Post combustion CO(sub 2) capture is most commonly carried out using an amine solution that results in a high parasitic energy cost in the stripper unit due to the need to heat the water which comprises a majority of the amine solution. It is also well known that amine solvents suffer from stability issues due to amine leaching and poisoning by flue gas impurities. Solid sorbents provide an alternative to solvent systems that would potentially reduce the energy penalty of carbon capture. However, the cost of using a particular sorbent is greatly affected by the usable lifetime of the sorbent. This work investigated the stability of a primary amine-functionalized ion exchange resin in the presence of O(sub 2) and SO(sub 2), both of which are constituents of flue gas that have been shown to cause degradation of various amines in solvent processes. The CO(sub 2) capture capacity was measured over multiple capture cycles under continuous exposure to two simulated flue gas streams, one containing 12 vol% CO(sub 2), 4% O(sub 2), 84% N(sub 2), and the other containing 12.5 vol% CO(sub 2), 4% O(sub 2), 431 ppm SO(sub 2), balance N(sub 2) using a custom-built packed bed reactor. The resin maintained its CO(sub 2) capture capacity of 1.31 mol/kg over 17 capture cycles in the presence of O(sub 2) without SO(sub 2). However, the CO(sub 2) capture capacity of the resin decreased rapidly under exposure to SO(sub 2) by an amount of 1.3 mol/kg over 9 capture cycles. Elemental analysis revealed the resin adsorbed 1.0 mol/kg of SO(sub 2). Thermal regeneration was determined to not be possible. The poisoned resin was, however, partially regenerated with exposure to 1.5M NaOH for 3 days resulting in a 43% removal of sulfur, determined through elemental analysis, and a 35% recovery of CO(sub 2) capture capacity. Evidence was also found for amine loss upon prolonged (7 days) continuous exposure to high temperatures (120 (number)14;C) in air. It is concluded that desulfurization of the flue gas stream prior to CO(sub 2) capture will greatly improve the economic viability of using this solid sorbent in a post-combustion CO(sub 2) capture process.

关键词：大气；碳排放；吸附剂

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This report explores the volatility of primary organic aerosol (POA) emitted from light duty gasoline-powered vehicles at atmospherically relevant concentrations using state of the science instrumentation. Existing POA partitioning models were tested through analysis of emissions changes that result from perturbations to the dilution air used during vehicle sampling.

关键词：大气；有机气溶胶；sip分析

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China’s fumed silica capacity grew 22.5% annually over 2009-2014. Domestic total fumed silica consumption in 2014 increased 9.6% on yearly basis.

关键词：锻制氧化硅；石油；化工；氨纶

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The growing domestic demand for precipitated silica is driven by tires, silicone elastomers, tooth paste, coatings and thermal insulation materials sectors.

关键词：轮胎；硅橡胶；牙膏；涂料；隔热材料

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Polyelectrolyte hydrogel is a three dimensional networks forming by charged polymer chains. The hydrophilic networks capable of imbibing large amount of water or biological fluids, mimics biological tissues. Because of this nature, great attention was devoted to these systems for biomedical applications by tuning the physicochemical properties with varying the degree of crosslinking either by physical or chemical or physical-chemical means. Numerous approaches have been investigated for formulation of polyelectrolyte hydrogels. In this chapter, an attempt was made to narrate the synthetic and natural materials and their mechanism to form cross-linked polyelectrolyte hydrogels. It was also tried to explain the importance of ionotropic gelation and polyelectrolyte complexation approaches, as these methods show great promise as a tool for the development in their application process. For further understanding in this area, a mathematical model was introduced to describe the thermodynamic behavior of polyelectrolyte hydrogels and derives conditions for thermodynamic phase equilibrium; the physical and chemical characterization of hydrogels, as well as special considerations that need to be made when characterizing polyelectrolyte hydrogels, were also discussed. In the end, a number of biomedical applications of polyelectrolyte hydrogel were given, such as in controlled release systems, different types of tissue reconstitution, for the enzyme and protein separations, etc.

关键词：聚电解质水凝胶；三维网络；生物医学

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报告从战略性分析、环境信息、竞争对手情报、资讯信息快报、市场行情与数据分析等几个方面对石油化工行业进行了分析评论。

关键词：石油化工；战略性分析；环境信息；竞争对手情报；资讯信息快报；市场行情

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报告从战略性分析、环境信息、竞争对手情报、资讯信息快报、市场行情与数据分析等几个方面对石油化工行业进行了分析评论。

关键词：石油化工；战略性分析；环境信息；竞争对手情报；资讯信息快报；市场行情

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报告从战略性分析、环境信息、竞争对手情报、资讯信息快报、市场行情与数据分析等几个方面对石油化工行业进行了分析评论。

关键词：石油化工；战略性分析；环境信息；竞争对手情报；资讯信息快报；市场行情

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报告从战略性分析、环境信息、竞争对手情报、资讯信息快报、市场行情与数据分析等几个方面对石油化工行业进行了分析评论。

关键词：石油化工；战略性分析；环境信息；竞争对手情报；资讯信息快报；市场行情

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报告从战略性分析、环境信息、竞争对手情报、资讯信息快报、市场行情与数据分析等几个方面对石油化工行业进行了分析评论。

关键词：石油化工；战略性分析；环境信息；竞争对手情报；资讯信息快报；市场行情

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