Artificial Coal: Facile and Green Production Method via Low-Temperature Hydrothermal Carbonization of Lignocellulose

A new concept is proposed for the production of artificial coal under HTC conditions using Mg(NO3)2 as an oxidant in a short time, which is found to enhance the coalification degree of hydrochar from lignocellulosic materials. Pressure promotes decarboxylation reactions of lignocellulose to form hollow smooth-faced regular spherical particles, avoiding the agglomeration of hydrochar particles. In parallel, oxidation can break down the biopolymer structure to form low-molecular-weight compounds, which is found to be a key step during artificial coal formation. The artificial coal synthesized has a high degree of coalification. © 2022 American Chemical Society.

Авторы
Xu Z.-X.1 , Ma X.-Q.1 , Shan Y.-Q.2 , Hu X.3 , Osman S.M.4 , Liao J.-J.5, 6 , Duan P.-G.2 , Luque R. 7, 8
Журнал
ACS Sustainable Chemistry and Engineering
Издательство
American Chemical Society
Номер выпуска
10
Язык
Английский
Страницы
3335-3345
Статус
Опубликовано
Ссылка
Внешняя ссылка
DOI
10.1021/ACSSUSCHEMENG.1C08338
Том
10
Год
2022
Организации
  • 1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China
  • 2 Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'An Jiaotong University, Shaanxi, Xi'an, 710049, China
  • 3 School Materials Science and Engineering, University of Jinan, Jinan, 250022, China
  • 4 Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
  • 5 Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
  • 6 State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
  • 7 Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, Cordoba, E14014, Spain
  • 8 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Str., Moscow, 117198, Russian Federation
Ключевые слова
artificial coal; carbon neutrality; hydrothermal carbonization; mechanism; pressure
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