烯烃

Influences of reaction temperature, hydrogen pressure, space velocity and hydrogen/oil ratio were investigated and optimum condition was obtained.

研究了加氢精制的工艺条件，考察了反应温度、氢压、体积空速和氢油比对聚α-烯烃合成基础油加氢效果的影响，确定了最佳的加氢精制工艺。

Seven major methods and their reaction characteristics for the synthesis of primary vicinal diamines starting from epoxides, and alkenes etc.

详细综述了从环氧化合物、烯烃等为起始原料合成一系列一级邻二胺的七条主要路线，并比较了各条反应路线的特点。

The present invention relates to a thermoplastic interpolymer product comprising an alpha -olefin interpolymerized with at least one vinyl or vinylidene aromatic monomer and/or at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene aromatic monomer and, in at least one aspect, is characterized as having substantially synergistic thermal properties.

本发明涉及一种包含与至少一种乙烯基或亚乙烯基的芳族单体和/或至少一种受阻的脂族或环脂族的乙烯基或亚乙烯基芳族单体共聚的α－烯烃热塑性共聚体产物，及至少一方面，其特征为具有实质协同热性质。

The bio-oil was composed of acetic acid, hydroxyacetaldehy, acetol, levoglucosan, furaldehyde, and a small quantity of phenols.

结果表明，热解温度为460~520℃时热解油产率最大，主要有醋酸、羟基乙醛、羟基丙酮、左旋葡聚糖、糠醛，油热值为17.0MJ.kg-1；热解气主要为CO2和CO，还含有少量H2、CH4和C2~C4的烯烃。

The resin composition for a platable substrate of the present invention comprises 100 parts by weight of a resin composition comprising 10 to 60% by weight of a graft copolymer prepared by graft polymerization of a rubbery polymer (A1) and a monomer component (A2) containing an aromatic alkenyl compound monomer unit and a vinyl cyanide compound monomer unit and 40 to 90% by weight of the other polymer provided that the total amount of the components (A and is 100% by weight, and 5 to 40 parts by weight of a phosphate ester flame retardant having a molecular weight of more than 326 or 2 to 40 parts by weight of a red phosphorus flame retardant.

本发明涉及一种镀覆基材用树脂组合物，其特征在于，该树脂组合物是在100质量份的树脂组合物中，混合5～40质量份的分子量超过326的磷酸酯系阻燃剂或2～40质量份的红磷系阻燃剂形成的物质，其中树脂组合物由10～60质量％的接枝共聚物和40～90质量％的其它聚合物组成(A+＝100重量％，接枝共聚物通过在橡胶质聚合物(A1)上接枝聚合含有芳香族烯烃化合物单体单元和氰化乙烯基化合物单体单元的单体成分(A2)得到。

Homogeneous catalytic oxidations of organic substrates such as alkane and alkene catalyzed by m-oxo-bismetalloporphyrins and flexible alkoxyl oxygen linked-bismetalloporphyrins were introduced,and the catalytic mechanism of these two bismetalloporphyrins,along with the possible synergetic catalysis mechanism of binuclear central metal were discussed.

主要介绍了μ-氧代双核金属卟啉和以柔韧烷氧链相连的双核金属卟啉作为仿酶催化剂在均相催化烷烃、烯烃等有机底物氧化方面的研究进展，并对这两类双核金属卟啉的催化机理、金属双核的协同催化作用机理作了论述，最后展望了双核金属卟啉仿酶催化剂的研究前景。

For low molar ratios of Al/Zr, a hypsochromic shift of the initial catalyst absorption band, corresponding to the monomethylation of the catalyst, was observed. Further addition of AlEt2Cl was accompanied by a continuous bathochromic shift of the maximal wavelength corresponding to the formation of more dissociated ionic active species. Then, there would be a coordination of monomer to the ionic active species.

结果表明，无论是AlEt_2Cl还是MAO，少量的助催化剂首先使催化剂发生单烷基化反应，主催化剂金属中心的最大吸收峰波长发生蓝移，而当助催化剂量进一步增加时，金属中心的最大吸收峰波长红移，单烷基取代的催化剂被大量的助催化剂夺去电子成为缺电子的阳离子活性中心，以便烯烃单体的配位插入。

The combined TG-MS analysis showed that the gas products of the thermal decomposition of silver behenate were carbon dioxide,water,hydrogen,acetylene and some small molecule alkenes.

热重-差热分析-质镨联用的分析结果表明，山嵛酸银热分解的气态产物为二氧化碳，水，氢气，乙炔及一些小分子烯烃。

During the second transition about 231°C, a structural change took place, which corresponding to decomposition of silver behenate. The major thermal decomposition products are silver nanoparticles and behenic acid. The gas products from thermal decomposition of silver behenate were detected by MS. Carbon dioxide was first emerged, subsequently water, hydrogen, acetylene and some small molecule alkenes appeared.

采用MS对山嵛酸银在整个热分解过程中所释放出的气体产物的跟踪检测发现，首先是二氧化碳气体的放出，接着是氢气和水，随着温度的进一步升高，又伴随着乙炔和一些小分子的烯烃产生，当温度进一步升高到500℃左右时，被山嵛酸钝化的银纳米粒子逐渐失去了有机分子，最终的热分解产物为金属银。

RCM reactions of 49 and 50 are chosen to evaluate the catalytic performance ofthe complexes 46-48 because they are informative and simple to manipulate. The resultsindicated that ruthenium benzylidene complexes 46 and 48 possess significant thermalstability and cyano group tolerance.

由于烯烃49、50的闭环交互置换反应简单、清晰，故用来考察新钌卡宾配合物的催化性能，结果表明配合物46、48具有良好的热稳定性及耐氰基性能。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。