查询词典 methanol

At the same time coupling reaction combined with urea and methanol is used in the synthesis of methyl carbamate.

重点研究了氨基甲酸甲酯的合成路线，本文将耦合反应应用于氨基甲酸甲酯的合成反应中，结合尿素醇解法制备氨基甲酸甲酯。

In the second step, methyl carbamate reacts with methanol to form dimethyl carbonate.

本文对尿素和甲醇合成碳酸二甲酯的反应体系进行了热力学分析。

It was pointed out that such problems as high recycling water temperature, bad cooling effect in methanol synthesis, high carbonizer temperature and incomplete absorption of ammonia, etc., existed in the conventional process.

分别介绍了天九化工有限公司合成氨生产装置冷却系统改造前后的工艺流程，指出原工艺流程存在循环水温度高、甲醇合成冷却效果差、碳化塔温度高、氨吸收不完全等问题。

By installing cooling tower in the methanol synthesis section, changing the ammonia absorption plant from once into twice, and changing the flow path of cooling water in carbonizer, the new process overcame disadvantages existing in the former process.

新工艺通过在甲醇合成工段安装冷却塔、将一次吸氨装置改成二次吸氨装置、改变碳化塔冷却水流程等措施，克服了原工艺流程存在的缺点，并且生产1 t氨的煤耗降低252 kg，电耗降低182 kW·h，成本降低180元。

When using o-xylene carbonyl and methanol, the by-product hydrogen gas with high purity can be obtained.

以邻二甲苯和甲醇为原料时，可获得高纯度的副产品氢气。

Another advantage is that they can be replenished with a new cartridge of methanol in seconds.

另一个优点是它们能够在数秒钟内以新的甲醇匣补充电力。

This paper systematically introduces the development process and achievements of China's methanol synthesis catalyst.

本文系统地介绍了我国甲醇合成催化剂的研究发展历程和取得的成就。

The extracting coenzyme Q_(10) from Blakeslea trispora using saponific ation was also studied by orthogonal test. And the optimum extracting conditions were obtained as follows: Wet culture was distilled at 70℃for 60min, added caustic potash up to 1.9 times of dry culture, pyrogallol up to 1/2 dry culture, and the concentration of alkali-methanol was 10%.The average recovery of CoQ_(10) was 81.5%.

采用正交实验，对醇碱皂化法提取三孢布拉氏霉菌体中辅酶Q_(10)的各工艺条件进行了研究，确定最佳的工艺条件为： KOH加量为干菌体质量的1.9倍，醇碱浓度为10%，焦性没食子酸添加量为干菌体质量的1/2，在70℃下皂化60min，其平均提取收率达81.5%。

The ratios of mobile phase (methanol∶acetonitrile∶1% formic acid, pH3.0) were 10∶15∶75, 10∶10∶80, 6∶6∶88 for lettuce, celery and pakchoi cabbage, respectively.

生菜、芹菜和小白菜样品选用的流动相（甲醇∶乙腈∶1%甲酸，pH3.0）体积比分别为10∶15∶75，10∶10∶80，6∶6∶88。

As cetane number of methanol is quite low, it is difficult to be applied to compression ignition engine.

根据组合燃烧发动机的特点，将发动机运行工况分为6类，针对每类工况提出不同的控制策略。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。