氟化钾

  • 网络POTASSIUM FLUORIDE
氟化钾氟化钾
  1. 本方法选择性高,对于Mn(Ⅱ)的干扰可通过加入氟化钾来消除。

    The interference of Mn (ⅱ) has been shown to be eliminated by adding potassium fluoride .

  2. 无水氟化钾催化的Perkin反应

    Perkin Reaction Catalyzed by Anhydrous Potassium Fluoride

  3. 铁的氟化钾取代EDTA容量法测定

    Volumetric Determination of Ferrum by Substituting KF for EDTA

  4. 氟化钾负载改性法制备碱性NaY沸石

    The basicity of NaY zeolite created by KF modification

  5. 在氟化钾催化下,芳香醛与氰乙酸乙酯发生羰基与活性亚甲基的缩合反应,高收率地得到缩合产物,且只得到E式产物。

    The carbonyl methylene condensation reaction of aromatic aldehydes with ethyl cyanoacetate has been carried out smoothly in the presence of potassium fluoride only giving E isomers in high yield .

  6. 无水氟化钾和无水碳酸钾催化糠醛与乙酸酐的Perkin反应

    Perkin Reaction of Furfural with Acetic Anhydride Catalyzed by Anhydrous Potassium Fluoride and Anhydrous Potassium Carbonate

  7. 氟阴离子在有机合成中的应用Ⅰ.无水氟化钾催化丙二酸二乙酯与苯甲醛的Knoevenagel缩合反应

    Application of Fluoride Anion in Organic Syntheses ⅰ . Knoevenagel Reaction of Diethyl Malonate with Benzaldehyde Catalyzed by Anhydrous Potassium Fluoride

  8. 因此,必须研究高浓度下氟化钾Pitzer参数的求解问题。

    For this reason , the evaluation of Pitzer parameter of KF in high concentration solution must be studied .

  9. 本文报道了在固液相转移催化条件下,将氟化钾浸渍的氧化铝作为强碱,季铵盐作为相转移催化剂(PTC),合成环丙烷-1,1-二甲酸二乙酯,探讨了该反应的机理。

    Diethyl cyclopropane-1 , 1-dicarboxylate was synthesised using alumina coated with potassium fluoride as a strong base and quaternary ammonium salt as a phase transfer catalyst ( PTC ) . Based on the experimental results a catalytic mechamism was proposed .

  10. 用自制的液液平衡器测定了298.15K下异丙醇-苯-水-氟化钾体系的液液平衡数据。

    Liquid-liquid equilibrium data for the system of isopropanol-benzene-water in the presence of potassium fluoride at 298.15 K were measured using the self-made liquid liquid equilibrium apparatus made by authors .

  11. 对过氧化氢氟化钾(KF·nH2O2)的合成进行了研究,并提出添加一定数量稳定剂,以提高其产品在高温下稳定性的方法。

    The synthesis of potassium fluoride peroxide ( KF · nH_ ( 2 ) O_ ( 2 )) is studied , and the measures for improving the stability of the product by adding a certain amount stabilizer are also stated .

  12. 以氟化钾浸渍的氧化铝为强碱,在固液相转移催化条件下,由活泼亚甲基化合物(1a~1d)与1,2-二溴乙烷合成了4种活性环丙烷化合物2a~2d,并探讨了其反应机理。

    Four active cyclopropane compounds 2a - 2d were synthesized using active methylene ( 1a - 1d ) and 1 , 2-dibromoethane with potassium fluoride soaking alumina as a strong base under the condition of solid-liquid phase transfer catalysis , and the reaction mechanism was discussed in this paper .

  13. 超声辐射下,氧化铝固载氟化钾催化的芳醛与苯乙酮的Claisen-Schmidt缩合在无水乙醇中于30~45℃进行,查耳酮的收率为26%~93%。

    Claisen-Schmidt condensation of acetophenone with aromatic aldehydes catalyzed by KF / Al 2O 3 in ethanol at 30 ~ 45 ℃ results chalcones in 26 % ~ 93 % yields under ultrasound irradiation .

  14. 纯氟化钾镁晶体色心光谱精细结构

    Spectral Fine Structures of Color Centers in Pure Potassium Magnesium Fluoride Crystals

  15. 用氟化钾水溶液从制药废液中回收吡啶

    Recovering Pyridine from Pharmaceutical Waste Liquor with Aqueous Potassium Fluoride

  16. 从提锂母液制取氟化钾的研究氟化镁母液的回收利用乙酰磺胺酸钾的合成

    Investigation on Preparing Potassium Fluoride from Mother Liquor in Production of Lithium Compounds

  17. 氟化钾在原硅酸乙酯和三乙醇胺的缩合反应中的催化作用

    Catalytic action of potassium fluoride for condensation reaction of ethyl orthosilicate with triethanolamine

  18. 乙腈-水-氟化钾及乙腈-水-碳酸钾液液相平衡数据的测定和关联

    Measurement and correlation of liquid-liquid equilibrium data for ACETONITRILE-WATER-POTASSIUM fluoride and ACETONITRILE-WATER-POTASSIUM carbonate systems

  19. 氟化钾和高氟茶细胞及遗传毒性的实验研究

    Studies on the Cytotoxicity and Genotoxicity of KF and Tea Soaks Containing High Fluoride

  20. 二硼化钛在氟化钾溶液中的放电行为

    Discharge Behavior of TiB_2 Anode in KF Solution

  21. 异丙醇-苯-水-氟化钾体系液液平衡

    Liquid-liquid equilibrium for the isopropanol-benzene-water-potassium fluoride system

  22. 横向泵浦室温氟化钾镁晶体色心激光器

    Transversely Pumped Laser Using Color Centers in the Potassium Magnesium Fluoride Crystals at Room Temperature

  23. 三氧化二铝固载氟化钾催化合成香豆素

    The Catalytic Synthesis of Coumarin in the Presence of Potassium Fluoride Supported by Aluminium Oxide

  24. 氟化钾催化下的克脑文格尔反应

    The knoevenagel condensation catalyzed by potassium fluoride

  25. 因此用氟化钾可以有效地分离吡啶水体系。

    Thus water could be separated efficiently from the pyridine-water by adding KF into the system .

  26. 报道了在无水氟化钾和乙腈作用下2-庚酮的合成。

    This paper reports the synthesis of 2-heptanone in the functions of absolute potassium fluoride and acetonitrile .

  27. 吡啶-水-氟化钾体系的液液相平衡

    Liquid-Liquid Equilibrium for Pyridine-Water-KF System

  28. 结果表明:产生的丙烯腈相中含有可以忽略的盐,水相中含有可以忽略的丙烯腈,因此用氟化钾或碳酸钾可以有效地分离丙烯腈-水体系;

    The results show that the acrylonitrile phase contains negligible salt and water phase contains negligible acrylonitrile .

  29. 利用横向泵浦腔体实现氟化钾镁晶体色心室温稳定激光器运行。

    A stable potassium magnesium fluoride color center laser operated at room temperature using transversely pumped cavity is constructed .

  30. 在离子液体中用氟化钾氟化是一个新的优良氟化方法。

    It is pointed out by author that fluorination with potassium fluoride in ionic liquids is a good fluorination method .