• 工业生产常用环己烷戊烷夹带剂进行精馏生产无水乙醇。

    Benzene, cyclohexane and normal pentane etc. are frequently used as entrainers in industrial production of anhydrous alcohol through constant boiling and fine distillation.

    youdao

  • 采用邻二甲一氧化碳原料无水三氯化铝为催化剂,对3,5-二甲基甲醛羰基化合成反应进行了研究。

    A new method related to the carbonylating synthesis of 3,5-dimethylbenzaldehyde was studied using o-xylene and CO as the raw materials and anhydrous AlCl3 as the catalyst.

    youdao

  • 无水硫酸铜催化剂,在微波辐射下催化合成甲醛乙二醇缩醛

    Benzaldehyde ethylene glycol acetal was directly synthesized from benzaldehyde and ethylene glycol under microwave irradiation with cupric sulfate as catalyst.

    youdao

  • 该文研究微波辐射常规加热卤素交换化合成对氟硝基的方法,提出了共沸干燥和微波干燥制备无水KF的方法。

    The halogen exchange method to prepare p fluoronitrobenzene under microwave irradiation and conventional heat was studied. Drying KF by azeotropy and microwave irradiation was proposed.

    youdao

  • 乙酸酐、乙基无水三氯化铝为原料合成对乙基乙酮,利用碘仿反应氧化对乙基乙酮制备乙基甲酸

    The p-ethylacetophenone was synthesized with acetylated, ethylbenzene and anhydrous aluminium chloride, then was oxidized top-ethylbenzoic acid with iodoform reaction.

    youdao

  • 分别以乙醇体积为1:1无水乙醇与混合溶液溶剂,以二硫化单质为硫

    Absolute ethanol and a mixed solution of ethanol and benzene with the volume ratio of 1:1 are used as the solvents, and carbon disulfide and sulfur powders as the sulfur ions source, respectively.

    youdao

  • 丁酰氯化铝催化剂的条件下制备异丙基酮。

    Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.

    youdao

  • 研究了以无水氯化钙催化剂中性条件下合成2, 4- 二硝基方法。

    A new route for preparing 2,4-dinitrophenylhydrazones by treating aromic aldehydes or alkane ketones and 2,4-dinitrophenylhydrazines with anhydrous calcium chloride as a catalyst.

    youdao

  • 将PVPK30SDS、氟尼考混合均匀粉碎150然后加入葡萄糖,混合均匀。

    PVPK30, SDS and florfenicol are mixed uniformly, crushed, pass through a 150mesh screen, and then are added with the anhydrous glucose to be mixed uniformly.

    youdao

  • 无水硫酸铜作催化剂,在微波辐射催化合成甲醛乙二醇缩醛。

    Synthesis of benzaldehyde glycol acetal catalyzed by strong-acid cation-exchange resin;

    youdao

  • 硫酸铜作催化剂,微波辐射催化合成甲醛乙二醇缩醛

    Synthesis of benzaldehyde ethylene glycol acetal under microwave irradiation catalyzed by sulfate;

    youdao

  • 硫酸铜作催化剂,微波辐射催化合成甲醛乙二醇缩醛

    Synthesis of benzaldehyde ethylene glycol acetal under microwave irradiation catalyzed by sulfate;

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定