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potassium hydrate
相关语句
  氢氧化钾
     ② n(1-(4-phenoxyphenoxy) propyl-2-ol)∶n(potassium hydrate)∶n(2-chloropyridine)=1∶3.5∶1.4;
     第二步:n(1-(4-苯氧基苯氧基)-2-丙醇)∶n(氢氧化钾)∶n(2-氯吡啶)=1∶3.5∶1.4;
短句来源
     The optimized conditions were: ① n(4-phenoxyphenol)∶n(1,2epoxypropane)∶n(potassium hydrate)=1∶3.0∶0.3; temperature,(40 ℃,) and reaction time,3.5 h. The yield of 1-(4-phenoxyphenoxy) propyl-2-ol reached 92.5%.
     确定了合成蚊蝇醚的最佳工艺条件为:第一步:n(4-苯氧基苯酚)∶n(环氧丙烷)∶n(氢氧化钾)=1∶3.0∶0.3,反应温度40℃,反应时间3.5 h,1-(4-苯氧基苯氧基)-2-丙醇收率可达92.5%;
短句来源
     Open-ring of PTFP in 1.5 mol/L potassium hydrate with hexadecyltrimethylammonium bromide as catalyst gave N-phenyl-2-carboxy-3,4,5,6-tetrafluorobenzoyl amine(PCTFBA) in 98% yield,and decarboxylation of PCTFBA with N,N-dimethyl-ethylolamine as solvent gave N-phenyl-2,3,4,5-tetrafluorobenzoyl amine(PTFBA) in 76% yield;
     在十六烷基三甲基溴化铵催化下,用1.5 mol/L氢氧化钾溶液开环PTFP,获得N-苯基-2-羧基-3,4,5,6-四氟苯甲酰胺(PCTFBA),收率98%;
短句来源
     Optimized condition obtained were: n (4-phenoxyphenol): n (1, 2-epoxypropane): n (potassium hydrate)=1: 3.0: 0.3, temperature: 40℃, reaction time: 3.5hrs. The yield of 1-(4-phenoxyphenoxy) propyl-2-ol can reach 93. 7%.
     n(4-苯氧基苯酚):n(环氧丙烷):n(氢氧化钾)=1:3.0:0.3,反应温度40℃,反应时间3.5h,1-(4-苯氧基苯氧基)-2-丙醇收率最高达93.7%。
短句来源
     Dibutoxy benzene was synthesized from hydroquinone and n-butyl bromide in the presence of potassium hydrate using methyl alcohol as a solvent with yield of 95% under the reaction temperature of 75℃~83℃ and the reaction time of 2.0h.
     用甲醇为溶剂 ,在氢氧化钾存在下由对苯二酚与溴丁烷在 75℃~ 83℃反应 2 h可直接合成 1 ,4 -二丁氧基苯 ,收率大于 95%。
短句来源
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  “potassium hydrate”译为未确定词的双语例句
     The New Technology of Industrial Production of Potassium Hydrate
     工业生产氢氧化钾新工艺
短句来源
     Delignification mechanism and kinetics of urea and potassium hydrate pulping of bagasse were studied by pulping experiments carried out under stable
     结果表明,脱木素过程可分为从室温升至130℃的初始脱木素阶段,130℃至最高温度150℃下保温180min的大量脱木素阶段,其中有48.74%的木素溶解在大量脱木素阶段,以及150℃下保温180min后的残余脱木素阶段。
短句来源
     The sample dissolving in a number of solution of potassium hydrate and potassium ferricyanide K3,and excessive potassium ferricyanide in the solution react with potassium iodide(KI)releasing iodine(I2)in acid solution. The iodine in above solution is titrated with standard solution of Na2S2O3,then the index of oxygen in blue tungsten oxide is calculated
     试样用KOH与一定量的铁氰化钾K3[Fe(CN)6]溶解 ,过量的K3[Fe(CN)6]在酸性溶液中与KI反应释放出I2 ,用标准Na2 S2O3 溶液滴定 ,从而计算出蓝色氧化钨中的氧指数。
短句来源
     1-(4-phenoxyphenoxy) propyl-2-ol was prepared from 4-phenoxyphenol, and 1, 2-epoxypropane. The effect of reaction temperature, reaction time, dosage of 1, 2-epoxypropane and potassium hydrate on 1-(4-phenoxyphenoxy) propyl-2-ol were investigated.
     以4-苯氧基苯酚,环氧丙烷为原料合成1-(4-苯氧基苯氧基)-2-丙醇,考察了物料比、反应时间、反应温度等因素对其收率的影响,得到最佳工艺条件。
短句来源
  相似匹配句对
     The New Technology of Industrial Production of Potassium Hydrate
     工业生产氢氧化钾新工艺
短句来源
     Application of Hydrate
     水合物应用
短句来源
     Hydrate Technology
     水合物技术
短句来源
     Penicillin V potassium
     青霉素V钾片
短句来源
     Study on Delignification Mechanism and Kinetics of Urea and Potassium Hydrate Pulping of Bagasse
     碳酰胺(尿素)和氢氧化钾蒸煮蔗渣脱木素机理及动力学研究
短句来源
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The method was based on collection of formic and acetic acids in solid sorbent tubes containing Red Chro-mosorb (40/60 mesh) impregnated with potassium hydrate. The analytes were desorbed with deionized water in an ultrasonic bath and analyzed via IC analysis. This method was applied successfully to determination of formic and acetic acids in the ambient air of Beijing and some areas in Guangdong and Guangxi provinces. In the case of 2.4 m3 sample gas volume, the minimum detectable concentrations were...

The method was based on collection of formic and acetic acids in solid sorbent tubes containing Red Chro-mosorb (40/60 mesh) impregnated with potassium hydrate. The analytes were desorbed with deionized water in an ultrasonic bath and analyzed via IC analysis. This method was applied successfully to determination of formic and acetic acids in the ambient air of Beijing and some areas in Guangdong and Guangxi provinces. In the case of 2.4 m3 sample gas volume, the minimum detectable concentrations were about 0.2 μg/m3 and 0.4μg/m3 for formic and acetic acids respectively.

本文研究了一种用红色担体经强碱(KOH)处理作为吸附的载体,去离子水超声浸取,离子色谱法分析测定大气中甲酸和乙酸的方法。对固体吸附管的特性进行了实验室内模拟及野外研究。在采样体积为2.4m~3时,该法对大气中甲、乙酸的最低检出限分別为0.2μg/m~3和0.4μg/m~3。利用此法,测出北京冬季大气中甲、乙酸浓度分別为0.5—2.0μg/m~3和0.6—8.7μg/m~3,广州白云山春季大气中甲、乙酸浓度分別为0.2—1.0μg/m~3和<0.4—2.0μg/m~3,桂林市大气中甲、乙酸浓度分别为0.37—0.4μg/m~3和0.5—1.1μg/m~3。

The processing technology of heliotropin has been developed on the basis of improving the traditional technology. The yield of isomerized safrole reaches 90% in the presence of the solution of potassium hydrate after 7 h reaction at 170℃. And the yield of heliotropin is 85% by the sodium dichromate method oxidation in the acid medium after 2. 5 h reaction at 45-60℃. So the total yield is as high as 56% ,which is higher by 4% compared with the common domestic levels. The quality of the product reaches,even...

The processing technology of heliotropin has been developed on the basis of improving the traditional technology. The yield of isomerized safrole reaches 90% in the presence of the solution of potassium hydrate after 7 h reaction at 170℃. And the yield of heliotropin is 85% by the sodium dichromate method oxidation in the acid medium after 2. 5 h reaction at 45-60℃. So the total yield is as high as 56% ,which is higher by 4% compared with the common domestic levels. The quality of the product reaches,even exceeds the standard established by the Light Industry Ministry. At the same time the containing chromium waste water can be reutilized and the discharge can basically meet the requirements of the discharge standards.

本文在洋茉莉醛生产传统工艺的基础上作了较大的改进。黄樟油在氢氧化钾溶液存在下,温度170℃、时间7h,异构产率达90%;在酸性介质下,重铬酸钠法氧化温度控制在45~60℃,时间2.5h,产率达86%,总收率为56%,较国内水平提高4%;产品质量达到或超过轻工业部部颁标准;并对含铬废水进行了回收利用,使其基本上达到排放标准.

Abstract Making use of cakein as indicator, in potassium hydrate medium(pH≥10),the paper studies EDTA complexometric titration to complex compound which is formed when BaCa reacts on calcein accompanying yenow and green fluorescence.Themethod has been successfully used to determine Ba content in actual sample.

本文利用钙黄绿素为指示剂,在pH≥10的氢氧化钾介质中,研究了钡钙与钙黄绿素产生黄绿色荧光的络合物进行EDTA络合滴定。此方法已成功地用于实际样品中钡的测定.

 
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