查询词典 propane

The myristic-2-hydroxy-3-propane sulfonic acid sodium salt was synthesized from sodium bisulfite, epichlorohydrin, sodium phosphate and myristic acid. The influence factors of temperature, amount of catalyst, reaction time and reactant ratio on conversion were studied.

以亚硫酸氢钠、环氧氯丙烷、磷酸钠和肉豆蒄酸等为原料，合成了肉豆蒄酸－2-羟基－3-磺酸钠丙酯，探索了反应温度、催化剂、反应时间、反应物物质的量比等因素对合成的影响。

Typical results of the limits of superheat and su p er-depressurization for methane and propane are given,and the critical liquid st orage conditions that can lead to limits of super depressurization are analysed.

以 甲烷和丙烷为例给出了过热极限和过减压极限的典型计算结果，分析了可能使液体达到过减压极限的储存条件。

In this paper, a series of polysiloxanes crosslinked by tetraethyl orthosilicate, polyurethanes crosslinked by trimethanol propane, and polyurethane/polysiloxane IPNs were synthesized at the existence of catalyst at room temperature.

用FTIR研究了聚硅氧烷、聚氨酯和IPN的化学结构和固化反应动力学，用TG-IR联用技术研究了聚硅氧烷、聚氨酯和IPN的耐热性及在无氧条件下的热裂解产物、热分解反应动力学和热分解机理。

In this paper, a series of polysiloxanes crosslinked by tetraethyl orthosilicate, polyurethanes crosslinked by trimethanol propane, and polyurethane/polysiloxane IPNs were synthesized at the existence of catalyst at room temperature.

本论文室温催化合成了聚硅氧烷、聚氨酯阻尼弹性体、以及一系列不同结构和组成比例的聚氨酯/聚硅氧烷IPN体系，分析了聚硅氧烷、聚氨酯和IPN的力学性能和动态力学性能。

It is a propane gas injected, low emission engine with an oxy catalytic converter.

这是一个丙烷气体注入，低排放引擎，具有氧催化转化器。

Deoxybenzoin(3) was prepareded by using the resorcinol and substituted phenylacetic as starting meterials in microwave-mediated.Then the compound(3) was reacted with acetic anhydride to produce(4).The compound(4) was hydrolyzed to convert compound(5) in the acid-mediated. The compound(5) was reacted with the 1,2-dibromo-ethane and 1,3-dibromo-propane in refluxed condition with acetone as solvent to give(6) or(7),respectively.Lastly,the title compounds were synthesized by refluxing(6) or(7) with 2-methyl-benzimidazole and potassium carbonate in acetone solution.

以取代苯乙酸和间苯二酚为起始原料，用微波辐射法合成脱氧安息香(3)，(3)与乙酸酐缩合生成2-甲基-7-乙酰氧基异黄酮(4)，(4)在酸性条件下水解生成相应的异黄酮(5)，化合物(5)分别与1，2-二溴乙烷和1，3-二溴丙烷反应生成(6)和(7)，化合物(6)和(7)再分别与2-甲基苯并咪唑偶合生成目标化合物。

The main objective of this research project is to modify the Methyl-Acetylene/propadiene selective hydrogenation reaction system of the No.3 Naphtha Cracker in CPC. The original gas phase reaction system was redesigned to a liquid phase reaction so that higher propylene selectivity was achieved and lower rates of propane and green oil were produced. To recover effectively the higher production of valuable propylene from the reaction system, the following fractionator was also redesigned.

本研究之目的在於修改中油公司三轻工场老旧的甲基乙炔／丙二烯选择性氢化气相反应系统，使成为液相反应系统，藉由液相反应的优异性，提高由MAPD氢化得到丙烯之选择率，同时降低丙烷及绿油产率，以增加丙烯产率，另亦修改丙烯精馏系统，以提升蒸馏塔提纯之效率。

Mono(2-hydroxy propyl)phosphate was synthesized from 1, 2-epoxy propane and phosphoric acid in the propanone solvent under the conditions of reaction temperature 30 ℃, reaction time 2 h.

摘 要：以环氧丙烷、磷酸为原料合成了磷酸单( 2-羟基丙基)酯，并以磷酸单(2-羟基丙基)酯和三氧化二锑为原料合成了磷酸单(2-羟基丙基)酯锑。

Two kinds of mathematical models have been established for propane dehydrogenation to propene in plug flow and multistage well mixed flow membrane reactor respectively.

建立了模拟实验室膜反应器的两种数学模型：活塞流模型和多级全混流模型。

On the basis of calculated results, the experiment was carried out to remove NO by propane and propene with pulse corona discharge and amonia.

根据计算结果，以丙烷和丙烯为例，利用脉冲电晕加氨分别与丙烷和丙烯协同进行了脱除NO的实验研究，得出了最佳工艺参数。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。