交联聚丙烯的研究现状

本文着重介绍了研制交联聚丙烯的方法。交联法主要有过氧化物法、辐射法、叠氮法和离子法，其中过氧化物法和辐射法最为切实可行，同时还对交联聚丙烯的表征方法作了简要介绍。     

有机溶剂制浆技术进展

本文介绍了几种主要的有机溶剂制浆方法，评价了方法的优点，性能及应用前景。     

环境友善的制浆造纸新技术（三）

文章分几个部分介绍制浆造纸生产过程的主要污染情况以及低污染制浆工艺研究开发的主要进展。     

硝酸钾生产方法简介

1 序言硝酸钾(KNO_3)是一种重要的工业氧化剂,它被广泛应用于制造烟火、黑火药、陶瓷彩釉彩药、药物、催化剂等方面,另外在农业上又是良好的钾肥。国内外工业产量很大,并且不断有新的生产方法出现。目前,国内较多采用的方法是转化法,因生产     

戊二醛的合成及应用

介绍了戊二醛合成方法的发展沿革，对吡啶法，吡喃法，戊二醇法，戊二酸法，环戊烯法等戊二醛的主要合成工艺进行述评，并对这些工艺进行了简单的比较，阐述了目前国内生产状况及戊二醛在消毒方面，帛革工业，石油工业等方面的应用。同时对戊二醛产品的市场前景作了简要的叙述。     

氯乙烯的生产技术及产需现状

本文介绍了乙炔法,烯块法,乙烯法和乙烷法合成氯乙烯生产工艺现状,对近几年来氯乙烯国际及国内市场的供应情况进行了分析和预测。     

谈辅助生产费用分配方法的比较和学习

对辅助生产费用分配方法做了深入的比较和研究，并指出学好几种分配方法的关键和技巧，对学生学好辅助生产费用分配方法和将其应用到实践中去有一定参考价值。     

液相法在陶瓷粉体合成中的应用

液相法制备的陶瓷粉体纯度、粒度、微观形貌可控,均匀性好,并且可实现颗粒在分子级别上的复合、均化,是陶瓷粉体合成及批量化生产的重要方法.总结了目前常用的几种液相法:共沉淀法、溶胶凝胶法、喷雾干燥法、喷雾热分解法等在陶瓷粉体制备方面的研究进展,并对液相法的未来发展进行了展望.     

二甲基亚砜生产技术

介绍国内外二甲基亚砜的生产概况，评述了生产工艺，揭示了存在的问题，进而对我国二甲基亚砜的生产提出建议。     

羰化法制醋酸乙酸

本文着重对羰化法制醋酸乙烯的催化技术进行了评述。此法不需要乙烯（或乙炔）及醋酸，而只使用甲醇和合成气即可同时制取醋酸乙烯和醋酐。本文还对醋酸乙烯传统生产方法的生产过程和催化技术进行了简要的评述。     

我国环氧丙烷的生产与市场分析

评述了环氧丙烷的生产工艺,分析了国内环氧丙烷、苯乙烯及其主要衍生产品的生产、消费和贸易情况。指出我国环 氧丙烷衍生产品的发展严重滞后,主要衍生产品聚醚的品种单一,在精细化工和表面活性剂方面应用很少;第二大衍生产品丙 二醇已停产。建议我国环氧丙烷生产企业应以市场为导向有序生产,理性竞争。     

环氧丙烷产业现状及发展趋势

简述了全球及我国环氧丙烷产业的生产及供需现状;对环氧丙烷在聚醚多元醇、丙二醇/碳酸二甲酯、丙二醇醚及其酯类等领域的应用进行了分析;并对环氧丙烷生产技术进行了比较,提出了发展建议。     

用异丙苯过氧化氢作氧化剂合成环氧丙烷的新技术(续)

<正>(上接2007年第5期)3.4脱水-氢化工艺使回收PO后的反应液中的CMA先在催化剂存在下脱水转化成α-甲基苯乙烯,然后在氢化催化剂存在下,使α-甲基苯乙烯氢化为CM。     

环氧乙烷环氧丙烷嵌段共聚醚应用进展

介绍了环氧乙烷环氧丙烷嵌段共聚醚的生产技术和应用领域,重点叙述了烯丙醇类环氧乙烷环氧丙烷共聚醚在减水剂行业中的应用。     

Gas phase epoxidation of propylene with CO/O2 mixture on Au/TiO2

As it is known, propylene is able to react with H₂/O₂ mixture over gold particles supported on titania to give selectively propylene oxide. In the present work, similar epoxidation of propylene is achieved through the use of CO instead of hydrogen as the reduction agent. The propylene oxide yield goes through the maximum as a function of reaction time, the maximal value being twice higher compared to the yield of propylene oxide attained by “traditional” reaction with H₂/O₂ mixture. The propylene oxide selectivity attains 93% at propylene conversion of 2%. Utilization efficiency of CO reaches 25%, which is comparable to that of H₂.     

环氧丙烷绿色合成技术进展

环氧丙烷 (PO)绿色合成的研究主要集中在催化剂的选取和实验条件的优化上。文章综述了近几年在PO绿色合成方面的研究方法 ,包括光助催化氧化丙烯合成PO、Ag催化剂催化丙烯环氧化、Au催化剂催化丙烯环氧化、TS - 1催化剂合成PO等技术 ,并对其前景进行了分析展望。     

聚氯乙烯的生产现状与市场前景

详细论述了聚氯乙烯生产工艺和生产现状，分析了市场情况及发展前景，并对我国聚氯乙烯工业的发展提出了建议。     

The role of water in propylene partial oxidation: thermal desorption studies on Ag(110)

The desorption and reactions of propylene and propylene oxide adsorbed on atomic oxygen covered and hydroxyl covered Ag(110) were investigated to elucidate the effect of water on the oxidation of propylene over silver catalysts. Previous studies clearly indicate enhancement of propylene partial oxidation by the addition of water to reactor feed streams. Propylene combustion by oxygen adatoms on Ag(110) is completely passivated by water coadsorption on the oxygen atom covered surface (water adsorption on O-Ag(110) results in hydroxyl groups). The desorption activation energy of propylene and propylene oxide is increased by up to 30% by adsorbed oxygen atoms on Ag(110). The desorption activation energy for propylene and propylene oxide is reduced on the hydroxyl covered surface relative to desorption from atomic oxygen covered Ag(110). These results suggest that the inhibition of deep oxidation plays an important role in the previously observed water enhancement. In addition, the decreased desorption activation energies for both propylene, the reactant, and propylene oxide, the desired product, may influence the selectivity of this complex reaction system. Potential changes in catalytic reactivity and selectivity caused by water addition are discussed in terms of a general catalytic reaction rate law. This revised version was published online in July 2006 with corrections to the Cover Date.     

环氧丙烷生产的技术进展

分析环氧丙烷生产技术发展趋势:氯醇法对环境不友好,虽仍在改进,最终难免被淘汰;环氧丙烷联产苯乙烯或叔丁醇法因苯乙烯叔丁醇有市场需求产能正在扩大,但因对原料要求高而受到限制;预测过氧化氢氧化工艺将会加快工业化。     

Solid-state nuclear magnetic resonance of the PA6/PC,PA6/PPO,and PA6/PC/PPO blends

The effect of mixing time is very important to plasticization and/or occurrence of chemical reaction between polyamide 6/poly(propylene oxide), polyamide 6/polycarbonate, and polyamide 6/polycarbonate/poly(propylene oxide) blends. The systems were investigated through solid-state carbon-13 cross-polarization magic angle spinning with variable contact time in the NMR experiment. In the systems, polycarbonate can prevent the antiplasticization effect already observed in the polyamide 6/poly(propylene oxide) blend. Therefore, it was verified that the addition of polycarbonate in the polyamide 6/poly(propylene oxide) system causes a hardening of the blend. This fact can be attributed to the restriction of the mobility of the NH group, probably influenced by the type of interaction that occurs in the polyamide 6/polycarbonate/poly(propylene oxide), due to the effect of poly(propylene oxide), which can be act as an interfacial agent promoting a better interaction between polyamide 6 and polycarbonate. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 129–133, 1998