化学英语论文

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许多已知的冰阶段表现出了质子订购 转型，例如从质子无序 六角冰（星期四）以质子下令冰十一.1最近，两个 新质子命令冰阶段（十三和十四）已reported2 有关冰第五和第十二， respectively.Preparation若干冰 阶段并不简单，这解释了为什么直到最近， 只有一个新的冰阶段已经发现在过去20 years.3 特别是，排列形式的冰可能难以孤立内 该实验室因为动力学障碍分子轮换 是重要的低temperatures.Computer仿真提供了一个 辅助方法，在其中的影响，压力，温度， 和配置可以名义上控制十分精确，以 允许系统测绘阶段diagram.However的 Verity的任何模拟方法取决于其生育能力 不同的国家分相diagram.As挑战理论， 我们最近进行了一项双盲试验预测质子有序 形式的冰第十二称为冰十四。 虽然每个冰氧原子必须四面体协调员 化（在一个完美的网格） ，氢原子可能是无序的。 安排的质子在一个冰结构的确定 由贝尔纳福勒冰rules4其中规定： （ 1 ）必须有 两个氢原子毗邻每个氧气和（ 2 ）必须有 只有一个氢每表明，氢bond.Pauling5 任何冰阶段大约有（ 3 / 2 ）不适用何种方式 氢原子可安排，并建议所有可能的 结构的某一阶段是degenerate.However ，存在 质子命令无效这一阶段postulate.The质子 命令阶段有不同的特性从无序母公司 阶段，例如，冰七可以转化为质子下令冰 八的相关变化，晶胞参数和密度。

有机化学英语论文Abstract In this work the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol wereinvestigated. Textural parameters of four kinds of polymeric resins namely AB-8 D4006 NKA-II and D16 resin were separately measuredby ASAP 2010. The surface chemistry of these polymeric resins was determined by means of inverse gaschromatography (IGC) and diffusereflectance infrared Fourier transform spectroscopy (DRIFTS). Static equilibrium adsorption experiments were carried out to obtain theisotherms of phenol on the polymeric resins. It was shown that NKA-II and AB-8 resin possessed relatively high BET surface areas andmicropore volumes while D4006 and D16 resin possessed comparatively low BET surface areas and micropore volumes. The results of IGCexperiments revealed that NKA-II resin had extraordinary high specific component of the free energy of adsorption both for polar acetone andbenzene probe and thus extraordinary strong surface polarity compared to the other polymeric resins. It was also found that the isotherm ofphenol on NKA-II was much higher than that on the other polymeric resins due to its strongest surface polarity and largest micropore volumeamong four kinds of resins. These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface chemistry. The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric resins. 2004 Elsevier B.V. All rights reserved. Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography

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