一种铈铁固溶体催化剂的制备方法及应用

By preparing cerium-iron solid solution catalysts through eutectic solvent regulation, the problems of low conversion rate and poor selectivity in the cyclohexane oxidation process were solved, realizing the preparation and use of efficient and environmentally friendly catalysts, and improving the conversion rate of cyclohexane and the selectivity of KA oil.

CN118022750BActive Publication Date: 2026-07-17INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
Filing Date
2022-11-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing cyclohexane oxidation processes suffer from low conversion rates, poor selectivity, low energy efficiency, and generate a large amount of byproducts and waste. Furthermore, traditional heterogeneous catalysts are costly and have poor recyclability, making it difficult to meet the requirements of green chemistry.

Method used

A cerium-iron solid solution catalyst was prepared using a eutectic solvent-assisted method. The catalyst formation process was controlled by forming a eutectic solvent with choline chloride and an organic polybasic acid. A Prussian blue analogue was prepared and calcined to obtain the cerium-iron solid solution catalyst.

Benefits of technology

It improves the conversion rate of cyclohexane and the selectivity of KA oil, reduces the preparation cost, meets the requirements of green chemistry, and has good catalyst recycling performance.

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Abstract

本发明涉及一种铈铁固溶体催化剂的制备方法,其包括以下步骤:将可溶性铈源、低共熔溶剂、水和乙醇混合,得到溶液A,其中,所述低共熔溶剂为氯化胆碱与有机多元酸形成的低共熔溶剂;将铁氰化合物加入水中,得到溶液B;将溶液B加入溶液A中,搅拌得到混合溶液,静置陈化,得普鲁士蓝类似物;将所述普鲁士蓝类似物焙烧,获得所述铈铁固溶体催化剂。以及,提供上述方法获得的铈铁固溶体催化剂在催化环己烷氧化中的应用。该方法使用绿色廉价的低共熔溶剂调控制备催化剂,方法简单,成本低,解决了现有催化剂收率低、选择性差等难题。
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