查询词典 olefin

Results showed that using aluminum trichloride combined catalyst under the conditions of a catalyst dosage of 5%, a benzene/olefin molar ratio of 8, a reaction temperature of 60℃ and a reaction time of 6 h, the yield of alky-benzene reached 19.6% and the quality of the obtained alkylate was significantly improved as compared with coker gas oil.

结果表明，采用三氯化铝复合催化剂，在催化剂质量分数为5%、反应温度60℃、苯烯摩尔比为8、反应时间6 h的条件下，烷基苯收率达到19.6％，烷基化油的质量明显优于焦化柴油。

Changes to FCC gasoline cutpoints and the possibility of blending by dilution (adding components such as ethers or alkylate) can be used to meet a sulfur or olefin specification for individual gasoline grades if a preliminary blend is already close to the specification and the refinery desires to increase total gasoline production.

对FCC 汽油cutpoints 的变动和混和的可能性由稀释(增加组分譬如以太或烷基化)可能使用符合各自的汽油等级的硫磺或烯烃规格如果初步混合已经是紧挨规格和精炼厂渴望增加总汽油生产。

Linear alkyl benzenes and linear alkyl dimethyl benzenes, prepared by the alkylate reaction of linear alpha olefin with benzene or dimethyl benzene which were sulfonated by chlorosulfonic acid and then neutralized to produce linear alkyl benzene sulfonates and linear alkyl dimethyl benzene sulfonates.

本文以一定链长的直链α-烯烃分别与苯和混合二甲苯为原料制备了直链烷基苯和烷基二甲苯，经氯磺酸磺化，中和可得到具有一定链长的直链烷基苯磺酸盐和直链烷基二甲苯磺酸盐。

In the paper, the research evolvement of electrocarboxylation from carbon dioxide with olefin, alkyne, and ketones in near decades was summarized, these reactions were convenient ways to synthesize some valuable pharmaceutical precursor and intermediates in organic synthesis.

文章综述了近几十年来二氧化碳与烯烃化合物、炔烃化合物以及酮类化合物的电羰基化反应的研究进展，这些反应是合成一些有价值的药物前驱体或是有机合成中间体的简便方法。

This was attributed to its low acidity, which suppressed the aromatization and cracking reactions. Moreover, the olefin content in gasoline was significantly increased.

而且产物组成中烯烃的含量有明显上升，因此汽油的辛烷值仍能保持在较高的水平，没有因芳烃含量减少而降低。

Toward this end, the olefin 51 was treated with cyanogen azide and, indeed, produced the ring expanded ketone 52

为了证明这一看法，他用氰化迭氮处理烯烃(51)就得到扩大的环酮。

It is indicated that 35USD/bbl of oil price is the competitive key point for olefin project from naphtha,coal and natural gas.

指出在考虑融资方案影响的情况下，原油价格35美元/bbl为煤、天然气制烯烃项目与石脑油制烯烃项目相竞争的节点。

According to reaction characteristics of producing gasoline with high olefin by Daqing raw material and converting butylene to propylene, MMC-2 and the catalyst for maximizing yield of propylene developed by Lanzhou petro-chemic academe are used to perform trial study considering reaction conditions.

针对大庆催化原料、大庆原料经一段转化生成的高烯烃含量汽油和丁烯转化生成丙烯的反应特点，结合两段工艺技术所能提供的反应条件，选择MMC-2和兰州石化研究院开发的多产丙烯催化剂分别进行实验室的中试评价。

Geographically, the study includes a broad overview of all major regional markets as well as a breakdown all types of wax including mineral waxes(petroleum waxes, montan, ozocerite),synthetic waxes(Fischer-Tropsch, Polyethylene,α-olefin, polypropylene), animal waxes and vegetable waxes(soy, palm, carnauba, candelilla, jojoba, etc).

公司对未来全球蜡行业发展较广泛的研究后做出的总结。

Studies on olefin-coordinating transition metal carbene complexes II.

含烯烃配体的过渡金属卡宾配合物的研究II。

They experience feelings deeply and intensely, and their emotions are often mercurial.

他们的感情深刻而强烈，情绪善变。

Surrounded with or as if with a rampart.

用城墙围绕的用城墙围绕的或类似于为城墙围绕的