The reaction conditions such as dosages of catalyst, 1, 4 dioxane and water, solvent type, reaction temperature and time, adding method were also studied.
同时还研究了催化剂用量、1,4二氧六环的用量、溶剂种类、反应温度、反应时间、水量及加水方式等对该反应的影响。
Water chestnut drege carboxymethylated product (WCDCMCS) is prepared and studied by methanol solvent method, using water chestnut drege (C6H9O4OH) as raw material under alkaline condition.
研究了以荸荠渣（C6H9O4OH）为原料，采用甲醇溶剂法，在碱性条件下制备出荸荠渣羧甲基化产品（WCDCMCS）。
Steady Iron_sulfur nanoclusters were synthesized in the mixed solvent of water and ethanol with surface modification method.
采用表面修饰的方法在水醇的混合溶剂中制备出了在空气中性能稳定的纳米铁硫簇。
Compared to the conventional organic solvent extraction method, the subcritical water extraction method showed shorter handling time and lower solvent consumption without waste producing.
结果表明，当两者具有相同的提取效果时，亚临界水提取法的提取时间及提取溶剂的消耗量大大减少，避免了使用有机溶剂造成的污染。
The water resistance of PVA was increased by using urea. The product was tested by the method of solvent extraction. The best modification condition was found.
用尿素对聚乙烯醇基料进行了改性，使其耐水性得到提高。并用溶剂萃取法对其耐水性进行了测试，确定了最佳改性条件。
The method of parallel motion of response curve for lead ion-selective electrode in lead buffers is given to determine the stability constant of Pb-NTA complex in ethanol-water solvent.
本文提出了金属缓冲溶液中离子选择电极响应曲线平移法测定配合物的稳定常数。
Determination of free water for compound fertilizers is usually applied Karl Fischer method or vacuum oven method, a different extraction solvent can selected as Karl Frscher method is applied.
复混肥料中游离水含量的测定方法通常采用卡尔·费休法或真空烘箱法，用卡尔·费休法测定时又可选用不同的萃取剂。
Conclusion The extracts from indigowoad root's water solvent can be prepared into granules by the method.
结论板蓝根水提取的浸膏剂可用该工艺制成颗粒。
Methods: the first derivation spectrophotometry method was used to determine the content and content uniformity of methylphenidate hydrochloride tablets with the solvent of water.
方法：以水为溶媒用一阶导数光谱法测定盐酸哌甲酯片的含量及含量均匀度。
As the one of the preferred embodiment, the method USES hog still to remove water and aromatic hydrocarbon organic solvent azeotropy generated in the dehydration reaction.
作为优选的实施方式之一，使用蒸馏塔将在上述脱水反应中生成的水与芳香烃类有机溶剂共沸除去。
Therefore, it is possible to use the cheap solvents (mixture of methanol and water) instead of the expensive hexane and acetone when the Accelerated Solvent Extraction method is employed.
这表明采用加速溶剂提取技术，可用价格较低的甲醇取代昂贵的正己烷和丙酮。
Preparative method of two-components, water-based vinyl polyurethane adhesive was introduced. The adhesive which has good bonding strength. water-and solvent-resistance etc. can used for wood process.
介绍了一种双组分水性乙烯基聚氨酯胶粘剂的制备方法，该胶用于木材加工，具有优良的粘接强度、耐水、耐溶剂等特点。
The effect of four factors, reaction time, solvent-to-solid ratio, acid-to-coal ratio and the water content in extraction mixture, were studied on the extraction rate of acetone-sulfuric acid method.
研究反应时间、液固比、酸煤比、提取液含水量四个因素对硫酸丙酮法提取效果的影响。
The effect of four factors, reaction time, solvent-to-solid ratio, acid-to-coal ratio and the water content in extraction mixture, were studied on the extraction rate of acetone-sulfuric acid method.
研究反应时间、液固比、酸煤比、提取液含水量四个因素对硫酸丙酮法提取效果的影响。
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