Effects of cellulose addition on sodium lignosulfonate pyrolysis: Product distribution and formation pathway

IF 1.6 4区工程技术 Q3 ENGINEERING, CHEMICAL

Canadian Journal of Chemical Engineering Pub Date : 2024-08-07 DOI:10.1002/cjce.25450

Lichao Ge, Can Zhao, Yang Wang, Zhifu Qi, Ruikun Wang, Qianqian Yin, Yuli Zhang, Chang Xu

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引用次数: 0

Abstract

Copyrolysis of lignin and cellulose can effectively improve pore structure and optimize product distribution. Therefore, the distribution, characteristics, components, and formation mechanism of the copyrolysis products of cellulose and sodium lignosulfonate were studied. The pyrolysis of sodium lignosulfonate was effectively inhibited by cellulose, especially when the amount of doped cellulose was 40 wt.%, and tubes presumed to be carbon nanotubes were prepared under these conditions. For bio-oil, the contents of phenol, 2-methoxy-, and 4-aminopyridine increased with decreasing amounts of doped cellulose. However, cellulose substantially reduced the content of 2-furanmethanol. H₂, CO₂, CO, and CH₄ were the main components of the biogas; among them, H₂ was the most abundant component in the biogas. Considering the characteristics of the three-phase product, a higher C content in the volatiles (especially bio-oil) can promote the formation of carbon nanotubes. Finally, the formation mechanism and interactions of the main components in the volatiles of cellulose and sodium lignosulfonate were proposed.

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添加纤维素对木质素磺酸钠热解的影响：产物分布和形成途径

木质素和纤维素的复制分解可有效改善孔隙结构并优化产物分布。因此，研究了纤维素和木质素磺酸钠复制分解产物的分布、特征、成分和形成机理。纤维素有效抑制了木质素磺酸钠的热解，特别是当掺杂纤维素的量为 40 wt.% 时，在这种条件下制备出了推测为碳纳米管的管子。在生物油中，苯酚、2-甲氧基和 4-氨基吡啶的含量随着掺入纤维素量的减少而增加。然而，纤维素大大降低了 2-呋喃甲醇的含量。沼气的主要成分是 H2、CO2、CO 和 CH4，其中 H2 的含量最高。考虑到三相产物的特点，挥发物（尤其是生物油）中较高的 C 含量可促进碳纳米管的形成。最后，提出了纤维素和木质素磺酸钠挥发物中主要成分的形成机制和相互作用。

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来源期刊

Canadian Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

3.60

自引率

14.30%

发文量

448

审稿时长

3.2 months

期刊介绍： The Canadian Journal of Chemical Engineering (CJChE) publishes original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes. Preference is given to papers having a clearly indicated scope and applicability in any of the following areas: Fluid mechanics, heat and mass transfer, multiphase flows, separations processes, thermodynamics, process systems engineering, reactors and reaction kinetics, catalysis, interfacial phenomena, electrochemical phenomena, bioengineering, minerals processing and natural products and environmental and energy engineering. Papers that merely describe or present a conventional or routine analysis of existing processes will not be considered.