Catalytic depolymerization of kraft lignin was successfully carried out in isopropanol/water mixture system over Rh/LaO/CeO-ZrO catalyst at 373 °C for 2 h with Fe as reductant. The selectivity of in-situ H was increasing from 67 wt% to 98 wt% by changing the proportion of isopropanol and water with metal Fe. A one-to-one correspondence was established between liquid products distribution and H. It was an efficient method for predicting the composition of the liquid oil by H selectivity detection or converting kraft lignin to desirable liquid products optionally, which administered to reduce the dependence on the specific catalysts. Other temperatures and catalysts were a viable option for the relationship.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2018.03.062 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Carbon dioxide-mediated catalytic pyrolysis of lignin in syngas production.
Int J Biol Macromol
January 2025
Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea. Electronic address:
Kraft lignin (KL), a byproduct of the pulp and paper industry, is commonly combusted as a low-grade fuel. However, its high sulphur content results in the emission of sulphur oxides, which pose environmental hazards. This study explores a sustainable approach for the valorisation of waste KL into syngas via CO-mediated pyrolysis.
View Article and Find Full Text PDFThe morphology and structure of zero-valent iron nanosheets promote the activation of persulfate for degradation of ciprofloxacin.
Environ Res
January 2025
Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457, PR China. Electronic address:
Herein, a biochar-supported zero-valent iron (ZVI) nanosheet catalyst (Fe@BC) for the activation of persulfate to degrade ciprofloxacin (CIP) was prepared using industrial kraft lignin and Fenton sludge as carbon and iron sources, respectively. Fe@BC showed considerably better CIP degradation efficiency (96.9% at 20 mg L) than traditional catalysts.
View Article and Find Full Text PDFEnhancing electrochemical performance of lignin-based carbon fibrous aerogels via boron doping.
Int J Biol Macromol
January 2025
Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. Electronic address:
Self-supported hardwood kraft lignin (HKL)/graphene-based carbon fibrous aerogel (L/GCA) presents a fascinating prospect as the electrode of supercapacitor due to its impress rate capacity and cyclic stability. However, the hydrophobicity nature of L/GCA hampers the ion transfer between the electrode and electrolyte, thereby limiting its electrochemical performance. To address this, we enhanced the electrochemical performance of L/GCA through boron doping based on the improvement of hydrophilicity and the re-arrangement of electron density.
View Article and Find Full Text PDFTransparent cellulose-lignin films containing Fe with high UV absorption for thermal management.
Int J Biol Macromol
January 2025
Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China. Electronic address:
In this paper, cellulose-lignin films containing Fe were prepared by the codissolution-precipitation method, and the films have high transparency as well as high UV absorption. In this process, kraft lignin chelates with Fe and then bonds with cellulose through hydrogen bonding, evenly distributing within the film. The morphological results showed that the kraft lignin chelated with Fe bound tightly linked to cellulose within the Fe@cellulose-lignin composite films.
View Article and Find Full Text PDFChemical Modification of Softwood Kraft Lignin with Succinic Acid.
ACS Omega
December 2024
Programa de Engenharia de Processos Químicos e Bioquímicos, Escola de Química, Centro de Tecnologia, Universidade Federal Do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Bloco E, Ilha do Fundão, Rio de Janeiro 21941-909, Brasil.
This work explored the chemical modification of lignin with succinic acid for the first time. Temperature is crucial for the process, reducing reaction time and increasing conversion. In particular, at 160 °C for five h with 0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!