Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst
Journal Title: Energy Environmental Protection - Year 2024, Vol 38, Issue 2
Abstract
This study examined the catalytic pyrolysis of kraft lignin using an in-situ generated Fe-based catalyst from iron ore. The fresh and spent catalysts were characterized by a transmission electron microscope to investigate the morphological changes of the catalysts. To evaluate the catalysts′ performance, a segmented pyrolysis reactor coupled with time-of-flight mass spectrometry was employed. The results showed that the fresh catalysts had a particle-like morphology, while the spent catalysts appeared sintered. Compared to unreduced iron ore and commercial Fe_2O_3, reduced iron ore significantly promoted the production of monocyclic aromatic hydrocarbons. A yield of monocyclic aromatic hydrocarbons reached 81% at the optimized reaction temperature of 550 ℃, with benzene, toluene, xylene and trimethylbenzene accounting for 46%, 34%, 13% and 7% respectively. Moreover, the possible pathway for kraft lignin via catalytic pyrolysis was proposed based on dehydroxylation and demethoxylation. This work suggests that a low-cost iron ore catalyst could potentially be applied to pyrolyze kraft lignin to produce valuable bio-based aromatic hydrocarbons.
Authors and Affiliations
ZHANG Jing|School of Mechanical Engineering, Shanghai Jiao Tong University, China, SHEN Yang|School of Mechanical Engineering, Shanghai Jiao Tong University, China, ZHU Linyu|School of Mechanical Engineering, Shanghai Jiao Tong University, China, LIU Haoran*|School of Mechanical Engineering, Shanghai Jiao Tong University, China, China Energy Engineering Group Anhui Electric Power Design Institute Co., Ltd., China, ZHOU Zhongyue*|School of Mechanical Engineering, Shanghai Jiao Tong University, China
Keywords
Related Articles
- EP ID EP737167
- DOI 10.20078/j.eep.20240205
- Views 2
- Downloads 0
Main factors influencing the electro-methanation of CO_2 in microbial electrolytic cells and the role of electron intermediates
Greenhouse gas emissions from fossil fuel combustion have led to global ecological degradation and energy crisis. Therefore, it is urgent to explore new technologies for the conversion, reuse and clean energy production...
Investigation of NO oxidation by non-thermal plasma
Nitrogen oxides in industrial flue gas are an important cause of environmental pollution. Non-thermal plasma technology is widely used to remove pollutants in flue gas, based on the oxidation of active particles. In this...
Fe-doped boron nitride for adsorption of oxytetracycline in pharmaceutical wastewater
To reduce the environmental pollution of oxytetracycline (OTC) in pharmaceutical wastewater, Fe-doped boron nitride nanosheets (Fe-BN) were synthesized in one step with a green and rapid ball milling process, and the ads...
Electrochemical treatment of norfloxacin with Mn/carbon black-nickel foam electrodes
Electrochemical degradation is a promising method for removing organic pollutants from water due to its low carbon footprint and high efficiency. In this study, we prepared Mn/carbon black-nickel foam electrodes using a...
Research progress on the production of multi-carbon products from CO_2 by integrating electrochemical and microbial conversion
Production of high value-added chemicals and fuels from carbon dioxide (CO_2) is an important technology to achieve zero carbon emissions. However, how to efficiently and sustainably convert carbon dioxide into higher va...