anhydrous solvent
英
美
网络 无水溶剂
双语例句
- The titration of water is usually carried out with the use of anhydrous methanol as the solvent for the test specimen;
水分的滴定通常是用无水甲醇作待测物质的溶剂来完成的。 - It turns out that experiment result with anhydrous pyridine as solvent is closer to weightlessness method. So it is better to determine the water in erythromycin with anhydrous pyridine solvent.
结果表明，以无水吡啶为溶剂测定的结果更接近干燥失重法的测定结果，在测定红霉素碱的水分时，以选择无水吡啶为宜。 - We used the anhydrous benzene as solvent, and made use of ( PPh3) PBr2 as halo-substituted reagent ( the bromine was added drop wise into the system), and selectively obtained the product 2-butyne-1,4-dibromo.
我们用无水苯为反应溶剂，以温和的（PPh3）PBr2作为卤代试剂（冰浴下液溴逐滴滴入PPh3苯溶剂中当场生成）卤化2-丁炔-1,4-二醇，选择性合成得到2-丁炔-1,4-二溴衍生物。 - Target compounds have been synthesized by condensation of the amino heterocycle with isocyanates in absolutely anhydrous and aprotic solvent.
利用异氰酸酯与氨基杂环化合物在无水非质子溶剂中发生亲核加成反应，制得目标化合物。 - Macroporous St-DVB copolymers were post-crosslinked with anhydrous iron(ⅲ) chloride as catalyst in the presence of the solvent of dichloroethane.
采用工业和实验室合成的高交联大孔苯乙烯-二乙烯苯共聚物，对其以三氯化铁为催化剂，在二氯乙烷溶剂中的后交联反应进行了研究。 - Methods To adopt the water were determined by Karl Fisher Solution ( pyridine-free), and anhydrous methanol: pyridine ( 1 ∶ 1) act solvent.
方法采用不含吡啶的费休氏试液、以无水甲醇：吡啶（1∶1）为溶剂测定依托红霉素颗粒的水分。 - Method on extraction and purification of tea saponin by using anhydrous alcohol as solvent and cholesterol as purifying agent was reported.
以无水乙醇为提取剂并采用改进的胆甾醇纯化法，得到了精制茶皂素。 - Diethyl phosphite was continuously synthesized from phosphorus trichloride and anhydrous alcohol without any solvent in a special glass apparatus.
在特制的玻璃仪器内，三氯化磷与无水乙醇于无溶剂的条件下连续合成了亚磷酸二乙酯。 - The results indicated that anhydrous ethyl alcohol was the optimum solvent.
比较了不同提取剂的提取效果，结果表明以无水乙醇为最佳。 - Nanocrystalline SnO_ ( 2) powders had been synthesized by the citrate-gel method using SnCl_ ( 2) and citric acid as precursors and anhydrous ethanol as solvent.
以SnCl2和柠檬酸为前驱物，无水乙醇为溶剂制备了纳米级SnO2。 - In the meanwhile, the effects of varied acids for protecting third carbonyl group were investigated. Through the trial and error, the mixture of anhydrous alcohol/ petroleum benzine is the good solvent of target molecule recrystal.
考察了酸性对保护3位羰基的影响，确定了无水乙醇/石油醚是目标分子重结晶的最佳溶剂体系。 - The factors effecting the properties of carboxyl terminated liquid polybutadiene synthesized by free radical solution polymerization with pentane diacid peroxide as initiator and anhydrous ethanol or acetone as solvent were studied. The microstructure was characterized by IR.
以过氧化戊二酸为引发剂，无水乙醇或丙酮为溶剂，采用自由基型溶液法合成了端羧基聚丁二烯，并用IR对聚合物的微观结构进行了表征。 - By using anhydrous ethanol as solvent, the adsorption equilibrium of tocopherols and tocotrienols in methyl esterification products on modified adsorption resin was determined by static method.
选用合适吸附树脂，以无水乙醇为溶剂，用静态吸附法测定了脱臭馏出物的甲酯化物中的混合生育酚在改性吸附树脂上的吸附等温线。对吸附特性做了初步探索。 - The Ni/ Al_2O_3, Ni/ La-Al_2O_3, Ni/ MgO and Ni/ TiO_2 catalysts were synthesized by the impregnation method with the anhydrous ethanol as the solvent. Their catalytic activities towards the NH_3 decomposition reaction were evaluated in a continuous-flow reactor under the atmospheric pressure.
选用无水乙醇为溶剂，采用浸渍法制备了纳米结构的Ni/Al2O3、Ni/La-Al2O3、Ni/MgO和Ni/TiO2催化剂，并在常压连续微反装置上分别对其氨分解反应活性进行评价。 - The butyl stearate/ bentonite composite PCM was prepared by a liquid intercalation method using anhydrous ethanol as a solvent.
以无水乙醇为溶剂，采用液相插层法制备出了硬脂酸丁酯/膨润土复合材料。 - Sodium cyanate was prepared from reactants& urea and anhydrous sodium carbonate through liquid-solid chemical reaction method, in the solvent of N, N-dimethlformamide ( DMF).
使用液固化学反应法，以尿素和无水碳酸钠为原料，在N，N-二甲基甲酰胺（DMF）溶剂的反应介质中，制备了氰酸钠产品。 - Solid acid alchlor catalyst was prepared from anhydrous aluminium trichloride through liquid solid solvent method, with pretreated bentonite as support.
以无水三氯化铝为原料，并以处理过的膨润土为载体，采用液固溶剂法制备固体酸催化剂。 - The control group is water. The main results are as follows: 1. Using anhydrous ethanol as a solvent for extraction process optimization. Conclusion: ultrasonic wave extraction method soaking extraction method cold-soaked extraction method. 2.
其主要结果如下：1、以无水乙醇为溶剂进行提取方法比较，实验得出：超生波提取法效果温浸提取法效果冷浸提取法效果。 - Usually, this type of reaction is performed in anhydrous organic solvent.
通常，这类反应是在无水的有机溶剂中进行。