: Haijian Ou, Ji Li, Guiying Liao, Dongsheng WangAbstract:A novel Rich-Amine porous organic polymer (RAPOP) was synthesized via the Schiff base reaction with melAmine (MA) and terephthalaldehyde (TA) as the monomers. The structures and properties of the as-prepared polymer were then systematically characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and N2 adsorption–desorption techniques. The results confirmed that the nanoparticles were constructed first and then assembled to form a porous structure with a high specific surface area of 368.05 m2 g−1 and a large pore volume of 0.651 cm3 g−1 arising from highly cross-linked aminal networks. It's fascinating adsorption performances towards azo dyes (methyl orange (MO)) and chlorophenol (2,4-dichlorophenol (2,4-DCP)) have also been investigated. The results show that solution pH 3 was an optimal condition for MO while the adsorption of 2,4-DCP was effective at pH 7, and the RAPOP dosages were decided accurately at 5 mg for MO and 10 mg for 2,4-DCP. The adsorption kinetics indicated that the adsorption equilibrium times were about 40 seconds for 2,4-DCP and 240 minutes for MO, and both followed a pseudo-second-order model. The isotherm data shown that it agreed well with the Langmuir isotherm with maximum adsorption amounts of 454.545 mg g−1 and 188.697 mg g−1 for MO and 2,4-DCP at 298 K, respectively. The adsorptions of MO and 2,4-DCP on RAPOP were both spontaneous and endothermic. In addition, the RAPOP could retain its high efficiency after desorption and regeneration. This study demonstrates that the RAPOP is a promising adsorbent for the removal of pollutants from aqueous solutions.
