The effect of low pressure hydrogenation refining with FH-98 catalyst on FCC diesel oil after refining by acid solvent was examined.
考察了FH- 98催化剂对酸性溶剂精制后的FCC柴油低压加氢精制的影响。
In here, in solution you have all these molecules of solvent, molecules of salt, molecules of acid, or whatever, pH that are going to be around to buffer the pH.
在这里，溶液里包含了所有这些溶剂分子，盐分子酸分子和其它东西，可以用来缓冲。
OBJECTIVE: to determine organic solvent residual volume in fusidic acid by headspace gas chromatography.
目的：建立以顶空气相色谱法测定夫西地酸中有机溶剂残留量的方法。
Lower viscosity of the solution was associated with higher concentration and strong of acid in the solvent.
溶液黏度随溶剂中酸浓度增加和酸性增强而下降。
Results It is evident that the content of matrine in Sophora flavescens using chloroform as solvent is less than using methanol or acid methanol.
结果用氯仿做溶媒时苦参中苦参碱的含量明显低于用甲醇或酸性甲醇做溶媒时的含量。
Ganciclovir could be purified to more than 99.0%(HPLC) by a combination of acetone, acetic acid and water in 83.3% recovery as compared with 30% one when using water or methanol as solvent.
相比目前使用的水或甲醇溶剂纯化收率30％，发现以丙酮、乙酸、水的溶剂体系，精制更昔洛韦收率可显著提高到83.3％，高效液相色谱（HPLC）分析，产品纯度达到99.0％以上。
If the tertiary butyloxycarbonyl group is being used as amino-protecting group, its removal is effected with acid, such as HCl and isopropanol as a solvent or with trifluoroacetic acid neat.
如果用三叔丁基羟基作为氨基保护基团使用，应用酸来将其脱去，如以盐酸和异丙醇为溶剂或无水三氟乙酸。
The process of removing acetic acid from furfural wastewater by solvent extraction is studied in this paper.
本文研究了溶剂萃取法去除糠醛废水中醋酸的工艺过程。
Methods of leuco-oxidizing, solvent treating, ball milling and acid treating are used for pigmentation of Vat Blue RS .
还原蓝RS颜料化主要采用了隐色体氧化法、溶剂处理法、球磨法和酸处理法。
It is discovered that isomerization of 2,10-epoxypinane produce mainly perillyl alcohol in 353 ~ 363 K catalyzed by acid catalysts in strongly polar protonic solvent.
结果表明：在酸催化剂存在下，强极性非质子溶剂中，2，10-环氧蒎烷于353-363K可定向重排生成紫苏醇。
Green solvent for determining the acid value of rosin glyceride by means of titration was studied.
采用中和法测定松香甘油酯的酸值，对溶解松香酯的溶剂进行了绿色化研究。
The process of removing acetic acid from furfur al wastewater by solvent extraction is studied in this paper.
本文研究了溶剂萃取法去除糠醛废水中醋酸的工艺过程。
Methods Stearic acid and solvent gasoline were used in pathological paraffin section.
方法应用硬脂酸与溶剂汽油替代二甲苯用于病理石蜡制片。
Greeniz solvent for determining the acid value of rosin glyceride by means of titration was studied.
采用中和法测定松香甘油酯的酸值，对溶解松香酯的溶剂进行了绿色化研究。
This paper deals with the way of purifying highly purity hyaluronic acid from ox eye by fractionation and organic solvent precipitation.
本文报道采用分级分离并结合有机溶剂沉淀法，从牛眼中纯化出高纯度透明质酸，较其他方法简便，易形成规模。
The disadvantage is lower mechanical strength, oil, solvent and acid poor, difficult to cure more expensive.
缺点是机械强度较低，耐油、耐溶剂和耐酸碱性差，较难硫化，价格较贵。
The ethyl stearate react with sucrose and to synthesize the sucrose fatty acid ester in the poisonless solvent (propanediol).
由硬脂酸乙酯与蔗糖在无毒溶剂丙二醇存在下进行酯交换反应，合成了硬脂酸蔗糖酯。
In the experiment, single-factor analysis was adopted and the influence of the amount of benzoic acid and solvent and the reaction time on the organic con- tent in bentonite was studied.
采用单因素分析方法，考察苯甲酸用量、分散剂用量、反应时间等因素对苯甲酸有机膨润土有机物含量的影响。
Syntheses of low - molecular weight polyacrylic acid sodium with water as solvent and APS - SHS as REDOX initiator are studied.
以水为溶剂，过硫酸铵-亚硫酸氢钠氧化还原引发体系，研究了低分子质量聚丙烯酸钠的合成。
The intumescent flame retardant melamine pyrophosphate was prepared by melamine and pyrophosphoric acid in solvent.
通过焦磷酸与三聚氰胺在溶剂中直接作用合成了膨胀型阻燃剂焦磷酸三聚氰胺。
The most suitable conditions were shown as follows: ambient reaction temperature, phosphoric acid as catalyst and solvent.
研究了影响反应的条件，温度为室温，催化剂及溶剂为磷酸。
The main factors affecting the reaction such as ratio of reactants, the catalyst (p toluenesulfonic acid), temperature and solvent were discussed.
探讨了硬脂酰氯和单宁酸的量比、催化剂对甲苯磺酸的用量、反应温度和溶剂等对合成的影响。
The recipe: acetic acid as solvent, MMA contents from 10 vol % to 30 vol %.
配方：溶剂：醋酸，单体中甲基丙烯酸甲酯体积分数为10%到30%。
This paper relates to the synthesis of sucrose polyesters by sucrose and fatty acid using solvent-free process.
本文旨在研究以长链脂肪酸和蔗糖为主要原料合成蔗糖多酯的工艺路线。
With p-toluene sulfonic acid used as catalyst and chlorobenzene as organic solvent, the reaction kinetics between phenol and acetal have been studied at room temperature.
本文研究了以对甲苯磺酸为催化剂，氯苯为溶剂，室温附近的条件下，苯酚及对叔丁基酚与甲缩醛反应的动力学。
The films remain properties of both cardanol-formaldehyde resin and epoxy resin , which are acid-resisting , alkali-resisting and organic solvent-tolerant, and also have good service time.
该聚合物与环氧树脂形成的涂膜兼具酚醛树脂型和环氧树脂型涂膜的优异性能，耐酸、碱和有机溶剂，而且使用期较长。
Applied some kinds of carboxylic acid as solvent, a series of malachite green-boric acid reversible thermochromic paints were prepared by solid phase synthesis method.
选用羧酸类溶剂，采用固相法合成了孔雀石绿-硼酸系列可逆热致变色材料。
Methods of the removal of naphthenic acid are chemical extraction, solvent extraction absorption, and so on.
脱除环烷酸的方法一般可有化学萃取、溶剂萃取、吸收等。
Methods of the removal of naphthenic acid are chemical extraction, solvent extraction absorption, and so on.
脱除环烷酸的方法一般可有化学萃取、溶剂萃取、吸收等。
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