Method for recovering and making antimony oxide from antimony pentachloride solution

A technology of antimony pentachloride and antimony oxide, applied in chemical instruments and methods, liquid solution solvent extraction, inorganic chemistry and other directions, can solve the problems of reducing hydrolysis rate, large consumption of sodium hydroxide and hydrochloric acid, environmental and human harm, etc. To achieve the effect of easy control of process conditions, low cost input, and low consumption of raw materials
CN100383053CInactive Publication Date: 2008-04-23JUHUA GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JUHUA GRP
Publication Date
2008-04-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for recovering and making antimony oxide from antimony pentachloride solution which comprises the steps of pretreatment, reduction, hydrolytic decomposition, drying and neutralization, wherein the pretreatment consists of antimony pentachloride effluent liquor vacuum distillation, inorganic acid abstraction and organic solvent extraction.
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Description

technical field

[0001] The invention relates to a method for recovering metals and oxides thereof, in particular to a method for recovering and preparing antimony oxide from antimony pentachloride solution. Background technique

[0002] In the production of fluororefrigerant-12, fluororefrigerant-22, etc., antimony pentachloride is used as the reaction catalyst. During continuous use, the catalyst will gradually accumulate due to the impurities mixed in the raw materials and the by-products generated during the reaction. and fail. The components present in the expired catalyst are quite complex, including pentavalent antimony, trivalent antimony and antimony fluoride chloride (SbCl 5 -nFn, where n=1 to 5) and various organic substances with higher content of hydrogen fluoride and different boiling points are extremely toxic. If it is not treated and regenerated, it will cause great harm to the environment and human beings.

[0003] "Study on the process of preparing antim...

Claims

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