烯烃

It is thus concluded that the methanol to olefin reaction cannot follow the oxonium ylide mechanism.

因此，甲醇制烯烃催化过程不可能遵循氧鎓叶立德机理。

Eight kinds of 2-benzimidazolylalkylene derivatives in polyphosphoric acidhave been synthesized by multi-power bands microwave irradiation technique,starting from corresponding cinnamic acid compounds and they were characterized by~1H NMR,(~13C NMR and MS respectively.

以8种肉桂酸衍生物和邻苯二胺为原料，在多聚磷酸中，采用分段式微波辐射方法合成了8种2-苯并咪唑基烯烃衍生物，并通过1H NMR、13C NMR和MS进行了表征。

Even carbon number alkenes, phthalic esters and nitrogen heteroatom-containing components were detected in the elution fractions, while such components were not detected without silica gel column separation, indicating that preseparation is very important for increasing the sensitivity of GC/MS analysis.

各洗脱馏分用GC/MS分析，其可测成分与直接检测相比，多检测出偶碳烯烃、邻苯二甲酸酯类和含氮化合物等，表明合适的预分离对提高GC/MS分析的灵敏度非常重要。

The pyridinium salts was transformed by the base to 1-hydroxy or 3-hydroxy-quinolizinylides, which undergo 1,3-dipolar cycloadditionreaction with alkenes,and then aromatizated to cycl[3,3,2]azinone in thepresence of oxidant.

实验证明，这是一个连续进行的多步反应：2-羰基吡啶鎓盐在反应中先生成1-羟基或3-羟基喹嗪叶立德，然后与烯烃起1，3—偶极加成反应，最后在氧化剂作用下脱氢芳构化而生成Cycl[3，3，2]azinone。

Results indicated that the existence of olefins in the reformate raffinate was the major factor engendering the deactivation of 5A molecular sieve.

结果表明，重整抽余油中的烯烃是引起分子筛结焦失活的主要因素。

The structures of various SAPO and their suitable catalytic reaction systems were described in this paper.The application possibilities of SAPO as catalysts in the conversion of methanol to light olefins or supports of catalysts for the automotive exhaust control were also prospected.

在此论述了SAPO的结构类型及适用的催化反应体系，并对它作为甲醇转化制低碳烯烃过程催化剂和汽车尾气净化催化剂载体的应用前景作了展望。

The appearance of the synthetic microspherical catalyst containing the SAPO molecular sieves is complete, the synthetic microspherical catalyst has a multi-level pore structure, and can be used for the reaction of producing alkene by converting an oxygen compound.

合成的含SAPO分子筛的微球催化剂形貌完整，且具有多级孔道结构，可以用于含氧化合物转化制烯烃反应。

SAPO 34 molecular sieve ; composite template ; hydrogen fluoride ; triethylamine ; methanol ; olefin

SAPO-34分子筛；复合模板剂；氟化氢；三乙胺；甲醇；烯烃

The method adopts the following steps: after mixed, phosphorus source, silicon source, aluminum source, an organic template agent, water and a precursor of the SAPO molecular sieve are hydrothermally crystallized for at least 0.1 hour at the temperature ranging from 110 to 260 DEG C to obtain the SAPO molecular sieve; wherein, the preparation method for the precursor of the SAPO molecular sieve has the following steps:, the molar ratio is 0.03 to 0.6 R:(Si0.01 to 0.98: Al 0.01 to 0.6: P0.01 to 0.6): 2 to 500 H2O; wherein, R stands for mixture solution of raw materials which is blended by the phosphorus source, the silicon source, the aluminum source, the an organic template agent and water of the template agent;, the mixture solution of raw materials prepared in step reacts at the temperature which is at least 50 DEG C lower than the crystallization temperature for at least 0.1 hour.

本发明通过采用包括以下步骤：将磷源、硅源、铝源、有机模板剂、水和SAPO分子筛前驱体混合后在110～260℃的温度下水热晶化至少0.1小时获得SAPO分子筛；其中SAPO分子筛的前驱体的制备包括以下步骤：将摩尔配比为0.03～0.6R∶(Si0.01～0.98∶Al0.01～0.6∶P0.01～0.6)∶2～500H 2 O，式中R代表模板剂的磷源、硅源、铝源、有机模板剂和水混合成原料混合液；将步骤制备的原料混合液在低于晶化温度至少50℃的温度下反应至少0.1小时的技术方案较好地解决了该问题，可应用于含氧化合物制烯烃催化剂的制备过程。

The results show: in a specific concentration range, the solubility in neutral solution of SOL, as well as the surfactivity, the ability to reduce ITF and the wettability on the condition of non- alkali are better than the lignosulfonate in market.While using as sacrifice agent, the modified lignosulfonate can reduce 60% of the mahogany sulfonate and 50% of the α-alkene sulphonate which both are adsorbed on the oil sand surface.

结果表明在一定浓度范围内，SOL在中性溶液条件下的溶解性、在无碱条件下的表面活性、降界面张力能力、对岩石的润湿性效果优于市场木质素磺酸盐产品；作为牺牲剂使用时，改性磺化木质素能减少石油磺酸盐在油砂表面吸附的60%，减少α-烯烃磺酸盐在油砂表面上吸附的50%。

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。