研究了一种五氧化二氮为硝化剂,选择性硝化缩水甘油合成缩水甘油硝酸酯的温和、高效方法。
A mild and high efficient method to prepare glycidyl nitrate by selective nitration of glycidol with dinitrogen pentoxide as the nitrating agent was developed.
前言: 简要介绍以五氧化二氮为硝化剂制备硝酸酯的“绿色”硝化反应的类型、工艺及特点。
The types, technology and characteristics of the "green" nitration for preparing nitric esters using dinitrogen pentoxide as the nitrating agent were introduced.
简要介绍以五氧化二氮为硝化剂制备硝酸酯的“绿色”硝化反应的类型、工艺及特点。
The types, technology and characteristics of the "green" nitration for preparing nitric esters using dinitrogen pentoxide as the nitrating agent were introduced.
结果表明,二氢茉莉酸丙酯提高了根系活力和叶片硝酸还原酶活性(NRA) ,增加叶绿素含量和可溶性蛋白含量,从而为高产奠定了良好的生理基础。
The results indicated PDJ could improve the vigor of root system and NRA of leaves, increase chlorophyll and soluble protein content, thus laying a better physiological foundation for high yield.
研究了聚乙二醇分子量和含量对TPU的结构和性能的影响,提出了在TPU软段中引入PEG可以改善其与硝酸酯的混溶能力。
The effect of molecular weight and content of PEG in soft segment on morphology and properties of TPU was studied.
一种碳酸二酯的合成方法,通过一氧化碳和亚硝酸酯在催化剂存在下,用较低的压力和较低的温度偶联合成碳酸二酯。
Carbon monoxide and nitrous acid ester are synthesized through coupling reaction into diester carbonate in the presence of catalyst and at relatively low pressure and temperature.
一种碳酸二酯的合成方法,通过一氧化碳和亚硝酸酯在催化剂存在下,用较低的压力和较低的温度偶联合成碳酸二酯。
Carbon monoxide and nitrous acid ester are synthesized through coupling reaction into diester carbonate in the presence of catalyst and at relatively low pressure and temperature.
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