Method for preparing vicinal diol
The direct oxidation of vicinal diols with olefins, oxidants, and haloalcohols under a titanium-silicon molecular sieve catalyst solves the problems of complex processes and low raw material utilization in existing technologies, and achieves high selectivity and low energy consumption in the production of vicinal diols.
CN121949068APending Publication Date: 2026-05-01CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information
- Application Number
- CN202411534015.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-05-01
AI Technical Summary
Technical Problem
Existing technologies for preparing vicinal diols suffer from problems such as complex processes, low raw material utilization, high emissions of waste, and high costs. Furthermore, the catalyst system is complex and difficult to operate.
Method used
The vicinal diol is directly oxidized by contact reaction of olefins, oxidants, and haloalcohols in the presence of titanium silicate molecular sieves and hydrated catalysts. This avoids the need for pre-preparation of epoxides, provides mild reaction conditions, simplifies operation, and improves the conversion and utilization rate of the oxidant.
Benefits of technology
It achieves highly selective production of vicinal diols, reduces separation energy consumption, and is suitable for large-scale industrial applications.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method for preparing vicinal diol, which comprises the following steps: carrying out contact reaction on raw materials containing olefin, an oxidant and halogenated alcohol in the presence of a titanium silicalite molecular sieve catalyst and a hydration catalyst to obtain a vicinal diol-containing product, and has the advantages of mild reaction conditions, simple operation process and high yield. The method has the characteristics of high oxidant conversion rate and effective utilization rate, high vicinal diol selectivity and low product separation energy consumption.
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