国内外环氧树脂的生产现状及应用进展

本文阐述国内外环氧树脂发展动向及应用进展。     

共轭多孔聚合物应用于近红外光热转换材料

近红外光热转换材料在光热治疗、光驱动智能器件等医学和能源领域受到广泛重视.本文以商业化芳香小分子为单体,通过一步简单的交联聚合方法制得了四种共轭多孔聚合物,并首次系统研究了它们的光热转换性能.结果表明,它们均具有灵敏的近红外光热响应性,且材料的光热转换效率与单体结构中共轭苯环数有很大关系,其中两种聚合物的光热转换效率可...     

Structure–Thermodynamic‐Property Relationships in Cyanovinyl‐Based Microporous Polymer Networks for the Future Design of Advanced Carbon Capture Materials

Nitrogen‐rich solid absorbents, which have been immensely tested for carbon dioxide capture, seem until this date to be without decisive molecular engineering or design rules. Here, a family of cyanovinylene‐based microporous polymers synthesized under metal‐catalyzed conditions is reported as a promising candidate for advanced carbon capture materials. These networks reveal that isosteric heats of CO₂ adsorption are directly proportional to the amount of their functional group. Motivated by this finding, polymers produced under base‐catalyzed conditions with tailored quantities of cyanovinyl content confirm the systematical tuning of their sorption enthalpies to reach 40 kJ mol^?1. This value is among the highest reported to date in carbonaceous networks undergoing physisorption. A six‐point‐plot reveals that the structure–thermodynamic‐property relationship is linearly proportional and can thus be perfectly fitted to tailor‐made values prior to experimental measurements. Dynamic simulations show a bowl‐shaped region within which CO₂ is able to sit and interact with its conjugated surrounding, while theoretical calculations confirm the increase of binding sites with the increase of Ph? C?C(CN)? Ph functionality in a network. This concept presents a distinct method for the future design of carbon dioxide capturing materials.     

S Zorb装置高负荷运行的措施及效果

中国石油化工股份有限公司广州分公司1.50 Mt/a S Zorb装置自2010年1月10日开工投产以来,出现了反应器过滤器压差高、吸附剂转剂不畅、吸附剂活性下降等影响装置长周期高负荷运行的主要问题,通过使用ME7101高通量滤芯、改造下料流程、提高吸附剂活性等手段,将装置运行周期从过去最高的21.5个月延长到目前的30个月并仍维持正常生产,且负荷最高达110%,2016年每月加工量较2015年增加10~30 kt。     

The influence of carbonate rock on the processes of oil transformation

The study of the processes of crude oil transformation in carbonate rock was carried out on the “oil – carbonate rock” model systems. For the study, oils of different chemical composition recovered from both terrigenous and carbonate reservoirs, and rock from carbonate reservoir were selected. It was shown that not all oils were subjected the catalytic action of carbonate rock. In oils that have experienced the catalytic action of carbonate rock the content of aromatic hydrocarbons decreased significantly and the content of non-polar resins increased. In carbonate rock, in addition to calcite and aragonite the montmorillonite was detected and it was supposed that the catalytic effect of the carbonate rock was due to this clay mineral. It was found that the oil transformation in the carbonate rock did not require much time and high temperature, and also that the oil recovered from the carbonate reservoir was resistant to the catalytic action of the carbonate rock.     

Distribution of vanadium and vanadyl porphyrins during fractionation of resins of heavy sulfurous oils

Features of the content and distribution of vanadium and vanadyl porphyrins in the fractions of resins, which were obtained by separation using column chromatography on silica, have been studied on heavy sulfurous oils of various deposits of the Volga–Ural basin (Russia). The difference of the vanadium and vanadyl porphyrin contents in the fractions of oils of various production complexes has been shown. Features of structural–group composition and predominant types of vanadyl porphyrins in the fractions of resins have been determined.     

含辣椒碱的抗菌高吸水树脂的合成

以过硫酸铵、亚硫酸氢钠作引发剂,N,N’-亚甲基双丙烯酰胺作交联剂,将木薯淀粉与丙烯酸、辣椒碱在水溶液中接枝共聚,合成了具有抗菌性的高吸水性树脂。考察了添加辣椒碱形式、反应温度、反应时间、丙烯酸中和度、引发剂和交联剂用量对产物吸水性能的影响,结果表明,添加辣椒碱提取母液,在70℃下反应2．5h,丙烯酸中和度85％,引发剂和交联剂用量分别为0．6％和0．04％时,合成的吸水树脂有较高的吸水倍率。     

吸附法催化裂化汽油深度脱硫工艺研究

在固定床试验装置上考察了γ-Al2O3及γ-Al2O3负载锌、钨、钼等金属后的改性吸附剂对催化裂化汽油中硫的吸附行为.结果表明:W/γ-Al2O3吸附剂的吸附容量最大,是其它金属改性吸附剂的5倍.失活的W/γ-Al2O3吸附剂在再生温度250℃、空速2.0 h-1条件下用乙醇体积分数为5.0%的水蒸气再生6 h后,其活性可以完全恢复到新鲜吸附剂的水平.在上述再生条件下和80℃的吸附温度下,这一吸附剂有良好的可再生性和脱硫稳定性.     

聚乙烯醇基质球状疏水吸附树脂的制备及表征

以聚乙烯醇(PVA)为原料,甲醛作交联剂,采用悬浮聚合法制备了球状交联PVA颗粒。并对水溶液中PVA含量、表面活性剂种类、反应温度等影响因素进行了考察,最佳工艺条件为:PVA质量分数15%,表面活性剂V(Span-80):m(油酸钠)为2 mL/g,在88～92℃进行悬浮聚合。以球状交联PVA颗粒为基质,用醇钠溶液预处理后,通过Williamson醚化反应制备了球状疏水吸附树脂,最佳醚化反应条件为:醇钠溶液浓度2.0 mol/L,NaOH浓度4mol/L,醚化温度50～60℃。