The Experts below are selected from a list of 26523 Experts worldwide ranked by ideXlab platform
Fateme Rezaei - One of the best experts on this subject based on the ideXlab platform.
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Improving Adsorptive Performance of CaO for High-Temperature CO2 Capture through Fe and Ga Doping
2019Co-Authors: Ahmed Al-mamoori, Shane Lawson, Ali A. Rownaghi, Fateme RezaeiAbstract:Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering. Metal oxide doping is an effective strategy to address the durability issue of CaO. In this investigation, we report development of novel metal oxide-doped CaO adsorbents with high capture capacity, fast kinetics, and long-term stability. In particular, Fe and Ga with varied concentrations were used as promoters to improve the adsorption performance of CaO adsorbent. The doped adsorbents comprising of 10% Fe@CaO and 10% Ga@CaO exhibited the highest adsorption capacities of 13.7 and 14.2 mmol/g, respectively, at 650 °C, which were at least 2-folds higher than that of the bare CaO. Moreover, the doped-CaO materials showed reversible performance by desorbing almost all of the adsorbed CO2 during desorption step at the same temperature. Through in situ X-ray diffraction measurements, it was shown that the carbonation under CO2 and desorption under N2 Flow Take Place, resulting in efficient CO2 capture and adsorbent regeneration. The cyclic adsorption–desorption runs demonstrated the excellent stability of the materials by retaining 95% of their initial capacity after 10 cycles. Moreover, adsorption temperature was found to have a favorable impact on CO2 upTake over the doped adsorbents. The findings of this study highlight the feasibility of metal doping approach for improving the adsorptive performance of CaO adsorbents that could be used for high-temperature capture processes
Rezaei Fateme - One of the best experts on this subject based on the ideXlab platform.
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Improving Adsorptive Performance of CaO for High-Temperature CO₂ Capture through Fe and Ga Doping
'American Chemical Society (ACS)', 2019Co-Authors: Al-mamoori Ahmed, Lawson Shane, Rownaghi, Ali A., Rezaei FatemeAbstract:Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering. Metal oxide doping is an effective strategy to address the durability issue of CaO. In this investigation, we report development of novel metal oxide-doped CaO adsorbents with high capture capacity, fast kinetics, and long-term stability. In particular, Fe and Ga with varied concentrations were used as promoters to improve the adsorption performance of CaO adsorbent. The doped adsorbents comprising of 10% Fe@CaO and 10% Ga@CaO exhibited the highest adsorption capacities of 13.7 and 14.2 mmol/g, respectively, at 650 °C, which were at least 2-folds higher than that of the bare CaO. Moreover, the doped-CaO materials showed reversible performance by desorbing almost all of the adsorbed CO2 during desorption step at the same temperature. Through in situ X-ray diffraction measurements, it was shown that the carbonation under CO2 and desorption under N 2 Flow Take Place, resulting in efficient CO2 capture and adsorbent regeneration. The cyclic adsorption-desorption runs demonstrated the excellent stability of the materials by retaining 95% of their initial capacity after 10 cycles. Moreover, adsorption temperature was found to have a favorable impact on CO2 upTake over the doped adsorbents. The findings of this study highlight the feasibility of metal doping approach for improving the adsorptive performance of CaO adsorbents that could be used for high-temperature capture processes
Ahmed Al-mamoori - One of the best experts on this subject based on the ideXlab platform.
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Improving Adsorptive Performance of CaO for High-Temperature CO2 Capture through Fe and Ga Doping
2019Co-Authors: Ahmed Al-mamoori, Shane Lawson, Ali A. Rownaghi, Fateme RezaeiAbstract:Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering. Metal oxide doping is an effective strategy to address the durability issue of CaO. In this investigation, we report development of novel metal oxide-doped CaO adsorbents with high capture capacity, fast kinetics, and long-term stability. In particular, Fe and Ga with varied concentrations were used as promoters to improve the adsorption performance of CaO adsorbent. The doped adsorbents comprising of 10% Fe@CaO and 10% Ga@CaO exhibited the highest adsorption capacities of 13.7 and 14.2 mmol/g, respectively, at 650 °C, which were at least 2-folds higher than that of the bare CaO. Moreover, the doped-CaO materials showed reversible performance by desorbing almost all of the adsorbed CO2 during desorption step at the same temperature. Through in situ X-ray diffraction measurements, it was shown that the carbonation under CO2 and desorption under N2 Flow Take Place, resulting in efficient CO2 capture and adsorbent regeneration. The cyclic adsorption–desorption runs demonstrated the excellent stability of the materials by retaining 95% of their initial capacity after 10 cycles. Moreover, adsorption temperature was found to have a favorable impact on CO2 upTake over the doped adsorbents. The findings of this study highlight the feasibility of metal doping approach for improving the adsorptive performance of CaO adsorbents that could be used for high-temperature capture processes
Al-mamoori Ahmed - One of the best experts on this subject based on the ideXlab platform.
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Improving Adsorptive Performance of CaO for High-Temperature CO₂ Capture through Fe and Ga Doping
'American Chemical Society (ACS)', 2019Co-Authors: Al-mamoori Ahmed, Lawson Shane, Rownaghi, Ali A., Rezaei FatemeAbstract:Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering. Metal oxide doping is an effective strategy to address the durability issue of CaO. In this investigation, we report development of novel metal oxide-doped CaO adsorbents with high capture capacity, fast kinetics, and long-term stability. In particular, Fe and Ga with varied concentrations were used as promoters to improve the adsorption performance of CaO adsorbent. The doped adsorbents comprising of 10% Fe@CaO and 10% Ga@CaO exhibited the highest adsorption capacities of 13.7 and 14.2 mmol/g, respectively, at 650 °C, which were at least 2-folds higher than that of the bare CaO. Moreover, the doped-CaO materials showed reversible performance by desorbing almost all of the adsorbed CO2 during desorption step at the same temperature. Through in situ X-ray diffraction measurements, it was shown that the carbonation under CO2 and desorption under N 2 Flow Take Place, resulting in efficient CO2 capture and adsorbent regeneration. The cyclic adsorption-desorption runs demonstrated the excellent stability of the materials by retaining 95% of their initial capacity after 10 cycles. Moreover, adsorption temperature was found to have a favorable impact on CO2 upTake over the doped adsorbents. The findings of this study highlight the feasibility of metal doping approach for improving the adsorptive performance of CaO adsorbents that could be used for high-temperature capture processes
Ibrahim Dincer - One of the best experts on this subject based on the ideXlab platform.
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energy and exergy analysis of salihli geothermal district heating system in manisa turkey
International Journal of Energy Research, 2005Co-Authors: Leyla Ozgener, Ibrahim DincerAbstract:This study deals with an energy and exergy analysis of Salihli geothermal district heating system (SGDHS) in Manisa, Turkey. In the analysis, actual system data are used to assess the district heating system performance, energy and exergy efficiencies, specific exergy index, exergetic improvement potential and exergy losses. Energy and exergy losses throughout the SGDHS are quantified and illustrated in the Flow diagram. The exergy losses in the system, particularly due to the fluid Flow, Take Place in the pumps and the heat exchanger, as well as the exergy losses of the thermal water (e.g. geothermal fluid) and the natural direct discharge of the system. As a result, the total exergy losses account for 2.22, 17.88 and 20.44%, respectively, of the total exergy input to the entire SGDHS. The overall energy and exergy efficiencies of the SGDHS components are also studied to evaluate their individual performances and determined to be 55.5 and 59.4%, respectively. Copyright © 2005 John Wiley & Sons, Ltd.