Solution containing vanadium oxalate and preparation method thereof

A technology of vanadium oxalate and solution is applied in the field containing low-price vanadium, and can solve the problems such as hindering the application pace of low-price vanadium, complex and difficult industrial preparation methods of low-price vanadium instability, etc.

Inactive Publication Date: 2009-02-11
郑德龙
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  • Abstract
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Problems solved by technology

[0003] However, the instability of low-valent vanadium and the complexity and difficulty of...

Method used

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Embodiment 1

[0018] 350 g H 2 C 2 o 4 2H 2 Add O (oxalic acid) to 3000 grams of tap water and heat to H with stirring. 2 C 2 o 4 2H 2 O is completely dissolved; divide 100 grams of pure V 2 o 5 (vanadium pentoxide) is added in the above-mentioned solution, treats the V that adds each time 2 o 5 After complete dissolution, add the next batch of V 2 o 5 , up to 100 g V 2 o 5 All dissolved. The resulting solution is a blue vanadium oxalate (IV) solution; then, adding a total amount of 230 grams of Na in the resulting solution in batches 2 S 2 o 4 (Sulphur powder), after it is completely dissolved, it becomes a green solution containing vanadium (III) oxalate.

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Abstract

The invention provides solution containing oxalic vanadium, which is characterized in that the oxalic vanadium is oxalic trivalent vanadium (oxalic vanadium (III)), the molecular formula is V2 (C2O4)3. Meanwhile, the preparation method of the solution containing oxalic vanadium is provided, which comprises the following steps: firstly, the oxalic vanadium is dissolved in water, the vanadium pentoxide is added for reaction, and then the sodium dithionite is added for reaction. The invention has the advantages that the simple reduction method is adopted to acquire the solution containing oxalic trivalent vanadium, and an excellent intermediate is provided for the preparation of the organic low valent vanadium and complex. The invention can be used for synthesizing the products such as vanadium (III) ethyl hexoate and organic vanadium (III) accelerator.

Description

technical field [0001] The invention relates to a solution containing low-valent vanadium, in particular to a solution containing trivalent vanadium oxalate and a preparation method thereof. Background technique [0002] Low-priced vanadium has strong reducibility and is used as a catalyst in the chemical industry with remarkable performance. Due to the unique properties of low-valent vanadium in the redox system, its economy and practicability, its research and application have been in the development stage in the world. The application value of inorganic compounds, organic synthesis and complexes of low-priced vanadium has been increasingly recognized by the field of new chemical industry. [0003] However, the instability of low-priced vanadium and the complexity and difficulty of the reported industrial preparation methods hinder the application of low-priced vanadium. Contents of the invention [0004] The object of the present invention is to provide a solution con...

Claims

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Application Information

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IPC IPC(8): C07C55/06C07C51/41C07C51/50
Inventor 郑德龙
Owner 郑德龙
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