A method for preparing tert-dodecyl mercaptan using a modified Y molecular sieve catalyst
By treating the Y molecular sieve with organic acid and pyridine solution, a high activity and long life catalyst was prepared, which solved the problem of high energy consumption caused by the catalyst's ease of deactivation and low temperature reaction in the prior art, and achieved efficient and economical preparation of tert-dodecyl mercaptan.
CN116162048BActive Publication Date: 2025-04-01WANHUA CHEM GRP CO LTD
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Patent Information
- Application Number
- CN202211578538.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-09
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2042-12-09
AI Technical Summary
Technical Problem
In the prior art, when preparing tert-dodecyl mercaptans, the catalyst is prone to deactivate, the product selectivity is not high, and low-temperature reactions lead to high refrigeration energy consumption and increased cost.
Method used
Multi-stage pore Y molecular sieve treated with organic acid and pyridine solutions are used as catalysts to reduce carbon deposits through organic acid treatment, and pyridine solution treatment reduces the side reaction of microporous carbon deposits and TIB cleavage, thereby improving catalyst life and product selectivity.
Benefits of technology
It significantly improves the activity and life of the catalyst, enhances product selectivity, reduces refrigeration energy consumption, and reduces production costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to a method for preparing tert-dodecyl mercaptan using a modified Y molecular sieve catalyst, wherein the modified Y molecular sieve catalyst is used for the reaction of triisobutylene and hydrogen sulfide to prepare tert-dodecyl mercaptan. The method of the present invention has high product selectivity, long catalyst life, low reaction energy consumption, obvious economic advantages, and is particularly suitable for large-scale production.
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