Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The dominating catalytic approach to aromatic hydrocarbons from renewables, deoxygenation of phenol-rich depolymerized lignin bio-oils, is hard to achieve: hydrodeoxygenation (HDO) of phenols typically leads to the loss of aromaticity and to non-negligible fractions of cyclohexanones and cyclohexanols. Here, we report a catalyst, niobia-supported iridium nanoparticles (Ir@NbO), which combines full conversion in the HDO of lignin-derived phenols with appreciable and tunable selectivity for aromatics (25-95%) under mild conditions (200-300 °C, 2.5-10 bar of H). A simple approach to the removal of Brønsted-acidic sites via Hünig's base prevents coking and allows reaction conditions ( > 225 °C, 2.5 bar of H), promoting high yields of aromatic hydrocarbons.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9453801 | PMC |
| http://dx.doi.org/10.1021/acsomega.2c04314 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Single-layer CoMoS anchored on reduced graphene oxide for efficient and stable hydrodeoxygenation of lignin-derived phenolics to arenes.
Bioresour Technol
August 2025
Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006 Hunan, China. Electronic address:
Achieving both high activity and good stability remains a challenge for the design of MoS-based catalysts in the hydrodeoxygenation (HDO) reaction. Herein, a robust catalyst with single-layer CoMoS anchored on hydrophobic reduced graphene oxide (SL-CoMoS/rGO) was fabricated, which exhibited high activity, selectivity and excellent stability in the HDO of lignin-derived phenolics to arenes. Utilizing the HDO of 4-methylphenol as a probe reaction, the catalyst afforded a conversion of 98.
View Article and Find Full Text PDFArtificial Biological Funnel Design Enabled Valorization of Aromatic Derivatives into Catechol.
J Agric Food Chem
August 2025
State Key Laboratory of Synthetic Biology, Tianjin University, Tianjin 300072, China.
Aromatic resources, including lignin-, petroleum-, and plastic-derived aromatic compounds, show great potential as feedstocks for producing aromatic fine chemicals. However, the heterogeneity of lignin and the complex conversion pathways of these aromatic derivatives hinder their value enhancement. In this study, an engineered KT2440 was developed to efficiently convert diverse aromatic derivatives into catechol with an atom-economic conversion.
View Article and Find Full Text PDFCo-enzyme-free, enzymatic synthesis of aldehydes from renewable resources with a new and highly efficient alkene cleaving dioxygenase.
Green Chem
August 2025
Institute of Applied Synthetic Chemistry, TU Wien Getreidemarkt 9 1060 Vienna Austria
Alkene cleaving dioxygenases (ADO), which can oxidatively cleave C[double bond, length as m-dash]C double bonds to the respective carbonyl compounds, may aid in waste stream utilization strategies by valorizing lignin-derived monomers. Here, we present 11 new ADOs and describe the characteristics of the most promising candidate ADO from . ADO shows unprecedented reaction kinetics and a high yield without requiring co-enzymes or co-substrates other than O.
View Article and Find Full Text PDFEngineered grows well on methoxylated aromatics due to its formaldehyde metabolism and stress response.
mSphere
August 2025
Department of Biological Sciences, University of Idaho, Moscow, Idaho, USA.
Lignin is a vast yet underutilized source of renewable energy. The microbial valorization of lignin is challenging due to the toxicity of its degradation intermediates, particularly formaldehyde. In this study, we engineered PA1 to metabolize lignin-derived methoxylated aromatics, vanillate (VA) and protocatechuate (PCA), by introducing the and gene clusters.
View Article and Find Full Text PDFTwo-Dimensional Heterospectral Correlation Analysis Elucidates Photodegradation Pathways of Riverine Dissolved Organic Matter Using Excitation-Emission Matrix and Ultraviolet Spectroscopy.
Anal Chem
August 2025
State Key Laboratory of Environmental Criteriaand Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Photodegradation of dissolved organic matter (DOM) in aquatic environments can alter spectral fingerprints beyond microbial composition changes, which reduces traceback accuracy. Here, photodegradation effects on the fluorescence properties of DOM from typical sources were investigated using fluorescence excitation-emission matrix spectroscopy (EEMs), i.e.
View Article and Find Full Text PDF