木质素
分子动力学
动力学(音乐)
化学
纳米技术
环境科学
材料科学
计算化学
有机化学
物理
声学
作者
Chi Ho Lee,Juhyeon Kim,Ji-Ae Ryu,Wangyun Won,Chang Geun Yoo,Joseph Sang‐Il Kwon
标识
DOI:10.1016/j.cej.2024.150680
摘要
Lignin, with its abundant and high energy density, offers potential for sustainable biofuels and chemicals. However, current research faces two primary challenges: limited experimental sampling frequency, impeding the real-time analysis and a lack of theoretical activation energies to elucidate thermodynamic and kinetic properties associated with structural changes under various processing conditions including reaction temperature (343 to 363 K), time (15 to 30 min), and chip size (1.0 to 5.0 mm). To address these challenges, we introduce the "real-time molecular-level sensing approach.", which considers delignification, redeposition, and de/repolymerization over time and various scales, leveraging sparse experimental data and theoretical activation energies. Our approach combines density functional theory, ab-initio molecular dynamics, and kinetic Monte Carlo simulations to deeply explore dynamic nature of lignin. Specifically, we gain insights into lignin content within biomass, molecular weight distribution, and monolignol ratio, improving lignin's utilization during processing. This work establishes a new standard for comprehensive lignin analysis, fostering efficient lignin utilization by tracking their properties at the molecular level in the real-time manner.
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