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

Progress in analytical methods for impurities in tungsten and tungstic compounds

钨及其化合物中杂质元素分析方法进展

Study and Application of Technology for Violet Tungstic Oxide Preparation

紫色氧化 钨 制取工艺的研究及其应用

A pH sensor was fabricated with tungstic oxide pH electrode and this reference electrode and the inner resistance of this sensor is 22 K Ω much less than that of glass pH meter ( 1 ~ 10 M Ω) .

可用于基于W氧化物pH电极的 电化学传感器，传感器的内阻为 22kΩ，小于玻璃pH电极计内阻（1~10MΩ）。

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

The preparation of tungstic acid in white and Powderly form

粉状白 钨酸的制备

Surface modification was carried out on boron cast surface by argon arc remelting technology . Effect of tungstic electrode argon arc hardening parameters on microstructure and mechanical properties of boron cast iron surface was investigated .

采用氩弧重熔技术在硼铸铁表面进行表面硬化改性处理，研究了 钨极氩弧硬化工艺参数对硼铸铁表面组织和性能的影响。

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

Analytical methods for impurities in tungsten and tungstic compounds in recent 10 years were reviewed Among them were atomic emission spectrometry atomic absorption spectrometry mass spectrometry electrochemical analysis spectrophotometry and activation analysis 53 references were cited

综述了近10多年来 钨及其化合物中杂质元素的分析方法，涉及方法包括原子发射光谱法、原子吸收光谱法、分光光度法、质谱法、电化学分析法以及活化分析法等

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。

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

Based on the current situation we attempt some new methods to prepared hollow silver spheres and rectangular tungstic oxide nanotubes .

基于这种情况，我们就 单质银空球和方形 三氧化钨纳米管的制备 作了一些尝试性的创新工作。

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。

Study on improvement of electrochromic properties of tungstic oxide film by PVA-doping

添加聚乙烯醇改善 三氧化钨电致变色薄膜性能的研究

Application and Research on the Tungstic Catalysts in Petroleum Processing and Petrochemicals

我国石油炼制和化工 中钨的催化应用和研究进展

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；

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。

Catalytic synthesis of glutaraldehyde with tungstic acid

钨酸 均 相催化法合成戊二醛

Resonance Rayleigh Scattering Spectra of Interaction Between Isopoly Tungstic Acid-Amikacin and Its Analytical Application

同多 钨酸-阿米卡星相互作用的共振瑞利散射光谱及其分析应用

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。

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%。

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

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 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

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

Technological practice for producing tungstic trioxide of distinct granular degree with the complex salt method

复盐法生产不同颗粒度 三氧化钨工艺实践

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。