Ruthenium dioxide, its preparation method and application

CN118183882BActive Publication Date: 2026-07-03XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD
Filing Date
2024-03-15
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing methods for preparing ruthenium dioxide suffer from problems such as low preparation efficiency, difficulty in solid-liquid separation, uneven particle size, and high impurity content, and it is difficult to achieve high purity and industrialized production.

Method used

A two-step washing method is adopted, using alternating washing with surfactant aqueous solution and ethanol solution, combined with calcination treatment, to remove impurities and transform granular ruthenium dioxide into rod-shaped particles, thereby improving purity and specific surface area.

Benefits of technology

Ruthenium dioxide with a purity greater than 4N and low sodium and chloride ion content was prepared, which improved the catalytic performance of ruthenium-based catalysts and realized the recycling of ruthenium resources and green and environmentally friendly industrial production.

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Abstract

The present disclosure provides a kind of ruthenium dioxide and its preparation method and application, belong to the technical field of preparation of ruthenium dioxide.The main steps of the present disclosure for preparing ruthenium dioxide are hydrolysis aging, primary washing, calcination, secondary washing;In the process of primary washing and secondary washing, different media are used for washing, to remove impurities in the ruthenium dioxide, and the different media of primary washing can change the morphology of the ruthenium dioxide from granular to rod-shaped, improve the purity, dispersibility and specific surface area of the ruthenium dioxide.
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