THE METHOD FOR THE PRODUCTION OF AROMATIC COMPOUNDS USING SOLID BASE CATALYST FOR HYDROLYSIS OF B-O-4 LINKAGE OF LIGNIN IN NEAR-CRITICAL WATER

• Main Authors: CHUNG, SANG HO, LEE, KWAN YOUNG, EOM, HEE JUN, HONG, YOON KI
• Format: Patent
• Language: English; Korean
• Published: 07.02.2014
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The present invention relates to hydrolysis of β-O-4 (phenethyl phenyl ether) which is a typical bond in a lignin structure using a solid basic catalyst in near-critical water and more specifically, to a process for producing a low molecular weight aromatic compound by using Na_ZrO2 which is a solid basic catalyst in near-critical water as a heterogeneous catalyst. The process developed by the present invention can obtain styrene and phenol with high yield in near-critical water by using Na_ZrO, a solid basic catalyst. The yield is higher than conventional processes using an acid catalyst in an organic solvent, and the activity of the product is higher than that of a product formed by using alkali salt (NaOH) which is a homogenous basic catalyst, thereby being useful for the selective production of a specific aromatic compound. [Reference numerals] (AA) Aromatic product yield (mol%); (BB) Ethylbenzene; (CC) Styrene; (DD) Phenol; (EE) Reaction time (h); (FF) Conversion rate (%)