查询词典 solvent
- 与 solvent 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Anisaldehyde was synthesized from p-hydroxybenzaldehyde with dimethyl carbonate by microwave irradiation under phase transfer catalyst tetrabutylammonium bromide, The effect of power, time, solvent and catalyst of reaction on yield were researched.
以四丁基溴化铵为相转移催化剂,采用对羟基苯甲醛和碳酸二甲酯为原料,微波辐射下合成大茴香醛。考察了反应溶剂、功率、时间和催化剂对反应产率的影响。
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Excessive anisole is used instead of the classical polar solvent,which leads to clean reaction,simple operation and easy after-treatment.
反应中过量的苯甲醚可充当溶剂,替代传统的极性溶剂,使反应操作简单、工艺清洁,易于后处理。
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To study the performance of inorganic composite catalyst for the SPC oxidation of p-methyl anisole, Cu2-Co2-KBr is used as catalyst of sodium percarbonate oxidation for p-methyl anisole synthesized by paracresol methylating. Effect of reaction conditions, such as the factors of catalyst composition, catalyst quantity, solvent, reaction temperature and time on oxidation of p-methyl anisole, is investigated.
研究了无机复合催化剂催化SPC氧化对甲基苯甲醚的反应性能:以Cu2-Co2-KBr为催化剂,利用过碳酸钠氧化对甲酚甲基化产物对甲基苯甲醚,系统研究了催化剂组成比例、催化剂用量、溶剂、反应温度、反应时间等因素对反应的影响。
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In order to improve the efficiency of the system, we use anisole/toluene/ TBP as the solvent, in which the concentration of EAHQ is improved to 1.0 mol/L during the recycles of EAQ/EAHQ redox system.
二甲苯/TBP N门,体积比)溶剂中,EAHQ的饱和浓度为 0石2 mol几,用于丙烯环氧化时丙烯相对于 EAHQ的转化率为 96%,生成环氧丙烷的选择性为 88%。
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But the concentration of Li2CO3 remains nearly consistent and a new component, CH3OLi, is found in SEI. It can be concluded from these results that anisole reacts with the reduction product of EC and DEC, RCO3Li, in the first process of Li+ intercalating into the carbon electrode. The obtained CH3OLi is helpful in building up a more effective and stable SEI of the carbon electrode, reducing the cointercalation of solvent molecular. All these contribute to the improvement of the cycle performance of lithium-ion battery.
根据以上分析结果,提出了苯甲醚对锂离子电池循环性能的影响机理:在Li+嵌入石墨电极的初次过程中,苯甲醚和EC、DEC的还原分解产物RCO3Li发生基团交换反应,生成CH3OLi,该产物能有效提高石墨电极表面SEI的稳定性,减少锂离子嵌入石墨过程中引起的溶剂分子共嵌入,从而改善电池的循环性能。
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The method was established to analysis the oxine-copper with ion pair of antiphase HPLC and Ultrasonic-assisted solvent extraction methods.
建立了喹啉铜原药的超声波辅助溶剂提取-反相离子对高效液相色谱法的分析方法。
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This article mainly established the analysis method to extract the oxine-copper residues in cucumber and soil with ion pair of antiphase HPLC and Ultrasonic-assisted solvent. This method mainly uses XBridge C18 column and UV detector by using waters phase of phosphatic buffered solution/acetonitrile (60:40, by vol) as mobile phase with 0.8 mL/min flow ratio and UV detection at 250 nm. The residue time was 4.71 minute. Accuracy, precision, and sensitivity of the method all satisfy the demands of pesticide residue analysis.
建立了黄瓜和土壤中喹啉铜的超声波辅助溶剂提取-反相离子对高效液相色谱法的残留分析方法,该方法使用XBridge C18色谱柱和可变波长紫外检测器,并以水相磷酸盐缓冲溶液-乙腈(体积比为60:40)作流动相;流速为0.8 mL/min;检测波长为250 nm;保留时间为4.71 min;该方法的准确度、精密度及灵敏度均满足农药残留分析的要求。
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The ultrasonic-assisted solvent extraction and quantitative analysis of the oxine-copper residues in soil with ion pair of antiphase HPLC was established. This methods mainly uses XBridge C5 column and UV detector by using waters phase of phosphatic buffered solution/acetonitrile (60:40, by vol) as mobile phase with 0.8 mL/min flow ratio and UV detection at 245 nm. The residue time was 4.72 minute. The linear correlation of this method was 0.9987. The recovery rate was 76.2 to 108.7%. Comparatively standard deviation was 0.6 to 3.37%. The detection limits of method was 0.05 mg/kg.
建立了土壤中喹啉铜的超声波辅助溶剂提取-反相离子对高效液相色谱法的残留分析方法,该方法使用XBridge C18色谱柱和可变波长紫外检测器,并以水相磷酸盐缓冲体系-乙腈(体积比60:40)作流动相;流速为0.8mL/min;检测波长为245nm;保留时间为4.72min;线性相关系数为0.9987,回收率在76.2%~108.7%之间,相对标准偏差在0.6%~3.37%之间,对土壤的最低检出限为0.05mg/kg。
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Contact angle between test solvent and filler or polymer matrix by the surface analysis.The surface tension, polar force parameter of the surface tension, apolar forceparameter of the surface tension and polar fraction had been calculated.
通过表面分析的方法,测出参比液在基体与填料表面的接触角e,计算出其表面张力Ys、表面张力的极性分量丫气、非极性分量Y as。
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In this dissertation, i has used inverse microemulsions technique to synthesize nano-magnetic particles . This method made nanometer sized cages formed by dissolving surfactant molecules in an apolar organic solvent. The chemical reactions were carried out inside the cages to synthesize nanoparticles. Because the growth of the naoparticles are limited in the cages, the particles were nanometer sized particles.
论文中本人以逆微乳化法去合成磁性奈米粒子,这个方式主要是利用在非极性有机溶液当中使溶解的界面活性剂构成一个奈米级的空洞,控制化学反应在空洞中反应合成粒子,也因为粒子生成受到空洞的限制,以致生成的粒子为奈米粒子。
- 相关中文对照歌词
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- Keep Ya Head Up
- Lesson 6: The Lecture
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- 推荐网络例句
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I'm not an actor. I'm a professor of paleontology.
我不是演员,我是古生物学教授
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Spider Network Web site that is a very image of the name.
网络蜘蛛即Web Spider,是一个非常形象的名字。
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The rain drumming on the corrugated iron roof kept me awake last night.
雨点敲击着房顶的波纹铁使我昨夜未眠。