Sequential H3PO4–CO2 assisted synthesis of lignin-derived porous carbon: CO2 activation kinetics investigation and textural properties regulation

Liangcai Wang, Linen Xie, Jielong Wu, Xiang Li, Huanhuan Ma and Jianbin Zhou

Renewable Energy, 2022, vol. 191, issue C, 639-648

Abstract: Finding a novel approach for controlling the textural properties of porous carbon and further understanding its activation process have long been highly desirable. Here, sequential H3PO4–CO2 activation and thermogravimetric analysis (TGA) were used to fabricate lignin-derived porous carbons with controllable textural properties and deeply understand the activation process of CO2, respectively. In view of performance and cost, the H3PO4 activation temperature of lignin was 590 °C (the as-obtained porous carbon was named PC-P). CO2 activation temperatures above 800 °C were preferable for PC-P, where the activation process was a chemical reaction control process. Besides, the reactivity index was linearly positively related to the specific surface area. Compared with PC-P, the specific surface area, total pore volume (Vt), micropore volume (Vmicro), mesopore volume (Vmeso), and macropore volume (Vmacro) of PC-PT (the as-synthesized porous carbon derived from PC-P at T °C in a CO2 atmosphere was named PC-PT) were all significantly increased. In other words, the approach of sequential H3PO4–CO2 activation target regulates textural properties was feasible.

Keywords: Lignin; Sequential activation; Porous carbon; Kinetics; Textural properties (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148122004979
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:191:y:2022:i:c:p:639-648

DOI: 10.1016/j.renene.2022.04.036

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().