文献类型： 外文期刊
作者： Kang, Xiheng 1 ; You, Zi 1 ; Huang, Yongheng 1 ; Peng, Jian 1 ; He, Tieguang 2 ; Su, Tianming 2 ; Li, Yongsheng 3 ; Ragauskas, Arthur J. 4 ; Wang, Shuangfei 1 ; Song, Xueping 1 ; Zhang, Zhanying 7 ;
作者机构： 1.Guangxi Univ, Coll Light Ind & Food Engn, Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Guangxi, Peoples R China
2.Guangxi Acad Agr Sci, Agr Resources & Environm Res Inst, Guangxi Key Lab Arable Land Conservat, Nanning 530007, Guangxi, Peoples R China
3.Guangxi Inst Sci & Technol Dev Co Ltd, Nanning 530022, Guangxi, Peoples R China
4.Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA
5.Oak Ridge Natl Lab, Joint Inst Biol Sci, Biosci Div, Oak Ridge, TN 37996 USA
6.Univ Tennessee, Ctr Renewable Carbon, Dept Forestry Wildlife & Fisheries, Knoxville, TN 37996 USA
7.Queensland Univ Technol, Fac Engn Med & Proc Engn, Sch Mech, Brisbane, Qld 4000, Australia
8.Queensland Univ Technol, Ctr Agr, Brisbane, Qld 4000, Australia
9.Queensland Univ Technol, Bioecon Fac Sci, Brisbane, Qld 4000, Australia
关键词： 5-HMF; biochar; formation mechanism; formic acid; hydrothermal carbonization
期刊名称：SMALL （ 影响因子：12.1； 五年影响因子：12.5 ）
ISSN： 1613-6810
年卷期： 2025 年 21 卷 18 期
页码：
收录情况： SCI
摘要： In the process of hydrothermal carbonization of cellulose to produce biochar, the promotion or inhibition roles of the main hydrolysates of cellulose such as 5-hydroxymethylfurfural (5-HMF), furfural (F), formic acid (FA), and levulinic acid (LA) on biochar formation are still unknown, limiting the development of controllable preparation of biochar. Here, the 5-HMF itself, the mixtures of 5-HMF and F, 5-HMF and FA, as well as 5-HMF and LA are, respectively, used as precursor for the preparation of biochar to elucidate their interactions on biochar formation. Combining the consumption rate of reactants and the physicochemical properties of the resulting biochar, the results have been found that 5-HMF and FA promote the formation of biochar, but F and LA inhibit the formation of biochar. The promoting effect of FA is reflected in its ability to reduce critical aggregation concentration of colloidal particles and improving biochar precipitation. Additionally, FA can react with & horbar;OH on the surface of biochar to form furan & horbar;FA compounds and increase the particle size of biochar and oxygen-containing content (O/C = 0.39). This work is first to elucidate a new pathway of FA effecting biochar formation and provides a new insight for the formation of cellulose-based biochar.
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