氯酸钠

The procedure of oxidation of β-ionone by sodium chlorate was studied using gas chromatography-mass spectrometry to analyze the reaction products. And their structures were characterized by IR, MS, 1HNMR and EA.

采用GC-MS方法分析反应产物，对氯酸钠氧化β-紫罗兰酮的反应工艺进行研究，并探讨温度、时间、反应物配比和溶液的pH值对反应的影响。

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

A newel technique proves that the chlorine dioxide is produced by the reaction of sodium chlorate with hydrogen peroxide under the existence of sulfuric acid.

利用实验室搭建的二氧化氯反应装置，用过氧化氢在硫酸介质中还原氯酸钠，制备二氧化氯水溶液。

Some interactions have been found between ions of sodium perchlorate and water molecules.

无机盐高氯酸钠的加入破坏了水分子的氢键结构，阴阳离子分别与水发生相互作用。

The effect of the accelerators in phosphating solution on phosphatization was investigated. The reaction mechanism was also studied.

为此研制了一种含硝酸肌和氯酸钠的复合促进剂，考察了复合促进剂所含物质对磷化液磷化效果的影响，对其作用机理进行了讨论。

The proposed method is based on the accelerating effect of nitrite on the reaction between potassium chlorate and methylene blue in strongly acidic media and combines the flow injection.

该方法结合流动注射技术，以亚硝酸盐对氯酸钠与亚甲基蓝发生的褪色反应有催化作用的研究结果为基础。

The first process is failed, which is for manufacture of monopotassium phosphate and sodium chlorate from potassium chloride, phosphoric acid and sodium hydroxide.

以氯化钾、磷酸和氢氧化钠为原料联产磷酸二氢钾和氯酸钠的工艺路线还存在一些问题。

The proposedmethod is based on the accelerating effectofnitrite on the reaction between potassium chlorate andmethylene blue in strongly acidicmedia and combines the flow injection.

该方法结合流动注射技术，以亚硝酸盐对氯酸钠与亚甲基蓝发生的褪色反应有催化作用的研究结果为基础。

Furfural laws to furfural as raw material, derived by oxidation of sodium chlorate.

糠醛法 以糠醛为原料，经氯酸钠氧化而得。

A sodium chlorate solution was prepared by dissolving the A.R. of the NaClO3 powder in distilled water.

氯酸钠晶体溶液是通过溶解分析纯 NaClO3 粉末于去离子水中配制而成。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。