查询词典 acid reaction

The optimum reaction temperature is 70℃,sulfuric acid is 9% of the quality of tuna oil,reaction time is 6 h.

试验确定反应的最优工艺条件为：反应温度 70℃，浓硫酸用量为鱼油的 9%，反应时间为 6h。

The effects of reaction time, reaction temperature, amount of catalyst, and amount of sodium hydrate on the yield of epoxysuccinic acid were investigated.

考察了实验中影响环氧琥珀酸收率的主要因素，如反应时间、反应温度、催化剂用量及氢氧化钠用量。

The very good method to analyze the structural change of reaction process of polyvinyl alcohol modified UF resin by the traditional process alkali-acid-alkali is 13C-NMR,and which extrapolate a possibly reaction.

通过13C-NMR解析了采用传统工艺合成聚乙烯醇改性脲醛树脂反应过程中的结构变化，并推测其反应。

The method solves the problems better through adopting the following technical proposal that: the method takes the solid super acid consisting of the VIB group elements or the VIB group elements and the IVB group elements in the periodic table of elements and loaded on a symbiosis molecular sieve as catalyst, and naphtha with the component being C4-C10 as a raw material so as to carry out catalytic cracking reaction at a temperature of between 550 and 700 DEG C, under a pressure of between 0.01 and 0.5 MPa, at a reaction weight space velocity of between 0.1 and 4 hours and with the weight ratio between water and naphtha of between 0.5:1 and 4:1, thereby generating ethylene and propylene.

本发明涉及一种催化裂解制乙烯丙烯的方法，主要解决现有催化裂解制乙烯丙烯催化剂的使用温度高，活性低，乙烯丙烯选择性差的问题，本发明通过使用在共生分子筛上负载由元素周期表VIB族元素或VIB族元素和IVB族元素组成的固体超强酸作为催化剂，以组份为C 4 ～C 10 的石脑油为原料，在反应温度为550～700℃，反应压力为0.01～0.5MPa，反应重量空速为0.1～4小时-1 ，水/石脑油重量比为0.5～4∶1的条件下，进行催化裂解反应生成乙烯丙烯的技术方案，较好地解决了该问题，可用于催化裂解制乙烯丙烯的工业生产中。

The good method to analyze the structural changes of reaction process of melamine modified UF resin by the traditional process alkali-acid-alkali is 13C-NMR. It can also extrapolate potential reaction.

通过13C-NMR可以很好地解析采用传统工艺合成三聚氰胺改性脲醛树脂反应过程中的结构变化，并可推测其发生的反应。

The effects of molar ratio of anhydrous ethanol to glacial acetic acid, dosage of catalyst, reaction temperature and reaction time on the esterification ratio and reuse of catalyst were discussed.

探讨了酸醇物质的量的比，催化剂的用量，反应时间和反应温度对酯化率的影响及催化剂的重复使用情况。

The effects of reaction temperature, reaction time, the quantity of glacial acetic acid, the quantity of hydrogen peroxide and the quantity of magnesium sulfate anhydrous on the results of experiment are investigated.

探讨了该工艺的可行性，分别考察了反应温度、反应时间、冰醋酸用量、过氧化氢用量以及无水硫酸镁用量对实验结果的影响。

The effects of various influence factors, such as the amounts of glacial acetic acid, hydrogen peroxide and catalyst, reaction temperature, reaction time were discussed.

采用过氧乙酸法制备环氧棕榈油，研究了乙酸、双氧水、催化剂用量以及反应温度、反应时间对环氧值的影响。

Halogen, proton acids, sub-halogen acid are electrophilic reagents, olefin addition reaction is the electrophilic addition reaction .

卤素、质子酸，次卤酸等都是亲电试剂，烯烃的加成反应是亲电加成反应。

The reaction was investigated in the synthesis of maleate using maleic anhydride and methanol as raw materials and solid acid as catalyst, and it was found that sodium bisulfate catalyzed the reaction more efficiently than that of molecular sieve.

考察了固体酸对顺丁烯二酸酐和甲醇合成马来酸酯的催化作用，结果表明，硫酸氢钠比分子筛的催化效果好。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。