Journal ArticleDOI
Integrated Production of Aromatic Amines and N-Doped Carbon from Lignin via ex Situ Catalytic Fast Pyrolysis in the Presence of Ammonia over Zeolites
TLDR
In this paper, the authors proposed a new route for lignin valorization by which aromatic amines can be directly produced from Lignin by ex situ catalytic fast pyrolysis with ammonia over zeolite catalysts.Abstract:
Due to the irregular polymeric structure and carbon based inactive property, lignin valorization is very difficult. In this study we proposed a new route for lignin valorization by which aromatic amines can be directly produced from lignin by ex situ catalytic fast pyrolysis with ammonia over zeolite catalysts. Meanwhile, the obtained pyrolytic biochar can be activated to produce high surface area N-doped carbon for electrochemical application. Wheat straw lignin served as feed to optimize the pyrolysis conditions. MCM-41, β-zeolite, HZSM-5, HY, ZnO/HZSM-5, and ZnO/HY were screened, and ZnO/HZSM-5 (2 wt % Zn, Si/Al = 50) showed the optimal reactivity for producing aromatic amines due to the desired pore structure and acidity. Temperature, residence time, and ammonia content in the carrier gas displayed significant effects on the product distribution. The maximum yield of aromatic amines was obtained at moderate temperatures around 600 °C, 0.57 s, and 75% ammonia in the carrier gas. Under the optimized con...read more
Citations
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Journal ArticleDOI
Lignin valorization for the production of renewable chemicals: State-of-the-art review and future prospects.
Leichang Cao,Iris K.M. Yu,Yaoyu Liu,Xiuxiu Ruan,Daniel C.W. Tsang,Andrew J. Hunt,Yong Sik Ok,Hocheol Song,Shicheng Zhang +8 more
TL;DR: This paper summarizes the research advances in the utilization of lignin resources (mainly in the last three years), with a particular emphasis on two major approaches of lIGNin utilization: catalytic degradation into aromatics and thermochemical treatment for carbon material production.
Journal ArticleDOI
Downstream processing of lignin derived feedstock into end products.
TL;DR: It is hoped this review will stimulate further advances in the sustainable production of value-added products from lignin to integrate this invaluable "bio-waste" into the chemical/materials supply chain.
Journal ArticleDOI
The structure evolution of biochar from biomass pyrolysis and its correlation with gas pollutant adsorption performance
TL;DR: The evolution behavior of physical-chemical structure for biochar during pyrolysis and modification of biochar and its application as sorbent for gas pollutant were reviewed.
Journal ArticleDOI
Preparation and Application of Biochar-Based Catalysts for Biofuel Production
Feng Cheng,Xiuwei Li +1 more
TL;DR: In this article, two main methods for biochar synthesis, namely conventional pyrolysis and hydrothermal carbonization (HTC), are described, and the influences of biomass nature and reaction conditions, especially temperature, are discussed.
Journal ArticleDOI
Advancement in technologies for the depolymerization of lignin
TL;DR: The present contribution aims to critically review recent advancements in biological, thermochemical and electrochemical strategies for lignin depolymerization mainly focusing on enzymatic, acid/base/metal-catalyzed, and microwave-assisted degradation approaches.
References
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Journal ArticleDOI
Catalytic Transformation of Lignin for the Production of Chemicals and Fuels
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