Article
Thermodynamics
Dengyu Chen, Kehui Cen, Xiaozhuang Zhuang, Ziyu Gan, Jianbin Zhou, Yimeng Zhang, Hong Zhang
Summary: This study investigated the pyrolysis behavior and product of the three major components of biomass. The results showed that their characteristics and thermal stability were related to their unique chemical structures. Different volatiles were generated during pyrolysis, and the thermal decomposition pathways of cellulose, hemicellulose, and lignin were proposed.
COMBUSTION AND FLAME
(2022)
Article
Chemistry, Analytical
Liangliang Tao, Xianming Ma, Lihui Ye, Jingwen Jia, Lu Wang, Peiyong Ma, Jian Liu
Summary: The study found that lignin and hydrogen-rich LDPE have a synergistic effect in catalytic co-pyrolysis, which can lower the pyrolysis starting temperature and accelerate the pyrolysis rate. HZSM-5 catalysis significantly reduces the activation energy of the reaction, shifting the composition of pyrolysis products towards alkanes and aromatics.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Agricultural Engineering
Ti-Peng Wang, Hang Li, Jiang-Meng Yuan, Wen-Xin Li, Kai Li, Yao-Bing Huang, Ling-Ping Xiao, Qiang Lu
Summary: Pine lignin has the highest G unit content and best thermal stability; bamboo lignin has uniform molecular distribution and a high pCA unit content; poplar lignin contains abundant PB and S units, with phenol as the main pyrolytic product.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Analytical
Lijuan Zhang, Cheolyong Choi, Hiroshi Machida, Koyo Norinaga
Summary: The study proposes an integrated process for valorizing lignin, which involves catalytic hydrogenation and subsequent fast pyrolysis. Hydrogenated lignin shows increased reactivity in thermal decomposition, with higher yields of light olefins and promotion of alkanes, benzene, and toluene formation. This novel and efficient pretreatment method provides valuable insights for future research on lignin valorization.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Energy & Fuels
Kanit Soongprasit, Viboon Sricharoenchaikul, Duangduen Atong
Summary: Organosolv lignin extracted from sugarcane bagasse and commercial grade lignin were used as starting materials in this study. The addition of ZSM-5 catalysts enhanced the transformation of aromatic furan and monolignol to hydrocarbon species, with maximum aromatic production found at specific B:C ratios. ZSM-5 also showed instinctive performance on MAHs and PAHs production, although polymerization between MAHs resulting in PAHs was observed.
Article
Multidisciplinary Sciences
Sagar V. Kanhere, Graham W. Tindall, Amod A. Ogale, Mark C. Thies
Summary: This study investigates the conversion of lignin from poplar into carbon fibers and its importance. The researchers found that the Aqueous Lignin Purification with Hot Agents (ALPHA) process could effectively purify and fractionate hybrid poplar lignin. The resulting high molecular weight fraction had very low sugar and ash content, and could be spun into stable carbon fibers. The strength and modulus of these carbon fibers were double those achieved with neat poplar lignin, and the stabilization time was reduced by a factor of five.
Article
Energy & Fuels
Samy Yousef, Ieva Kiminaite, Justas Eimontas, Nerijus Striugas, Mohammed Ali Abdelnaby
Summary: The catalytic pyrolysis process was used to decompose the organic fraction of end-of-life glass fibre-reinforced epoxy resin composites (GFRP) and recover phenol. The catalyst concentration had a significant impact on the pyrolysis kinetics and yield.
Article
Green & Sustainable Science & Technology
Dan Li, Shijun Lei, Ping Wang, Lei Zhong, Wenchao Ma, Guanyi Chen
Summary: Pyrolysis is a promising technology for recovering valuable hydrocarbons from waste streams. This study investigated three types of waste plastics and their mixed forms to explore thermal cracking features, products distribution, and kinetic features. Results showed differences in pyrolysis products and reaction processes among different types of plastics, with synergistic effects observed during co-pyrolysis processes.
Article
Thermodynamics
Zhanshi Ni, Haobo Bi, Chunlong Jiang, Hao Sun, Wenliang Zhou, Zhicong Qiu, Liqun He, Qizhao Lin
Summary: Thermogravimetric-Fourier transform infrared spectrometry was used to investigate the co-pyrolysis of coal slime and lignin in this study. The composition and evolution of gaseous products during the pyrolysis process were analyzed, as well as the influence of lignin content. An artificial neural network prediction model with a relative error less than 2.5% was established.
Article
Thermodynamics
Fangyu Fan, Zongling Yang, Xianjun Xing
Summary: Corn straw, as a large-yield agricultural waste, can be thermochemically treated for comprehensive utilization. Advanced techniques like TG-FTIR and TG-GC/MS were used to analyze the pyrolysis process more clearly. Results showed that the pyrolysis of corn straw leads to the production of various volatile organic compounds, with significant changes in composition at different temperatures.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Yuan Jiang, Peijie Zong, Xue Ming, Haixin Wei, Xin Zhang, Yuan Bao, Bin Tian, Yuanyu Tian, Yingyun Qiao
Summary: The study investigated the influence of temperature and particle size on the high-temperature fast pyrolysis behaviors of Shenmu(Yulin) coal. Results showed that different parameters led to varied yields of coal-char, coal-tar, and coal-gas, with the particle size affecting coal-char and coal-tar differently.
Article
Energy & Fuels
Malgorzata Labus
Summary: This study focused on the decomposition reactions of pyrite under different atmospheres, in kerogen and bulk source rock, and the evolved gases. The results showed that only SO2 gas was detected during pyrite decomposition. Pyrite content over 10% in a rock sample can be detected, and SO2 is released during combustion and pyrolysis processes.
Article
Energy & Fuels
Quoc Khanh Tran, Hoang Vu Ly, Hyun Tae Hwang, Jinsoo Kim, Seung-Soo Kim
Summary: The study investigated the pyrolysis characteristics and kinetics of Organosolv lignin from pine trees using various methods, determining activation energies and reaction pathways. The main products of pyrolysis were phenol and guaiacol derivatives, with some depolymerization into lower-molecular-weight components. The effects of alkali and alkaline earth metals on pyrolysis were also studied, with magnesium showing the most effectiveness in reducing activation energy.
Article
Green & Sustainable Science & Technology
Justas Eimontas, Samy Yousef, Nerijus Striugas, Mohammed Ali Abdelnaby
Summary: Caprolactam is the main compound in waste fishing nets (WFNs) and its recovery through catalytic pyrolysis can extract high yields of caprolactam for various applications in the production of nylon fibers, films, textiles, and resins. The study conducted experiments using ZSM-5 catalyst at different heating rates, revealing that ZSM-5/WFNs samples showed consistent activation energies and high prediction accuracy with the DAEM and IPR models, suggesting the potential of catalytic pyrolysis technology in WFNs recycling.
Article
Agricultural Engineering
Bochao Yan, Xiaoyu Lin, Zhihui Chen, Qinjie Cai, Suping Zhang
Summary: A non-precious carbon-based metal-Mo2C catalytic system has been developed for the selective production of phenolic monomers from organosolv lignin depolymerization. The optimized Ni-Fe-Mo2C catalyst achieved high liquefaction and phenolic monomer yields in a water-methanol solvent. The results demonstrate the potential of the Ni-Fe-Mo2C catalytic system for valuable phenolic monomer production from lignin under mild conditions.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)