Pyrolysis of boron-crosslinked lignin: Influence on lignin softening and product properties

被引：8

作者：

Dong Z. ^{[1
]}

Yang H. ^{[1
]}

Liu Z. ^{[1
]}

Chen P. ^{[1
]}

Chen Y. ^{[1
]}

Wang X. ^{[1
]}

Chen H. ^{[1
]}

Wang S. ^{[2
]}

机构：

[1] State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan

[2] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou

来源：

Bioresource Technology | 2022年 / 355卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Ammonium borate addition; B-doped char; Bio-oil; Lignin; Low temperature softening; Pyrolysis;

D O I：

10.1016/j.biortech.2022.127218

中图分类号：

学科分类号：

摘要：

In this study, ammonium borate was used as an additive to inhibit lignin softening during the pyrolysis process, and the influence on the pyrolysis process and product characteristics were investigated with potential mechanism being explored in depth. Results showed that with boron addition, glassy transition temperature and thermal stability of lignin increased, and the yield of gas and liquid decreased, while the content of CO, CO2 and H2 increased. Simultaneously, liquid oil showed higher content of simple phenols, especially the diphenols which the maximum reached 80% with 3%BN at 650 ℃, while the yield of heavy components (300 ∼ 400 Da) decreased. With regard to B-doped char, oxygenic groups and specific surface area (509 m2/g of 5%BN at 650 ℃) increased greatly. Increasing temperature promoted the transformation of B doping form from BC2O to BCO2. © 2022 Elsevier Ltd

引用

共 42 条

[1] Bai X., Xue Y., CHAPTER 4 Transport and secondary reactions of depolymerized/deconstructed species, Fast Pyrolysis of Biomass: Advances in Science and Technology, pp. 57-77, (2017)
[2] Bajpai P., Biotechnology for pulp and paper processing, (2018)
[3] Chen J., Li Y., Zhang Y., Zhu Y., Preparation and characterization of graphene oxide reinforced PVA film with boric acid as crosslinker, J. Appl. Polym. Sci., 132, 22, (2015)
[4] Cheng Y., Pang K., Xu X., Yuan P., Zhang Z., Wu X., Zheng L., Zhang J., Song R.J.C., Borate crosslinking synthesis of structure tailored carbon-based bifunctional electrocatalysts directly from guar gum hydrogels for efficient overall water splitting., 157, pp. 153-163, (2020)
[5] Dong Z., Liu Z., Zhang X., Yang H., Li J., Xia S., Chen Y., Chen H., Pyrolytic characteristics of hemicellulose, cellulose and lignin under CO2 atmosphere, Fuel, 256, (2019)
[6] Dong Z., Yang H., Liu Z., Chen P., Chen Y., Wang X., Chen H., Effect of boron-based additives on char agglomeration and boron doped carbon microspheres structure from lignin pyrolysis, Fuel, 303, (2021)
[7] Dufour A., Castro-Diaz M., Marchal P., Brosse N., Olcese R., Bouroukba M., Snape C., In situ analysis of biomass pyrolysis by high temperature rheology in relations with 1H NMR, Energy Fuels, 26, 10, pp. 6432-6441, (2012)
[8] Enterria M., Pereira M.F.R., Martins J.I., Figueiredo J.L., Hydrothermal functionalization of ordered mesoporous carbons: The effect of boron on supercapacitor performance, Carbon, 95, pp. 72-83, (2015)
[9] Hu J., Jiang B., Liu J., Sun Y., Jiang X., Influence of interactions between biomass components on physicochemical characteristics of char, J. Anal. Appl. Pyrol., 144, (2019)
[10] Jiang X., Lu Q., Hu B., Liu J., Dong C., Yang Y., Intermolecular interaction mechanism of lignin pyrolysis: A joint theoretical and experimental study, Fuel, 215, pp. 386-394, (2018)

← 1 2 3 4 5 →