Method for preparing propylene oxide and co-producing delta-valerolactone by biomimetic catalytic oxidation of propylene

• Main Authors: XIONG CHAO, JI HONGBING
• Format: Patent
• Language: Chinese; English
• Published: 02.07.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a method for preparing epoxypropane and co-producing delta-valerolactone by biomimetic catalytic oxidation of propylene, and aims to provide an epoxypropane preparation method which is high in selectivity, few in byproducts, simple in process flow, high in safety, green and environment-friendly. According to the technical scheme, the method comprises the following steps: (1) dispersing a catalyst and tetrahydropyrane into a solvent in a high-pressure reaction kettle, and sealing a system; (2) introducing propylene, then introducing oxygen, and reacting for 1-10 hours at the pressure of 0.5-2.0 MPa and the temperature of 90-130 DEG C to obtain epoxypropane and co-produce delta-valerolactone; the technology belongs to the technical field of chemical engineering. 本发明公开了一种仿生催化氧化丙烯制备环氧丙烷联产δ-戊内酯的方法，旨在提供一种高选择性、少副产物、工艺流程简单、安全性高、绿色环保的环氧丙烷制备方法。该技术方案包括：(1)在高压反应釜中将催化剂和四氢吡喃分散到溶剂中后封闭体系；(2)通入丙烯，再通入氧气，在压力0.5～2.0MPa、温度90～130℃反应1～10h，得到环氧丙烷并联产δ-戊内酯；该技术属于化学工程技术领域。