钨酸

It is concluded that ions are condensed gradually in the process of heat treatment polytungstate acid,the symmetry of the WO6 octahedral is improved and the strength of the WOWbond is increased.

TG-DTA和IR分析结果表明，随着热处理温度的提高，薄膜中多聚钨酸离子进一步缩合，WO6八面体对称性逐渐增强。

The research developments in synthesis and application of silicotungstate with Keggin-type structure and its derivants used as catalysts in epoxidations of alkenes were reviewed.

综述了近十年来新型 Keggin结构硅钨酸盐及其一系列衍生物催化剂的合成及其在选择氧化反应中应用的研究进展。

The polyaniline hybrid materials doped with cobalt substituted silicotungstate isomers α,β-Kβ(subscript 6-n)H[SiW11Co(H2O)O39]xH2O β(subscript i=β1,β2,β3 have been prepared.

以Keggin结构钴取代杂多硅钨酸盐异构体α，β-K(下标 6-n)H[SiW11Co(H2O)O39]xH2Oβ(下标 i=β1，β2，β3为掺杂剂，采用固相合成法制备了4种聚苯胺掺杂材料。

The silicotungstic acid was used as the photocatalyst to degradation of the methyl orange solution.

以硅钨酸为光催化剂，研究了其对模拟染料废水甲基橙的光催化脱色降解影响。

In this work we exploited both these approaches simultaneously by forming composites with polyvinyl alcohol, zirconium phosphate and cesium salt of silicotungstic acid.

在本研究中我们通过与聚乙烯醇，磷酸锆，和硅钨酸的铈盐形成复合物，同时探索了这两种方法。

Methods:Determination method for diazepam and vitamin B1 were changed from coefficient rate and silicotungstic acid precipitation to HPLC and UV respectively.

地西泮由系数倍率法改为HPLC法；谷维素仍用UV法，溶剂由正庚烷改为硫酸乙醇；维生素B1由硅钨酸沉淀法改为UV法。

Using silicotungstic acid as catalyst with the catalyst supported on active carbon,2-methyl-2-ethyl-acetic-1,3-oxathiolane(targeted compound I,an aroma compound with apple flavor )was synthesized by the reaction of ethyl aceto-acetate and 2-mercapto-ethanol.

以活性炭固载硅钨酸作为催化剂，用乙酰乙酸乙酯与巯基乙醇缩和合成了具有浓郁苹果香气的香料化合物2-甲基-2-乙酸乙酯基-1，3-氧硫杂环戊烷。

Inorganic-organic hybrids were prepared by combining Schiff base complexes of manganese with silicotungstic acid. The composition and structure of the hybrid L^1-Mn-SiW (L^1: N, N'-disalicylidene-1, 6-hexanediamine) were characterized by infrared spectroscopy and thermogravimetry.

将席夫碱锰配合物与硅钨酸结合制备出一种新颖的无机－有机杂化固体催化剂，通过红外光谱和热重表征数据推测出这种催化剂的组成和结构，并将其用于磷酸与等摩尔月桂醇酯化制备长链单烷基磷酸酯。

Aim to the application purpose of all-solid state electrochromic device and electronic link materials, which are prepared on flexible substrate. The tungstenic acid sols doped with PEO, MoO_3 and the PEO6000 nano-sized composite Ni_2 sols were prepared by ionic- changing and alcohol salt hydrolyzing technology of sol-gel method.

本论文以全固态的电致变色显示器件和柔性基板电子墨水显示材料为应用目标，采用溶胶-凝胶技术中的离子交换法和醇盐水解法分别制备了PEO、MoO_3掺杂的钨酸溶胶和PEO掺杂Ni_2的复合溶胶体系。

The clenbuterol and ractopamine of specimen was extracted by 0.5% tungstenic acid: methanol (80:20). It was then purified by Oasis MCX. The mobile phase was 4 mmol/L ammonium acetate: acetonitrile (80:20). PDA detector was used for separation and detection.

采用0.5%钨酸：甲醉(80：20)提取试样中的盐酸克伦特罗和莱克多巴胺，用Oasis MCX小柱净化，4mmol/L乙酸胺溶液：乙腈(80：20)为流动相，用PDA检测器分离测定。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。