-propylene glycol 2-丙二醇(93) 2－丙二醇(5)   2-丙二醇      Synthesis of Cyclohexanone 1,2-Propylene Glycol Ketal Catalyzed withSO _4~(2-)/TiO_2-La_2O _3      SO_4~(2-)/TiO_2-La_2O_3催化合成环己酮1,2-丙二醇缩酮的研究 短句来源      n(benzoic acid):n(1,2-propylene glycol) is 2.1:1;      n(苯甲酸):n(1,2-丙二醇)为2.1:1; 短句来源      Catalytic Synthesis of Cyclohexanone 1,2-Propylene Glycol Ketal by Rare Earth Solid Superacid SO _4~(2-)/TiO_2 /Ce(Ⅳ)      稀土固体超强酸SO_4~(2-)/TiO_2/Ce(IV)催化合成环己酮1,2-丙二醇缩酮 短句来源      Gas-phase Selective Oxidation of 1,2-Propylene Glycol over Ag/ZrO_2 Catalyst      Ag/ZrO_2催化剂上的1,2-丙二醇选择性气相氧化反应 短句来源      the dewater agent(benzene) is 15mL(when 1,2-propylene glycol is 0.2mol).      带水剂苯为15mL(1,2-丙二醇为0.2mol的情况下)。 短句来源 更多          2－丙二醇      Study on Catalysts for Oxidation and Debydrogenation of 1,2-Propylene Glycol to Methylglyoxal      1，2－丙二醇氧化脱氢合成丙酮醛 短句来源      Under optimal reaction conditions, the conversion of 1,2-propylene glycol and selectivity of methylglyoxal are 97%and 80%respectively.      试验结果表明，该催化剂具有较高的活性，在适宜的反应条件下，1，2－丙二醇转化率达97％，丙醇醛选择性为80％。 短句来源      The results show that under optimum reaction conditions, the conversion of 1,2-propylene glycol and selectivity of methylglyoxal are 98% and 72% respectively.       实验表明，在适宜条件下，原料1，2－丙二醇转化率大于98％，产品丙酮醛收率达72％。 短句来源      The catalysts have been studied in a fixed flow reactor under atmospheric pressure. Highlyactive and selective catalysts for the oxidation and dehydrogenation of 1,2-propylene glycol tomethylglyoxal have been obtained.      利用固定床反应器考察了分子筛银催化剂对1，2－丙二醇氧化脱氢合成丙酮醛的催化性能。 短句来源      The silverbased catalysts have been studied in a fixed flow reactor under different conditions. Highly active and selective catalyst for the oxidation of 1,2-propylene glycol to methylglyoxal has been obtained.      利用固定床反应器研究了改性电解银催化剂对1，2－丙二醇空气氧化合成丙酮醛的催化性能，考察了不同条件对反应活性的影响。 短句来源   “2-propylene glycol”译为未确定词的双语例句      Process for the Catalytic Purification of 1,2-propylene Glycol      1，2－丙二出醇的催化精制过程 短句来源      The yield of 1,2-propylene glycol dibenzoate is 95.94%.      丙二醇二苯甲酸酯的收率达到95.94%。 短句来源      The results showed that the maximum tan δ was 0.41, elasticity modulus 18.35 MPa and damping temperature range -18～15 ℃, when tolylene diisocyanate, 1,2-propylene glycol were used and the PPG/PECH mass ratio remained 60/40, tolylene diisocyanate/(PPG+PECH) mole ratio equaled 5/1. This damping property was better than those of PU in the present work.      结果表明 ,以TDI为二异氰酸酯 ,PG为扩链剂 ,当PPG/PECH为 60 /40 ,TDI/聚醚多元醇 (摩尔比 )为 5 /1时 ,试样的最大阻尼损耗因子为 0 41 ,弹性模量为1 8 3 5MPa,阻尼温域为 -1 8～ 1 5℃ ,阻尼性能较其他试样好。 短句来源      A new environmental friendly catalyst,H_4SiW_(12)O_(40)/PAn was prepared. Fraistone (Ⅰ) was synthesized from ethyl acetoacetate (Ⅱ) and 1,2-propylene glycol (Ⅲ) in the presence of H_4SiW_(12)O_(40)/PAn (Ⅳ).      以硅钨酸(H4SiW12O40)掺杂聚苯胺(PAn)H4SiW12O40/PAn为催化剂,以乙酰乙酸乙酯和1,2 丙二醇为原料合成苹果酯 B,较系统地研究了原料摩尔比、催化剂用量、反应时间诸因素对产品收率的影响。 短句来源      There is a synergistic effect between these components when a highly active and selective supported silver-catalyst simultaneously modified with Zn,Ba,P and K was used for the oxidation of 1,2-propylene glycol at 300 ℃,PGO space velocity 10 h~-1,and n(O_2)/n(PGO)=1.1,the selectivity of methylglyoxal reached 90%. [      并发现这些改性组份间存在协同效应 ,同时用Zn、Ba、P、K对银催化剂进行改性 ,丙酮醛的选择性最高 ,当反应温度 30 0℃、丙二醇空速 1 0h- 1、氧醇摩尔比 1 1时 ,丙酮醛选择性可达 90 0 %。 短句来源 更多        查询“2-propylene glycol”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   -propylene glycol Optimum conditions were found for the determination of ethylene glycol, 1, 2-propylene glycol, and glycerin in aqueous solution by the method of gas chromatography. 例句来源       Hydrogel matrix consisting of polyvinyl alcohol and 1,2-propylene glycol was used for application. 例句来源       Hydrogel matrix consisting of polyvinyl alcohol and 1,2-propylene glycol was used for application. 例句来源       M?ssbauer and temperature dependent EPR spectra of three iron/III/ complexes, formed with sugar type ligands /galactose, sorbitol and 1,2-propylene glycol/ were investigated. 例句来源       Replacing ethylene glycol by glycerol and 1,2-propylene glycol but not by 1,3-propylene glycol resulted in active EFAT. 例句来源       更多                    The castor oil base brake fluid has been found unable to meet the present-day requirements both in its performances and resource.This paper discusses the feasibility of using alkylene oxide polyethers as the lubricant base of brake fluid to replace castor oil. It aslo explores the possibility of utilizing polytriols of different molecular weight range by use of propylene glycol.The technical performances of the new brake fluid ZSM41 as such is said to equal and partly exceed the conventional SY ...             蓖麻油润滑基车用制动液其性能和来源均不能满足当前要求,本文论述了以氧化烯烃聚醇醚代替蓖麻油用作制动液润滑基并讨论了应用丙二醇以扩大使用不同分子量范围的三羟型聚醇醚,由此而制得的ZSM41车用制功液,其性能达到并超过原醇型制动液石油部标准SY2913—77。 文摘来源          The polyesters with terminal hydroxyl groups were prepared by condensation polymerization of adipic acid with 1,4-butanediol or ethylene glycol and, in some cases, a little amount of propylene glycol. The polyurethane thermoplastics were then prepared with the polyester, 4,4'-diphenylmethane diisocyanate and 1,4-butanediol. It was found that the NCO/OH ratio in the thermoplastics and the molecular weight of the polyester show apparent effects on the physical and mechanical properties of th...             采用己二酸、乙二醇(或加入少量1,2-丙二醇)和1,4-丁二醇制备了端羟基聚酯,并用该聚酯和4,4’-二苯基甲烷二异氰酸酯(MDI)、1,4-丁二醇制备了聚酯型热塑性聚氨酯;考察了NCO/OH值、聚酯分子量等因素对热塑性聚氨酯的物理机械性能的影响。结果表明,NCO/OH值和聚酯分子量是影响热塑性聚氨酯物理机械性能最重要的因素。 文摘来源          Both rivanol solution and the mixture of rivanol, glycerol, and propylene glycol were injected into the peritoneal cavities of the female rabbits. There were not significant difference on SGPT and BuN in the rabbits before and after given both rivanol preparations (40mg/kg). The livers and kidneies didn't occur significantly pathological change than control. Rivanol intraperitoneal injection may not impair the liver and kidney. When intrauterine rivanol used for termination of early pregnancy en...             两种利凡诺(40mg/kg)制剂(“水剂”和“合剂”)雌兔腹腔注射,72h后的SGPT和BUN与用药前比较,均无显著差异(P>0.05);肝肾组织亦无明显病理改变。腹腔内大剂量利凡诺并不明显引起肝肾功能和形态损害。如利凡诺“合剂”用于宫腔内抗早孕时,即使利凡诺完全进入腹腔内也还是安全的 文摘来源   << 更多相关文摘         相关查询: 2-propylene 2 propylene glycol 2-propylene ketal 3-propylene glycol 2-propylene acetal propylene glycol 2-[ 2 2-〔2 2-(2 2- [ 2- - 2  对查询结果不满意

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