Verfahren zur Katalytischen Depolymerisierung eines Ligninderivats und Lignindepolymerisierungsöl

Details

Veröffentlichungs-Nr.

EP4752151

Anmeldetag

26. Juli 2024

Veröffentlichung

30. Januar 2025

Rechtsraum

EP

Abstract

Disclosed in the present invention are a method for catalytic depolymerization of a lignin derivative, and a lignin depolymerization oil. The method relates to the preparation of a lignin depolymerization oil rich in bisphenols with a 1,2-diphenylethane structure and lignin oligomers by performing synergistic catalysis of a transition metal catalyst, a hydrogen donor and an acidic catalyst on a lignin derivative containing a 1,1-diphenylmethane structure in a liquid medium. The present invention achieves directional depolymerization of lignin by catalyzing an aryl migration reaction of the 1,1-diphenylmethane structure. Different from traditional reactions with lignin monophenols as target products, the present invention can achieve the directional preparation of bisphenol products in one step, and co-production of the lignin oligomer at the same time. The method involved in the present invention expands the product types of lignin-based bisphenols, and facilitates the applications of catalytically depolymerizing lignin to prepare high-value chemicals, fuels and polymer materials.

Anmelder

Firma

Dalian Institute Of Chemical Physics, Chinese Academy Of Sciences

Land

🇨🇳 China