ethyl ether的例句大全

Research on Synthesis of Ethyl Tert-butyl Ether by HPWA/ SiO_2 Catalyst

HPWA/SiO2催化乙基叔丁基醚合成反应的研究

the results showed that the volatile compositions in liquid milk product contained mostly aldehyde, alcohol, isoamyl alcohol, ethyl formate, acetic ether, isobutyl acetate, isoamyl acetate, n-butyl acetate.

结果表明液态奶制品的挥发性成分主要有乙醛、乙醇、异戊醇、甲酸乙酯、乙酸乙酯、乙酸异丁酯、乙酸异戊酯和乙酸正丁酯等。

The results show that: there are many modifiers can improve the humidity resistance of sodium silicate sand, including polyvinyl alcohol, disodium hydrogen phosphate, xylitol, lithium carbonate, polyethylene glycol, polyurethane, ethyl silicate, silicon hydride coupling agent and diethylene glycol ether.

实验结果表明：聚乙烯醇、磷酸氢二钠、木糖醇、碳酸锂、聚乙二醇、聚氨酯、硅酸乙酯、硅烷偶联剂和二乙二醇乙醚等改性剂改性水玻璃均能提高微波硬化水玻璃砂的抗吸湿性。

catalytic performance of different zeolites for synthesis of ethyl tertiary butyl ether

不同沸石分子筛对乙基叔丁基醚合成反应的催化性能

vapor-liquid equilibrium data of ethyl acetate-isopropyl ether and ethyl acetate-tetrahydrofuran systems at atmospheric pressure

乙酸乙酯-异丙醚和乙酸乙酯-四氢呋喃物系常压汽液平衡数据的测定

Ethyl tert butyl ether is synthesized from ethanol and tert butyl alcohol by reaction distillation.

以乙醇和叔丁醇为反应物,采用反应精馏法合成了乙基叔丁基醚.

Synthesis of Ethyl Tert-butyl Ether by Niobic Acid introduce the butyl group into a chemical compound.

酸处理的铌酸催化合成乙基叔丁基醚把丁基引入化学中的化学物。

Production of Ethyl Tert-Butyl Ether Using Low-Grade Ethanol

低浓度乙醇制乙基叔丁基醚

Etherification of ethanol and tert-butyl alcohol to ETBE ( ethyl tertiary butyl ether), using USY zeolite midified by hydrofluoric acid as the catalyst, was studied.

以氢氟酸改性USY为催化剂，乙醇和叔丁醇为原料，合成乙基叔丁基醚（ETBE）。

The antifeedant ratio of ethyl acetate extract to Spodoptera litura ( Fabricius) was higher than that of petroleum ether extract and normal butanol extract.

乙酸乙酯对斜纹夜蛾的拒食率都高于石油醚萃取物和正丁醇萃取物，三种不同萃取物拒食率次序是：乙酸乙酯正丁醇石油醚。

The product in acetone, glacial acetic acid soluble in ethanol or ethyl acetate dissolved in chloroform or ether, slightly soluble;

本品在、冰醋酸中易溶，在乙醇或醋酸乙酯中溶解，在氯仿或乙醚中微溶；

study on the thermally reversible covalent crosslinking of ethyl acrylate/ allyl glycidyl ether copolymer

丙烯酸乙酯/烯丙基缩水甘油醚共聚物的热可逆共价交联

Isobaric Vapor-Liquid Equilibrium of Multicomponent Systems of Water, Ethanol, tert-Butyl Alcohol, Ethyl tert-Butyl Ether

水-乙醇-叔丁醇-乙基叔丁基醚多元物系的等压汽液相平衡

After that, extracting by petroleum ether, ethyl-acetate and normal butanol orderly and finally isolating a compound from the crude extracts by the separation methods and technological means of column chromatography, thin-layer chromatography ( TLC) and recrystal.

用石油醚、乙酸乙酯、正丁醇依次萃取。采用柱色谱法、薄层色谱法、重结晶等分离方法和技术手段，从粗提物中提取分离出1个化合物。

Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.

采用无水乙醇、乙醚、丙酮及水作溶剂，对四川汉源花椒作了精油提取研究。

Cinnamon twig was identified with petroleum ether ( 60-90)-ethyl acetate ( 17:3) as developer and dinitrophenylhydrazine ethanol solution as coloration using silica gel G.

桂枝：采用硅胶G板，以石油醚（60-90℃）&醋酸乙酯（17：3）为展开剂，显色剂为二硝基苯肼乙醇试液。

ResultsThe petroleum ether fraction and ethyl acetate fraction from the aqueous and ethanol extracts of Hehuanhua can significantly shortened immobility time of mice in the forced swimming test.

结果合欢花醇提物与水提物的石油醚和醋酸乙酯萃取部位与对照品安拿芬尼类似，均能显著缩短小鼠游泳的不动时间。

Ethyl acetate were more suitable than ether as a solvent in the reprocess of the transesterification reaction.

在较佳反应条件下产率达到91.2%。在酯交换反应后处理过程中选用乙酸乙酯代替乙醚做溶剂，提高了合成过程的可操作性。

Ethyl tert-butyl ether ( ETBE) was fund that a new rapidly dissolving agent yet of cholesterol gallstones in the recent years.

甲基叔丁醚是目前最有效的胆固醇结石直接溶解剂，但在临床应用时有很多缺点。

Samples were extracted with ethyl acetate and were methylated with BF3 ether/ methanol.

样品经提取后用三氟化硼-乙醚/甲醇，甲酯化处理。