Lignin Depolymerization to Dicarboxylic Acids with Sodium Percarbonate

Redox Catalysis Facilitates Lignin Depolymerization

Lignin is a recalcitrant and underexploited natural feedstock for aromatic commodity chemicals, and its degradation generally requires the use of high temperatures and harsh reaction conditions. Herein we present an ambient temperature one-pot process for the controlled oxidation and depolymerization of this potent resource. Harnessing the potential of electrocatalytic oxidation in conjugation ...

Hydrogen Peroxide, Peracetic Acid and Sodium Percarbonate

Depolymerization of Lignin in Wood with Molecular Hydrogen Iodide

Depolymerization of lignin in wood with hydrogen iodide in a nonpolar solvent is a selective, high-yield reaction that releases a diiodide of potential synthetic value into the solution. Finely milled wood (Douglas-fir, spruce, aspen, and sugarcane), was suspended in CDCl3 and treated with dry hydrogen iodide in a NMR tube. The yields and composition of the chloroform-soluble monomeric lignin d...

Nucleation of dicarboxylic acids

Homogeneous vs. heterogeneous nucleation in water-dicarboxylic acid systems A. I. Hienola, H. Vehkamäki, I. Riipinen, and M. Kulmala Department of Physics, Division of Atmospheric Sciences and Geophysics, University of Helsinki, P.O. Box 64, 00014 University of Helsinki, Finland Received: 28 March 2008 – Accepted: 2 September 2008 – Published: 21 October 2008 Correspondence to: A. I. Hienola (a...

Tandem Catalytic Depolymerization of Lignin by Water‐Tolerant Lewis Acids and Rhodium Complexes

Lignin is an attractive renewable feedstock for aromatic bulk and fine chemicals production, provided that suitable depolymerization procedures are developed. Here, we describe a tandem catalysis strategy for ether linkage cleavage within lignin, involving ether hydrolysis by water-tolerant Lewis acids followed by aldehyde decarbonylation by a Rh complex. In situ decarbonylation of the reactive...