排序方式： 共有3条查询结果，搜索用时 0 毫秒
1
1.
通过对电热补偿法测量溶解热装置进行改进，可以测定出放热溶解热，同时测定出了在以三甲氧基苯甲醛为原料合成甲氧苄氨嘧啶(TMP)的缩合、环合工艺中，三甲氧基苯甲醛在甲醇钠溶液中、缩合产品“单甲醚”在甲醇钠溶液中溶解时放出的热量。20g三甲氧基苯甲醛溶解到80mL甲醇钠溶液中放出的热量为498．35J；10g“单甲醚”溶解到30mL甲醇钠溶液中放出的热量为384．10J。 相似文献
2.
Synthesis and kinetics of dichloro-methoxybenzenes were studied from 1,2,4-trichlorobenzene and sodium methoxide in a temperature range of 353—383 K. Effects of molar ratio of reactants, solvent and reaction temperature were investigated. Reaction products include three isomers. The order of selectivity for the three isomers was 1,4- dichloro-2-methoxybenzene2,4-dichloro-1-methoxybenzene1,2-dichloro-4-methoxybenzene. Kinetic equations for the parallel liquid-solid interface reaction between 1,2,4-trichlorobenzene and sodium methoxide were established in the absence of catalyst. Kinetic parameters such as the pre-exponential factors and the activation energy were deter- mined with the Arrhenius equation. 相似文献
3.
研究了餐饮废油在甲醇钠的催化作用下制取生物柴油的工艺条件,实验表明其酯交换过程的最佳工艺条件是醇油物质的量比为7∶1、反应时间为1.5 h、催化剂质量为废油的1.5%及反应温度为60℃。通过对生成的生物柴油作理化性质检测,结果表明,其质量指标完全符合柴油优级品的标准。 相似文献
1