沉淀铁挤条F-T合成催化剂WGS反应考察

采用固定床积分反应器， 在工业条件下 （５００ ｈ－ １， １ ＭＰａ～２．６ ＭＰａ）， 对挤条Ｆｅ－Ｃｕ－Ｋ工业催化剂进行了水煤气变换反应性和ＦＴ反应产物分布链增长几率的考察． 在稳态下， 保持一定的轴向温度分布， 求得宏观动力学方程， 与实验数据符合较好．     

Fe1—xO基氨合成催化剂还原性能的研究

具有维氏体（Ｗｕｓｔｉｔｅ）相结构的Ｆｅ１－ｘＯ基催化剂低温还原性能明显优于传统的Ｆｅ３Ｏ４基催化剂，其还原诱导期短。在干气氛条件下，Ｆｅ１－ｘＯ基催化剂还原动力学可用“壳－核模型”描述。空速和温度明显影响Ｆｅ１－ｘＯ基催化剂的活化，而压力影响不如它们显著。在工业还原过程中宜采用“低温、低压、高空速、高氢”的操作原则     

SB—5型钴钼耐硫变换催化剂反应动力学的研究

本文对ＳＢ－５型钴钼耐硫变换催化剂进行了系统的动力学研究，获得了可信的本征动力学方程和催化剂的曲节因子，并在常压下测定了工业颗粒催化剂的宏观反应速率，所建立的内扩散效率因子模型的计算值与实验值相吻合。     

SB—5型钴钼耐硫变换催化剂反应动力学的研究

本文对ＳＢ－５型钴钼耐硫变换催化剂进行了系统的动力学研究，获得了可信的本征动力学方程和催化剂的曲节因子，并在常压下测定了工业颗粒催化剂的宏观反应速率，所建立的内扩散效率因子模型的计算值与实验值相吻合。     

乙烯催化氧乙酰化反应研究Ⅰ催化剂的评价和动力学

在连续的无梯度反应器上,分别对新型乙酸乙烯催化剂——国产ＣＴＶ－Ⅲ和进口ＫＲＶ－Ⅲ型催化剂进行了研究。在常压及１３５℃～１６０℃温度条件下,测定其活性和选择性,对催化剂进行评价,并籍此建立了原粒度催化剂的宏观动力学方程,为工业反应器的数学模拟及优化控制等提供基础数据     

乙苯脱氯催化剂的发展动态

通过对乙苯脱氯制苯乙烯工业催化剂演变过程的分析，认为近年催化剂组成已经历由Ｆｅ－Ｋ－Ｃｒ系列向Ｆｅ－Ｋ－Ｃｅ系列以及由高钾含量向低钾含量的过渡。催化剂制备工艺也有诸多改进，颗粒形状由传统圆柱形由齿轮柱形及三叶柱形等异型颗粒演变。关于催化活性本质的研究渐趋活跃，多数研究者认为活性相是Ｋ２Ｆｅ２Ｏ４，流失是催化剂在正常操作条件下逐渐老化的根本原因。     

QCS—04催化剂3.0MPa宏观反应动力学研究

采用内循环无梯度反应器,对工业原粒度ＱＣＳ－０４耐硫变换催化剂在３．０ＭＰａ下的宏观动力学进行了研究,测定３００～４８０℃温度范围内,不同组成原料气的变换反应速率。用非线性最小二乘法求得了变换反应幂函数型的宏观动力学方程。显著性检验及对工业变换反应器模拟的结果证明所得方程是可靠的。     

应用内循环无梯度反应器进行常压下变换反应宏观动力学研究

为实现工业变换反应器设计的模拟放大及设计、操作的最佳化,本文在研究中温变换B_(109)型催化剂本征动力学的基础上,采用内循环无梯度反应器,对工业原粒度中温变换B_(109)型催化剂在常压下进行了宏观动力学的研究,即对催化反应的内扩散过程进行深入研究。并运用电子计算技术,对实验数据进行回归整理,得到了宏观动力学经验方程,经工业变换炉核算,该宏观动力学方程具有良好的等效性。     

沸腾状况下苯氯化反应宏观动力学研究

采用半连续鼓泡反应器，在氯气通入量为０．０８４０．２１ｍｏｌ／（Ｌ反应液·ｍｉｎ）、催化剂三氯化铁浓度为５．７２×１０－４～２６６×１０－３ｍｏｌ／Ｌ、反应温度为７６～１２０℃的条件下，由实验数据回归出幂函数宏观动力学方程和双膜理论宏观动力学方程式，并由双膜理论宏观动力学方程分解出苯和氯苯的本征反应动力学方程。上述方程对于建立反应器数学模型、设计工业反应器以及苯氯化反应精馏技术应用于氯苯生产有一定的参考价值。     

乙烯催化氧乙酰化反应的研究：Ⅲ 失活催化剂的动力学 …

为预测新型乙酸乙烯催化剂－国产ＣＴＶ－Ⅲ和进口ＫＲＶ－Ⅲ型催化剂的失活性能,先将该两种催化剂经过相同的催速老化处理至一定程度。再在常压及１３６℃￣１６５℃温度下的连续的无梯度反应器上,分别对此两种失活催化剂进行动力学特性研究,并籍此建立了失活催化剂的宏观动力学方程。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。