分析热解法评价桉树木材木质素含量，并与克拉森和总木质素含量进行比较

IF 1.7 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Journal of Wood Chemistry and Technology Pub Date : 2021-10-13 DOI:10.1080/02773813.2021.1986071

A. Alves, E. F. Cisneros, G. Balmelli, S. M. Poltri, J. Rodrigues

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引用次数: 3

摘要

摘要分析热解可用于测定桉树木材中的木质素含量（Py-木质素），其精度（0.37%）与湿参比法相似。Py木质素结果与Klason（94%）和总木质素含量（95%）之间存在良好的相关性。除了明显的物种特异性偏差外，与总木质素含量相比，观察到1.3%的平均差异，远低于软木（愈创木酚木质素）3.9%的差异。由于桉树的丁香基（S）单元比愈创木酚（G）单元多，这表明通过分析热解，与G单元相比，S单元被高估了，这与之前对不同降解方法（包括热解）的发现一致。

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Assessment of eucalypts wood lignin content by analytical pyrolysis, comparison with Klason and total lignin contents

Abstract Analytical pyrolysis can be used to determine the lignin content (Py-lignin) in eucalypt woods with a precision (0.37%) similar to the wet reference methods. Good correlations were found between the Py-lignin results and Klason (94%) and total lignin contents (95%). Besides apparent species-specific deviations, an average difference of 1.3% compared to the total lignin content was observed, well below the 3.9% difference reported for softwoods (guaiacyl lignin). Since Eucalyptus has more syringyl (S) than guaiacyl (G) units, this suggests that S units are overestimated in comparison to G units by analytical pyrolysis, in line with previous findings for different degradation methods, including pyrolysis.

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来源期刊

Journal of Wood Chemistry and Technology 工程技术-材料科学：纸与木材

CiteScore

3.70

自引率

20.00%

发文量

审稿时长

3 months

期刊介绍： The Journal of Wood Chemistry and Technology (JWCT) is focused on the rapid publication of research advances in the chemistry of bio-based materials and products, including all aspects of wood-based polymers, chemicals, materials, and technology. JWCT provides an international forum for researchers and manufacturers working in wood-based biopolymers and chemicals, synthesis and characterization, as well as the chemistry of biomass conversion and utilization. JWCT primarily publishes original research papers and communications, and occasionally invited review articles and special issues. Special issues must summarize and analyze state-of-the-art developments within the field of biomass chemistry, or be in tribute to the career of a distinguished researcher. If you wish to suggest a special issue for the Journal, please email the Editor-in-Chief a detailed proposal that includes the topic, a list of potential contributors, and a time-line.