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Synthesis of Size-Tunable CO2-Philic Imprinted Polymeric Particles (MIPs) for Low-Pressure CO2 Capture Using Oil-in-Oil Suspension Polymerization
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/acs.est.7b03259 Seyed Ali Nabavi 1, 2 , Goran T. Vladisavljević 1 , Yidi Zhu 1 , Vasilije Manović 2
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/acs.est.7b03259 Seyed Ali Nabavi 1, 2 , Goran T. Vladisavljević 1 , Yidi Zhu 1 , Vasilije Manović 2
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Highly selective molecularly imprinted poly[acrylamide-co-(ethylene glycol dimethacrylate)] polymer particles (MIPs) for CO2 capture were synthesized by suspension polymerization via oil-in-oil emulsion. Creation of CO2-philic, amide-decorated cavities in the polymer matrix led to a high affinity to CO2. At 0.15 bar CO2 partial pressure, the CO2/N2 selectivity was 49 (corresponding to 91% purity of the gas stream after regeneration), and reached 97 at ultralow CO2 partial pressures. The imprinted polymers showed considerably higher CO2 uptakes compared to their nonimprinted counterparts, and the maximum equilibrium CO2 capture capacity of 1.1 mmol g–1 was achieved at 273 K. The heat of adsorption was below 32 kJ mol–1 and the temperature of onset of intense thermal degradation was 351–376 °C. An increase in monomer-to-cross-linker molar ratio in the dispersed phase up to 1:2.5 led to a higher affinity toward CO2 due to higher density of selective amide groups in the polymer network. MIPs are a promising option for industrial packed and fluidized bed CO2 capture systems due to large particles with a diameter up to 1200 μm and irregular oblong shapes formed due to arrested coalescence during polymerization, occurring as a result of internal elasticity of the partially polymerized semisolid drops.
中文翻译：
油包油悬浮聚合法合成可调节大小的CO 2-压印聚合物颗粒（MIP），用于低压CO 2捕集
通过油包油型乳液悬浮聚合法合成了用于CO 2捕获的高选择性分子印迹聚丙烯酰胺-共-（乙二醇二甲基丙烯酸乙二醇酯）聚合物颗粒（MIPs）。CO的创作2中导致了高亲和力CO聚合物基质-philic，酰胺装饰空腔2。在0.15 bar的CO 2分压下，CO 2 / N 2的选择性为49（相当于再生后气流纯度的91％），在超低的CO 2分压下达到97 。印迹聚合物显示出更高的CO 2含量与非印迹形式相比，在273 K时达到最大平衡CO 2捕获能力为1.1 mmol g –1。吸附热低于32 kJ mol –1，剧烈热降解的起始温度为351– 376℃。分散相中单体与交联剂摩尔比的增加达到1：2.5，由于聚合物网络中选择性酰胺基的密度增加，导致对CO 2的亲和力更高。MIP是工业填充和流化床CO 2的有前途的选择 由于部分聚合的半固体液滴的内部弹性而导致的直径大至1200μm的大颗粒和不规则的长方形形状（在聚合过程中由于聚结被阻止而形成）而形成了一种捕集系统。
更新日期：2017-09-21
中文翻译：
油包油悬浮聚合法合成可调节大小的CO 2-压印聚合物颗粒（MIP），用于低压CO 2捕集
通过油包油型乳液悬浮聚合法合成了用于CO 2捕获的高选择性分子印迹聚丙烯酰胺-共-（乙二醇二甲基丙烯酸乙二醇酯）聚合物颗粒（MIPs）。CO的创作2中导致了高亲和力CO聚合物基质-philic，酰胺装饰空腔2。在0.15 bar的CO 2分压下，CO 2 / N 2的选择性为49（相当于再生后气流纯度的91％），在超低的CO 2分压下达到97 。印迹聚合物显示出更高的CO 2含量与非印迹形式相比，在273 K时达到最大平衡CO 2捕获能力为1.1 mmol g –1。吸附热低于32 kJ mol –1，剧烈热降解的起始温度为351– 376℃。分散相中单体与交联剂摩尔比的增加达到1：2.5，由于聚合物网络中选择性酰胺基的密度增加，导致对CO 2的亲和力更高。MIP是工业填充和流化床CO 2的有前途的选择 由于部分聚合的半固体液滴的内部弹性而导致的直径大至1200μm的大颗粒和不规则的长方形形状（在聚合过程中由于聚结被阻止而形成）而形成了一种捕集系统。
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