环氧大豆油制备工艺研究

介绍了在硫酸、７３２阳离子交换树脂的催化作用下，制备环氧大豆油的工艺，得出了最佳工艺条件。     

环氧菜籽油的合成与研究

以７３２＃强酸性阳离子树脂为催化剂制备环氧菜籽油，在不同条件下进行环氧化反应，得到较工艺条件，并对影响环氧化反应的几种因素作了探讨。     

高品质环氧大豆油的实验研究

环氧大豆油是强前增塑效果比较好的无毒、环保、可再生资源捌备的增塑翔,主要是用大豆油采用过氧化物氧化而制得的一种化工产品。近年来,我国已成为甄洲地区增塑剂生产量和消费最多的国家,随着人们环境保护意识的增强,医药以及食品包装、日用品、玩具等塑料制品对增塑剂提出了更高的卫生要求。文章通过实验研究了制备环氧大豆油的最佳原料配比,工艺条件和影响产晶质量的因素,并通过正交试验确定了最佳制备工艺条件。     

聚合工艺条件对环氧丙烯酸酯复合乳液的影响

制备了水性涂料常用的环氧丙烯酸酯复合乳液。研究了所选聚合工艺及聚合工艺条件,如反应温度、搅拌速度、滴加速度等对聚合反应的影响,确定了乳液聚合的反应条件。     

优质环氧大豆油的制备

介绍了以强酸性阳离子交换树脂为催化剂就地环氧化合成环氧大豆油工艺。通过L9（3^4）正交实验确定了最佳制备工艺条件,讨论了双氧水用量及粗品精制对产物的影响,考察了催化剂的使用寿命,找出了适宜的工艺条件,制备的产品质量优于我国标准。     

高分子量高活性聚醚多元醇的合成研究

研究了以甘油为起始剂,在氢氧化钾催化下,用环氧乙烷封端的高分子量高活性聚醚多元醇的合成工艺。考察了影响反应时间和产品质量的多种因素,获得了较佳的制备工艺条件。提出了计算产品分于量的经验关联式。     

一种新型耐温胶粘剂的合成及性能研究

在酚醛树脂的分子中引入环氧基团的方式，合成了一种环氧化酚醛胶粘剂，得出了制备热塑性酚醛树脂及环氧化反应的最佳条件，对产物的性能进行了测定，用红外吸收光谱对其分子结构进行了表征；结果表明，该胶粘剂剪切强度可迭28．8MPa，适用期为82s，产物可在250℃高温下长期使用；合成工艺简单，有望工业化生产。     

环氧大豆油合成工艺的研究

研究了以强酸性阳离子交换树脂为催化剂就地环氧化合成环氧大豆油工艺。通过L9（3^4）正交实验确定了最佳制备工艺条件,讨论了过氧化氢用量及粗品精制对产物的影响,考察了催化剂的使用寿命,找出了适宜的工艺条件：原料配比,大豆油：过氧化氢：催化剂：冰乙酸为100g：71．5mL：10．5g：11．5mL;反应温度65℃;反应时间5h。制备的产品质量优于国标。     

无溶剂法合成环氧大豆油新工艺的研究

叙述了无溶剂法合成环氧大豆油的方法，主要反应条件对环氧化反应的影响，并对溶剂法合成环氧大豆油与无溶剂法合成环氧大豆油的技术路线，工艺流程、工艺条件以及产品质量进行了比较     

阳离子沥青乳化剂—木质素季铵盐的研制

以纸浆废液中所含木质素为原料，以预制的环氧丙基三甲基氮化铵为中间体，在适当的催化条件下促进木质素与中间体形成阳离子季铵盐乳化剂，文中对中间体的合成工艺及性能作了详细地考察，并以龙口某厂草本纸浆废液中的木质素为原料制备出合格的沥青乳化剂。     

广利油田储集层毛管压力特征

本论文运用毛管压力曲线的形态分析方法结合物性参数,对广利油田的储层进行了很好的评价,得出了大量的统计数据,广利油田存在三类储层,分析了各种储层的特征,对该地区的进一步勘探和油气田的开发提供了一定的依据,具有一定的参考价值。     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

The Application of Biocatalysis in the Preparation and Resolution of Morita-Baylis-Hillman Adducts and Their Derivatives

The Morita-Baylis-Hillman (MBH) reaction affords highly functionalised allylic alcohols containing a new stereogenic centre. These MBH adducts are very versatile and have been transformed into a large range of products, some of which have medicinal potential. Several examples of asymmetric syntheses of MBH adducts have been reported, although a generally applicable method remains to be developed. Biocatalytic approaches for the synthesis and enzymatic kinetic resolution of MBH adducts have been reported, and are discussed in detail in this review. Enzymes able to catalyse the asymmetric MBH reaction have been identified, but selectivity and efficiency have generally been low. Lipases, esterases and nitrile-converting enzymes have all been successfully applied in the resolution of MBH adducts, with excellent selectivity being realised in most cases.     

1，2，4-三唑类衍生物的研究进展

三唑类杂环衍生物不仅具有广谱、高效的杀菌活性,而且具有良好的杀虫、除草及植物生长调节活性。综述了1,2,4-三唑类衍生物的生物活性和合成方法,同时指出了该类衍生物具有广阔的开发前景。     

酞菁类光敏染料的研究进展

酞菁类光敏染料具有低成本、化学性质稳定、对环境友好等优势,越来越受到人们的重视,近年来已成为研究的热点。研究人员现已对许多种酞菁类光敏染料进行了大量研究,数千种不同分子结构的该类型化合物已被合成,研究表明在取代基的作用下,与不同的金属络合所表现出的性能、特征各不相同,从而得出了一些能有效改善酞菁光谱吸收特性和提高光电转...     

The Catalytic Total Oxidation of Polycyclic Aromatic Hydrocarbons

Polycyclic Aromatic Hydrocarbons (PAHs) are a group of Volatile Organic Compounds (VOCs), which have serious health problems associated with their emission into the atmosphere. Catalytic oxidation is an effective abatement process to control PAH emissions, and the types of catalysts investigated have been reviewed. The majority of studies have used naphthalene as a model PAH, and in particular, catalysts containing palladium and platinum have demonstrated high activity for total oxidation. Catalysts based on the precious metals include those supported on high surface area supports, which have also been modified by adding further components, and metal exchanged zeolites. Metal oxide catalysts have also been employed and the most active for total oxidation are ceria-based. Studies of PAH total oxidation have largely been reported only in the last 10 years, and there still remains wide scope to develop improved catalysts and understand their catalytic mechanisms.     

水处理除盐系统出力不足的原因分析及处理措施

针对郑州热电厂五期补给水处理一级除盐系统酸碱耗大、自用水率高、出力严重不足等问题，对现场进行了调查研究，分析了主要原因，并提出了相应的处理措施，最终使问题得以解决。     

驱油剂在双河油砂上的静态吸附研究

采用静态吸附法研究了驱油剂OCS(石油磺酸盐)和HPAM(部分水解聚丙烯酰胺)在河南油田双河油砂上的吸附特性,求出了在使用浓度下的表观静态吸附量和饱和吸附量,并用Langm u ir和F reund lich公式对其吸附趋势进行了预测,发现OCS和HPAM都具有典型的单分子层的吸附规律。     

负载型纳米金催化剂的研究进展

金是一种高化学惰性金属,其纳米粒子具有独特的结构和性质,在催化、光电传感器和生物医药等领域应用广泛。研究表明,负载在金属氧化物等载体上的纳米金粒子具有很高的催化活性,特别是在CO低温催化氧化中,催化效率明显高于其他类型贵金属。纳米金催化剂的研究已经具有了相当的深度和广度,在工业催化和环境保护等领域显现出重要的发展前景和商机。