Production of phenols from lignin via depolymerization and catalytic cracking

T Yoshikawa, T Yagi, S Shinohara, T Fukunaga… - Fuel processing …, 2013 - Elsevier
Production of phenols from lignin was investigated using a new conversion process consisting
of two reaction steps. In the first step, depolymerization of lignin was carried out in an …

A metal-free, high nitrogen-doped nanoporous graphitic carbon catalyst for an effective aerobic HMF-to-FDCA conversion

…, YT Liao, TC Kang, JE Chen, T Yoshikawa… - Green chemistry, 2016 - pubs.rsc.org
We report a metal-free catalysis of the aerobic oxidation of 5-hydroxymethylfurfural (HMF) to
2,5-furandicarboxylic acids (FDCA), employing zeolitic-imidazole framework (ZIF-8) derived, …

Production of phenols from lignin-derived slurry liquid using iron oxide catalyst

T Yoshikawa, S Shinohara, T Yagi, N Ryumon… - Applied Catalysis B …, 2014 - Elsevier
A two-step process consisting of depolymerization and catalytic cracking without hydrogen
addition was carried out to produce phenols from lignin. In the first step, lignin was …

Production of ketones from pyroligneous acid of woody biomass pyrolysis over an iron-oxide catalyst

D Mansur, T Yoshikawa, K Norinaga, J Hayashi… - Fuel, 2013 - Elsevier
Catalytic upgrading of pyroligneous acid, by-product from slow pyrolysis of woody biomass
for char production, was carried out using zirconia-supported iron-oxide catalysts under a …

Conversion of glycerol into allyl alcohol over potassium-supported zirconia–iron oxide catalyst

A Konaka, T Tago, T Yoshikawa, A Nakamura… - Applied Catalysis B …, 2014 - Elsevier
The catalytic conversion of glycerol was performed with iron oxide-based catalysts for production
of allyl alcohol using a fixed-bed flow reactor at 623 K under atmospheric pressure. The …

Hydrogen peroxide assisted selective oxidation of 5‐hydroxymethylfurfural in water under mild conditions

…, A Fatehmulla, WA Farooq, T Yoshikawa… - …, 2018 - Wiley Online Library
An effective and selective method for the oxidation of 5‐hydroxymethylfurfural (HMF) by
using hydrogen peroxide (H 2 O 2 ) as the liquid oxygen source and activated‐carbon‐…

Successful selective production of vanillic acid from depolymerized sulfite lignin and its application to poly (ethylene vanillate) synthesis

Y Higuchi, H Ishimaru, T Yoshikawa, T Masuda… - Bioresource …, 2023 - Elsevier
Towards lignin upgrading, vanillic acid (VA), a lignin-derived guaiacyl compound, was
produced from sulfite lignin for successfully synthesizing poly(ethylene vanillate), an aromatic …

Catalytic transalkylation of alkylphenol to phenol in supercritical benzene fluid over MFI type zeolite in a fixed-bed reactor: Diffusion and reaction limitations

JAH Gaitan, Y Nakasaka, T Yoshikawa… - Chemical Engineering …, 2023 - Elsevier
The transalkylation reaction kinetics of 4-propylphenol (ppp) and supercritical benzene (11.0
MPa) over H-MFI-type zeolites, using different particle size and Si/Al ratios, in the …

Determination of carbonyl functional groups in lignin-derived fraction using infrared spectroscopy

…, S Sato, Y Kawamata, Y Koyama, T Yoshikawa… - Fuel, 2022 - Elsevier
Carbonyl functional groups contained within lignin-derived fractions were examined using
Fourier-transform infrared spectroscopy (FT-IR). The absorption of carbonyl in lignin-derived …

Efficient liquid-phase hydrogenolysis of a lignin model compound (benzyl phenyl ether) using a Ni/carbon catalyst

…, TC Kang, ZY Wang, T Yoshikawa… - Reaction Chemistry & …, 2019 - pubs.rsc.org
We propose an efficient liquid-phase hydrogenolysis system for the selective cleavage of an
α-O-4 lignin model compound, benzyl phenyl ether (BPE), under mild conditions. By …