In this study, it was to investigate the swelling performance of novel biohybrid composite hydrogel sorbents containing acrylamide/potassium 3-sulfopropyl methacrylate/sodium alginate/bentonite in water and binary mix...In this study, it was to investigate the swelling performance of novel biohybrid composite hydrogel sorbents containing acrylamide/potassium 3-sulfopropyl methacrylate/sodium alginate/bentonite in water and binary mixtures of water-solvent. Novel hydrogels were synthesized with free radical solution polymerization by using ammonium persulfate/N,N,N’,N’-tetramethylethylenediamine as redox initiating pair in presence of poly(ethylene glycol) diacrylate as crosslinker. Swelling experiments were performed in water and binary mixtures of water-solvent (acetone, methanol and tetrahydrofuran) at 25°C, gravimetrically. Some swelling and diffusion properties of the hydrogels were calculated and they were discussed for the biohybrid/hybrid hydrogel systems prepared under various formulations. It has been seen the lower equilibrium percentage swelling ratio values (62% - 124%) in all solvent compositions in comparison with the equilibrium percentage swelling ratio values in water (718% - 2055%). Consequently, the hydrogel systems developed in this study could serve as a potential device for water and water-solvent binary mixtures.展开更多
Novel sorbent hydrogels containing acrylamide/sodium vinylsulfonate, carboxymethyl cellulose and zeolite were synthesized with free radical solution polymerization by using ammonium persulfate/<i><span style=...Novel sorbent hydrogels containing acrylamide/sodium vinylsulfonate, carboxymethyl cellulose and zeolite were synthesized with free radical solution polymerization by using ammonium persulfate/<i><span style="font-family:Verdana;">N</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N’</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N’</span></i><span style="font-family:Verdana;">-tetramethylethyle</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">nediamine as redox initiating pair in presence of poly(ethylene glycol) diacrylate as crosslinker. It was to investigate the water uptake properties of series of the novel hydrogels, the semi IPNs and the hybrid/biohybrid composite hydrogel sorbents synthesized in this study. Water uptake studies were performed in water and in water-solvent (acetone, methanol and tetrahydrofuran) binary mixtures at 25</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">°</span><span style="font-family:Verdana;">C, gravimetrically. Some swelling and diffusion parameters were calculated and discussed. It has been seen that the lower equilibrium swelling factor values in all solvent compositions in comparison with the equilibrium swelling factor values in water.</span></span></span></span>展开更多
双碳目标驱动下,化学吸收法捕集CO_(2)作为最具有大规模应用前景的碳捕集技术被寄予厚望。但吸收剂的高能耗特性是阻碍其进一步发展的关键因素。新型少水吸收剂由于其在降低能耗方面的巨大潜力引起广泛关注。该文以吸收剂主剂作为分类基...双碳目标驱动下,化学吸收法捕集CO_(2)作为最具有大规模应用前景的碳捕集技术被寄予厚望。但吸收剂的高能耗特性是阻碍其进一步发展的关键因素。新型少水吸收剂由于其在降低能耗方面的巨大潜力引起广泛关注。该文以吸收剂主剂作为分类基准,介绍3大类少水吸收剂(包括均相有机胺类少水吸收剂、两相吸收剂、离子液体、氨基硅油类少水吸收剂以及有机液体吸收剂)国内外研究进展,阐述少水吸收剂关键性能结果如热力学性能、动力学性能、物理特性等,并对不同类少水吸收剂性能进行了横向对比。结果表明,少水吸收剂具有相比乙醇胺(monoethanolamine,MEA)吸收剂更低的再生能耗(平均能耗:2.3 GJ/t CO_(2))。尽管少水吸收剂拥有相比MEA吸收剂更高的富液粘度,但其中均相少水吸收剂相平均粘度仅为10.3 m Pa·S,与目前混合胺吸收剂粘度相当,能够适配现有碳捕集系统中的换热系统,可达到理想换热效果,无需对贫富液换热器等进行额外改造优化。展开更多
基金The work was supported by Adnan Menderes University Research Fund,under project number FEF 15006.
文摘In this study, it was to investigate the swelling performance of novel biohybrid composite hydrogel sorbents containing acrylamide/potassium 3-sulfopropyl methacrylate/sodium alginate/bentonite in water and binary mixtures of water-solvent. Novel hydrogels were synthesized with free radical solution polymerization by using ammonium persulfate/N,N,N’,N’-tetramethylethylenediamine as redox initiating pair in presence of poly(ethylene glycol) diacrylate as crosslinker. Swelling experiments were performed in water and binary mixtures of water-solvent (acetone, methanol and tetrahydrofuran) at 25°C, gravimetrically. Some swelling and diffusion properties of the hydrogels were calculated and they were discussed for the biohybrid/hybrid hydrogel systems prepared under various formulations. It has been seen the lower equilibrium percentage swelling ratio values (62% - 124%) in all solvent compositions in comparison with the equilibrium percentage swelling ratio values in water (718% - 2055%). Consequently, the hydrogel systems developed in this study could serve as a potential device for water and water-solvent binary mixtures.
文摘Novel sorbent hydrogels containing acrylamide/sodium vinylsulfonate, carboxymethyl cellulose and zeolite were synthesized with free radical solution polymerization by using ammonium persulfate/<i><span style="font-family:Verdana;">N</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N’</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;">N’</span></i><span style="font-family:Verdana;">-tetramethylethyle</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">nediamine as redox initiating pair in presence of poly(ethylene glycol) diacrylate as crosslinker. It was to investigate the water uptake properties of series of the novel hydrogels, the semi IPNs and the hybrid/biohybrid composite hydrogel sorbents synthesized in this study. Water uptake studies were performed in water and in water-solvent (acetone, methanol and tetrahydrofuran) binary mixtures at 25</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">°</span><span style="font-family:Verdana;">C, gravimetrically. Some swelling and diffusion parameters were calculated and discussed. It has been seen that the lower equilibrium swelling factor values in all solvent compositions in comparison with the equilibrium swelling factor values in water.</span></span></span></span>
文摘双碳目标驱动下,化学吸收法捕集CO_(2)作为最具有大规模应用前景的碳捕集技术被寄予厚望。但吸收剂的高能耗特性是阻碍其进一步发展的关键因素。新型少水吸收剂由于其在降低能耗方面的巨大潜力引起广泛关注。该文以吸收剂主剂作为分类基准,介绍3大类少水吸收剂(包括均相有机胺类少水吸收剂、两相吸收剂、离子液体、氨基硅油类少水吸收剂以及有机液体吸收剂)国内外研究进展,阐述少水吸收剂关键性能结果如热力学性能、动力学性能、物理特性等,并对不同类少水吸收剂性能进行了横向对比。结果表明,少水吸收剂具有相比乙醇胺(monoethanolamine,MEA)吸收剂更低的再生能耗(平均能耗:2.3 GJ/t CO_(2))。尽管少水吸收剂拥有相比MEA吸收剂更高的富液粘度,但其中均相少水吸收剂相平均粘度仅为10.3 m Pa·S,与目前混合胺吸收剂粘度相当,能够适配现有碳捕集系统中的换热系统,可达到理想换热效果,无需对贫富液换热器等进行额外改造优化。
