磷钨酸

lín wū suān
  • phosphotungstic acid
磷钨酸磷钨酸
  1. 磺化聚醚醚酮/磷钨酸复合质子交换膜

    Sulfonated Poly ( etheretherketone ) / Phosphotungstic Acid Composite Proton Exchange Membranes

  2. 在催化精馏实验装置中,以等体积浸渍法负载于是碳分子筛上的12磷钨酸为催化剂,通过碳酸丙烯酯和甲醇之间的酯交换反应合成碳酸二甲酯。

    In a catalytic distillation column , dimethyl carbonate ( DMC ) was prepared through transesterification between methanol and propylene carbonate using 12 phosphotungstic acid supported on carbon molecular sieves as heterogeneous catalyst .

  3. 磷钨酸季铵盐催化H2O2氧化枞酸的研究两缺位硅钨酸正丁基季铵盐催化枞酸甲酯的环氧化反应

    Study on Oxidation Reaction of Abietic Acid with H_2O_2 Catalyzed by Quaternary Ammonium Phosphotungstate

  4. 磷钨酸乙醇染色法在嗜铬颗粒电镜X射线显微分析中的应用

    Application of ethanolic phosphotungstic acid ( EPTA ) staining to electron probe X-ray microanalysis on chromaffin granule

  5. Sol-Gel固定磷钨酸催化合成乙酸丁酯

    Synthesis of Butyl Acetate Catalyzed by Phosphotungstic Acid Immobilized on Sol Gel

  6. Sol-Gel负载磷钨酸催化合成乙二醇单乙醚醋酸酯

    Synthesis of Ethylene Glycol Monoether Acetate Catalyzed by Phosphotungstic Acid Immobilized on Sol-Gel

  7. 磷钨酸铯沉淀法分离反应堆底泥中的~(137)Cs

    Separation of Cs - 137 from Reactor Sediment Through Precipitation of Caesium Phosphotungstate

  8. 磷钨酸/H2O2对富芳汽油氧化萃取脱硫性能的研究

    Study on desulphurization of oxidation extraction of rich aromatic gasoline by phosphotungstic acid / H_2O_2

  9. XRD结果表明,磷钨酸在SBA-15分子筛上实现均匀分散。

    XRD patterns showed that HPWA was well dispersed in SBA-15 .

  10. 磷钨酸在核壳型乳液TEM表征技术中的应用研究

    The application study of PTA on TEM technic in characterization the structure of core / shell emulsion

  11. 采用溶胶-凝胶法合成了磷钨酸改性介孔分子筛催化剂HPWA-SBA-15。

    Phosphotungstic acid ( HPWA ) was introduced into SBA-15 mesoporous molecular sieve by sol-gel technique to form HPWA-SBA-15 .

  12. TiO2-磷钨酸复合膜的制备及其性能

    Preparation and Properties of TiO_2-HPA Composite Membranes

  13. 磷钨酸掺杂PVA/纳米SiO2复合膜甲醇渗透及质子导电性能的研究

    Studies on methanol permeation and proton conductivity of phosphotungstic acid doped PVA / nano-SiO_2 membranes

  14. 在碱性条件下,用维生素C将磷钨酸还原为钨蓝,钨蓝的吸光度值与维生素C含量成正比。

    Under the alkaline condition , phosphotungstic acid was reduced to tungsten blue with vitamin C. The absorbance ratio of tungsten blue was in di - rect proportion to the contents of vitamin C.

  15. SiO2负载磷钨酸(盐)催化剂对乙酰乙酸乙酯与乙二醇缩合反应的催化性能

    Catalytic Performance of Phosphotungstic Acid ( Salt ) Supported on SiO_2 for Acetalization of Ethyl Acetoacetate with Glycol

  16. MCM-41分子筛负载磷钨酸催化合成苯乙醛乙二醇缩醛

    Synthesis of Phenylacetaldehyde Ethylene Glycol Acetal by Phosphotungstic Acid Supported on MCM-41 Molecular Sieve as Catalyst

  17. 用不同敞度磷钨酸钠&镁溶液,分步沉淀兔血清中脂蛋白,获得高密度脂蛋白(HDL)液。

    Lipoproteins in rabbit serum were isolated by increasing concentration of phosphotungstate-magnesium solution and high density lipoprotein ( HDL ) was obtained .

  18. 苯、甲苯、二甲苯作业人员血细胞和超氧化物歧化酶活力的研究Hβ负载磷钨酸催化剂上甲苯和均三甲苯烷基转移与歧化反应

    Study on hematocyte parameters and activities of serum SOD in workers exposed to benzene , toluene and xylene ; Transalkylation and Disproportionation between Methylbenzene and 1,3,5-Trimethylbenzene Over the H β Zeolite Supported Phosphotungstic Acid Catalyst

  19. 12-磷钨酸(TPA)具有独特的结构及强酸性,广泛应用于石油冶炼等化工工业中。

    12-Tungstophosphoric acid ( TPA ) catalysts are widely used in petrochemical and other chemical industry due to its special structure and strong acidity .

  20. 磷钨酸/双氧水对富芳烃轻油的氧化脱硫作用FCC汽油轻芳烃组分氧化萃取脱硫工艺研究

    Oxidative desulphurization of light gas oil containing considerable aromatic compounds using 12-tungstophosphoric acid / H_2O_2 STUDY ON THE DESULFURIZATION OF LIGHT AROMATICS IN FCC NAPHTHA BY OXIDATION AND SOLVENT EXTRACTION

  21. 本文对活性炭负载的磷钨酸(TPA)催化剂催化合成烷基多苷(APG)进行了研究。

    The synthesis of alkyl polyglucosides ( APG ) using tungstophosphoric acid ( TPA ) catalysts supported on activated carbon were studied .

  22. 采用正硅酸乙酯(TEOS)和聚乙二醇(PEG)作为先驱体,通过溶胶-凝胶法制备了磷钨酸(PWA)掺杂的SiO2/PEG无机/有机杂化质子交换膜。

    TEOS , PEG and PWA as precursors , SiO_2 / PEG / PWA inorganic / organic hybrid PEMs have been prepared through sol-gel process .

  23. 作者用SiO2作为载体,制备了不同负载量的磷钨酸/SiO2催化剂,并加入强酸性树脂以进一步提高催化活性。

    The SiO 2 was used as support , and HPA / SiO 2 with different loading amout were prepared . Strong acidity resin was used for improving the catalytic activity .

  24. 以MCM-41负载磷钨酸作催化剂,对以苯乙醛和乙二醇为原料合成苯乙醛乙二醇缩醛的反应条件进行了研究。

    Phenylacetaldehyde ethylene glycol acetal was synthesized with phenylacetaldehyde and ethylene glycol as raw materials in the presence of phosphotungstic acid supported on MCM-41 molecular sieve .

  25. 方法8只犬Marshall韧带大体解剖观察后连续组织切片,分别采用伊红-苏木精(HE)染色、磷钨酸苏木素(PTAH)染色,在光学显微镜下观察其组成和组织特征。

    Method The ligaments of Marshall of 8 canines were studied by serial sections under the light microscope .

  26. 水溶性聚乙烯醇缩乙二醛胶粘剂的制备MCM-41分子筛负载磷钨酸催化合成苯乙醛乙二醇缩醛

    Preparation of Water Soluble Polyacetal by Condensation of Polyvinyl Alcohol with Glyoxal Synthesis of Phenylacetaldehyde Ethylene Glycol Acetal by Phosphotungstic Acid Supported on MCM-41 Molecular Sieve as Catalyst

  27. 采用微波辐射技术,将硅藻土作载体浸渍于磷钨酸制备成固载杂多酸催化剂,以γ-丁内酯和苯胺为原料合成了1-苯基-2-吡咯烷酮(NPP)。

    A supported heteropolyacid catalyst , prepared by soaking diatomite on tungstophosphoric acid , was used to synthesize N-phenyl-2-pyrrolidinone ( NPP ) by microwave irradiation from gamma butyrolactone and aniline .

  28. 采用盐酸酸化-乙醚萃取法制备了Keggin型硅钨酸、磷钨酸,并分别以活性炭和硅胶为载体,采用不同的制备方法制备出一系列负载型杂多酸。

    A traditional acidification method incorporated with an ether extraction technique was used to prepare silicotungstic acid and phosphotungstic acid with Keggin structure .

  29. 分别采用铌、磷钨酸对V2O5催化剂进行改性,考察了不同铌或磷钨酸含量对改性V2O5催化剂催化性能的影响。

    The effects of the contents of niobium and phosphotungstic acid on the reaction characteristics of modified V2O5 catalysts were investigated .

  30. 以磷酸氢二铵和偏钨酸铵为原料,采用高纯氢气程序升温还原磷钨酸盐的方法制备了非负载型WP和负载量为30%的负载型WP/γ-Al2O3催化剂。

    Using diammonium phosphate and ammonium metatungstate as raw material , bulk tungsten phosphide catalyst and alumina supported tungsten phosphide catalysts were prepared by temperature-programmed reducing phosphate precursors in hydrogen .