A process for the preparation of pivalic acid and its methyl ester

By using an acidic zeolite molecular sieve catalyst to catalyze the reaction of MTBE and TBA with carbon monoxide under heterogeneous conditions, the problems of high cost and environmental unfriendliness in existing technologies are solved, realizing a highly efficient method for the production of tervastatin and its methyl ester. The catalyst is easy to separate and regenerate, making it suitable for large-scale industrial applications.

CN122102882APending Publication Date: 2026-05-29DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing technologies, the conversion of methyl tert-butyl ether (MTBE) and tert-butanol (TBA) into tert-valerate and its methyl esters has problems such as high cost, environmental unfriendliness, and difficulty in large-scale production. In particular, the method of using HF as a catalyst poses safety hazards, and the reaction involving water increases the separation cost.

Method used

A solid catalyst containing acidic zeolite molecular sieves is used to catalyze the reaction of MTBE and TBA with carbon monoxide under heterogeneous conditions to produce methyl pivalate and pivalic acid. The catalyst is easy to separate and regenerate, avoiding the use of precious metals and harmful catalysts.

Benefits of technology

It achieves highly selective and efficient production of pentovalinic acid and its methyl ester, reduces production costs, reduces emissions of waste, and features a regenerable catalyst and a simple process, with broad prospects for industrial application.

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Abstract

The application discloses a method for preparing methyl tert-butyl ether (MTBE) and / or tert-butyl alcohol (TBA) and belongs to the field of heterogeneous catalytic conversion. The method comprises the following steps: contacting raw material gas containing MTBE and / or TBA, CO and a solid acid catalyst, and reacting to obtain methyl pivalate and / or pivalic acid; the solid acid catalyst comprises an acidic zeolite molecular sieve. The method adopts a molecular sieve catalyst to catalyze the carbonylation of MTBE and TBA under gas-solid phase conditions to generate methyl pivalate and pivalic acid, the selectivity of the products is high, the products are easy to separate from the catalyst, the deactivated catalyst can be regenerated, the process is simple and economical, and a new path for preparing high-value-added chemicals from MTBE and TBA is opened up.
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