Development of Continuous Catalytic Oxidative Processes for ive Conversion Valorization of Lignocellulosic Compounds to Non-toxic Antibacterial Sponge

Application Dept.	Dept. of Chemistry
Principal Investigator	Prof. Chin-Fa Lee ( Personal Webpage )
Project Title	Development of Continuous Catalytic Oxidative Processes for Selective Conversion and Valorization of Lignocellulosic Compounds to Non-toxic Antibacterial Sponge
Co-Principal Investigator	1. A.P. Yi-Chun Chen, Dept. of Forestry 2. Distinguished Prof. Kun-Yi Lin, Dept. of Environmental Eng
Co-Investigator
Abstract	As oxidative conversion of lignin-derived compound, vanillic alcohol (VA), to vanillin aldehyde (VL) represents as a useful process for lignocellulosic biomass valorization. While catalytic aerobic oxidation by Cu and 2,2,6,6-tetramethylpiperidine 1-oxyl (TPO) with O2 as an oxidant is proposed as a promising oxidative process for VA conversion, this conventional Cu/TPO employs homogeneous Cu ions and TPO, making recovery of homogeneous Cu ion and TPO from reaction media extremely challenging. Herein, Cu species and TPO are integrated into a single heterogeneous catalyst through a co- precipitation method to embed TPO into copper benzene-1,3,5-tricarboxylate (CuBTC) metal organic frameworks (MOFs), forming a bifunctional heterogeneous catalyst. The resulting TPO-embedded CuBTC (TEC) retained the typical octahedral morphology and crystalline structure of CuBTC, while encapsulating TPO within CuBTC. The TEC exhibited higher conversion efficiencies of VA than the simple combination of pristine CuBTC and TPO.

Summary