Stannous oxide and method for producing same

A technology of tin monoxide and a manufacturing method, applied in the directions of tin oxide, chemical instruments and methods, and chemical methods for reacting liquids with liquids, etc., can solve problems such as difficulty in reducing chloride ions or sulfate ions, and achieve excellent solubility. Effect
CN110997570APending Publication Date: 2020-04-10JX NIPPON MINING & METALS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JX NIPPON MINING & METALS CORP
Publication Date
2020-04-10

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Abstract

Provided is a method for producing stannous oxide, comprising a step for subjecting stannous sulfate to neutralization in an aqueous solution using ammonium carbonate or ammonium bicarbonate, and thereby precipitating stannous oxide. This production method is a novel means for producing stannous oxide in which chlorine, sulfur, sodium, and potassium are sufficiently reduced, and which has excellent solubility.
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Description

technical field

[0001] The present invention relates to a kind of tin oxide and its preparation method. Background technique

[0002] When performing tin plating, there are cases where an insoluble electrode (platinum, noble metal oxide, etc.) is used as an anode instead of metallic tin. At this time, tin monoxide is often added to replenish tin ions consumed from the electrolytic solution. Tin monoxide (SnO) and tin dioxide (SnO 2 ) is faster than the dissolution rate, and it is easy to make a replenishment solution.

[0003] In order to produce soluble tin oxide, it has been considered ideal to use tin chloride as the starting material. Therefore, for example, Patent Document 1 (Japanese Patent No. 6095929) discloses a technique for producing tin monoxide using stannous chloride as a raw material. However, this technique has a disadvantage that it is difficult to sufficiently reduce chlorine, which is an impurity contained in the produced tin monoxide. Therefore, for ...

Claims

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