Tungstic acid

Study on the Physical and Chemical Properties of the High-purity Tungstic Acid

高纯粉状钨酸的某些理化特性研究

Study on Preparing High-purity Tungstic Acid by Homogeneous Reaction

均相反应制备高纯粉状钨酸的工艺研究

Nanoparticle WO_3 Thin Film NO_2 Sensors from White Tungstic Acid

由白钨酸制备WO3纳米颗粒薄膜NO2传感器

Air-acetylene Flame Atomic Absorpion Method to Determine Trace Ca in Tungstic Acid

用空气&乙炔火焰原子吸收法直接测定钨酸中微量钙

Studies on White Powdery Tungstic Acid (ⅹ) & Ion Exchange Properties of white Powdery Tungstic Acid

粉状白钨酸的研究（Ⅹ）&粉状白钨酸的离子交换性能

The preparation of tungstic acid in white and Powderly form

粉状白钨酸的制备

Pure tungsten-bearing compound can be produced from the crude tungstic acid by the existing production technology .

粗钨酸用现行生产工艺可制取纯净的钨化合物；

Studies on Powdery White Tungstic Acid (ⅻ) & Preparation and Properties of Certain Organic Ammonium Polytungstates

粉状白钨酸的研究（Ⅻ）&某些聚钨酸有机铵盐的合成和性质

Studies on white powdery tungstic acid VI. PMR study of several metatungstates

粉状白钨酸的研究&Ⅵ.多种偏钨酸盐的PMR谱研究

Catalytic synthesis of glutaraldehyde with tungstic acid

钨酸均相催化法合成戊二醛

This paper introduces the digestion technology of mechanical activation in lieu of that of alkali boiling for manufacturing tungstic acid .

本文介绍在复盐法生产钨酸中用机械活化浸取工艺代替碱煮浸取工艺的新方法。

Studies on White Powdery Tungstic Acid (ⅳ) & Preparation of Ammonium Metatungstate and Study on its Polycrystalline X-ray Diffraction Pattern

粉状白钨酸的研究（Ⅳ）&偏钨酸铵的制备及多晶X光衍射图谱的指标化

The research on the stability of TiO_2 , MoO_3 , PEO doped four-member tungstic acid Sols

TiO2，MoO3，PEO掺杂的四元钨酸溶胶的稳定性研究

Studies on White Powdery Tungstic Acid (ⅴ) & Direct Preparation of 12-Tungstophosphoric Acid from White Powdery Tungstic Acid and Its Purification through n-Butyl Ether Extraction

粉状白钨酸的研究（Ⅴ）&12-钨磷酸的直接制备以及用正丁醚的提纯法

By using phospho - tungstic acid as catalyzer , urea peroxide as oxidant and methanol as solvent , styrene has been oxidized .

以磷钨酸为催化剂，过氧化尿素为氧化剂，甲醇作为溶剂，对苯乙烯进行环氧化反应。

In this study , tungsten trioxide EC films were successfully prepared via sol-dip-coating method and sol-electrophoretic method using stable tungsten trioxide sol synthesized by tungstic acid .

本实验以钨酸为原料成功的配制出了性能稳定的氧化钨溶胶，采用溶胶浸渍提拉方法和电泳沉积方法制备出了氧化钨电致变色薄膜。

The optimal ratio of hydrazine , oxalic acid and tungstic acid was determined to be 1.0 ∶ 4.0 ∶ 0.5 . Temperature and time of thermal decomposition were experimentally found to affect the properties of the product too .

确定钨酸、肼、草酸的最佳比例（物质的量比）为1.0∶4.0∶0.5.实验发现，热分解温度、热分解时间对产品性状有一定的影响。

The high-quality tungstic acid powder was produced by improving the traditional metallurgy of tungsten . This improved process offers the advantages of simple flowsheet , low cost and suitability for the technology transformation of the medium and small smeltery of tungsten .

本文提出，在钨冶炼经典工艺的基础上，进行改革，生产高质量的粉状钨酸，该工艺流程短、收率高、成本低，适于中小钨冶炼厂的技术改造。

The photocatalytic activity in the gas phase was discussed . The results showed that the highly crystalline nanorods WO_3 were prepared from hydrothermal tungstic acid at 265 ℃ and by microwave desiccation . It had smaller crystallite size and higher photocatalytic activity .

结果表明265℃水热钨酸以微波干燥可以制备高结晶纳米棒WO3，产品晶粒小，有较高光催化活性。

Synthesis of bisphenol AP by using phosphato & tungstic heteropoly acid as catalyst

磷钨杂多酸催化剂催化合成双酚AP的研究

And the yield of adipic acid was above 80 % using phenol-weakly acidic compound as additives and was up to 81.5 % when the tungstic acid-sulfosalicylic acid catalyst system was recycled 5 times .

以酚类-弱酸性化合物为添加剂时，己二酸分离产率均在80%以上。钨酸-磺酸水杨酸催化体系重复使用至第5次，己二酸分离产率仍可达81.5%。