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- sodium formate method 甲酸钠法
- The method do not only recycle Neopentyl glycol from Sodium formate,but also reduce the cost of sodium... 该方法既可回收甲酸钠中的新戊二醇,又可降低生产甲酸时甲酸钠的消耗,具有良好的经济效益和社会效益。
- A new method is introduced in this paper for the synthesis of benzyl formate with benzyl cholride and sodium formate by the phase-transfer catalyst of TBAB. 本文以四丁基溴化铵(TBAB)为相转移催化剂,氯苄和甲酸钠为原料合成甲酸苄酯,从原料配比、催化剂用量、反应时间等影响因素进行了研究。
- Ammonium formate and sodium formate are the suitable hydrogen donors. 甲酸铵和甲酸钠是优良的氢源。
- Bromine extraction experiment was carried out through membrane Absorption method with novel polyvinylidene fluoride(PVDF) hydrophobic hollow fiber membrane,using sodium formate as Absorbent. 利用新型疏水性聚偏氟乙烯(PVDF)中空纤维膜及组件,开展膜吸收浓海水提溴过程研究。
- Sodium formate is much less active for the carbonylation of methanol than sodium methoxide. 甲酸钠对甲醇羰基化反应也具有一定的催化作用,但其活性远远低于甲醇钠。
- In this paper,technological process of conversion of waste liquid of sodium formate to oxalic acid is described. 本文研究了甲酸钠废液转变为草酸的工艺流程。
- The preparation of hydroxyacetone was studied by esterification of chloroacetone with sodium formate and alcholysis of acetonyl formate with methanol. 以一氯丙酮、酸钠和甲醇为原料经酯化与醇解两步反应合成羟基丙酮,研究了反应条件对相转移催化酯化以及醇解反应蒸馏过程的影响。
- This paper expounded the limitation of cocurrent synthesis of sodium formate,put for adverse current synthesis and discussed the advance of this technology. 阐述了并流合成甲酸钠的缺陷,提出逆流方案及这一技术的优势。
- The compound p hydroxybenzonitrile was synthesized by the reaction of p hydroxybenzaldehyde with hydroxylamine hydrochloride and sodium formate in 88%-77. 的甲酸中反应合成对羟基苯甲腈的新方法,考察了原料配比、反应时间、甲酸用量及浓度对反应收率的影响。
- It illustrates the principle of gear member machining the gear with format method, describes the modeling of pinion using the engaged gear with creating a varying alternate blade cutter. 然后采用变异的铣刀盘成形加工得到变异大轮,再依据共扼原理,利用变异大轮展成小轮毛坯实体得到小轮齿面。
- The results indicate sodium formate and sodium aceta te present low pH when neutralization, sodium bicarbonate and ammonium carbonate present high pH,and the Bayer PAK has better properties. 结果表明甲酸钠和乙酸钠为低pH中和剂,碳酸氢钠和碳酸氢铵为高pH中和剂,Bayer公司的PAK综合性能较好。
- Main product-chloroform is obtained from alkaline hydrolysis of chlorine oil, the rest are waste liquids of sodium formate containing sodium formate,sodium chloride and sodium hydroxide. 氯油经氢氧化钠碱解后,除得到主产物氯仿外,其余为含甲酸钠、氯化钠、氢氧化钠等物质的甲酸钠废液。
- The structure, composition and the formation method of a new type NC cloth tape winding machine are introduced in detail. 详细地介绍了一种新型数控布带缠绕机的结构、组成及实现方式。
- The method seems good but it needs to be tried out. 这个方法似乎不错,但需要试验一下。
- NumberFormatInfo provides the culture-specific numeric format used in conjunction with the Format methods in the base data types. NumberFormatInfo提供与基本数据类型中的“格式化”(Format)方法一起使用的区域性特定的数字格式。
- But the effect of the side reaction for the formation of sodium formate is strong.HCOONa increases with the augmentation of temperature and HCOOMe concentration.In ord... 甲醇钠失活的主要原因是反应体系中的甲酸甲酯与甲醇钠发生副反应生成了甲酸钠,该副反应随反应温度的增加而增加,随甲酸甲酯浓度的增大而增大。
- characteristic implicit format method 特征隐式格式法
- A multi layer coating with a SiW outer layer by liquid reaction formation method was prepared for carbon carbon composites,and then the structure of the oxide film on the coating was investigated by XRD,SEM,Raman spectrum and electron probe. 研究了一种液相法及其它方法制备的碳碳复合材料多层防氧化涂层,并用XRD,SEM,Raman光谱和EMPA研究了液相法制备的SiW涂层表面氧化后的结构。
- Natural carotene has been successfully micronized from dichloromethane solutions using CO_2 as antisolvent by the particle formation method of Solution Enhanced Dispersion by Supercritical Fluids(SEDS). 以二氯甲烷为溶剂;超临界CO2为抗溶剂;采用超临界流体强制分散溶液技术成功地对天然胡萝卜素进行了超细化.