Liquefiable biomass-derived porous carbons and their applications in CO2 capture and conversion. Issue 9 (14th April 2022)

• Record Type: Journal Article
• Authors: He, Jinglin; Jin, Ziheng; Gan, Fengli; Xie, Lingling; Guo, Jundong; Zhang, Shihan; Jia, Charles Q.; Ma, Ding; Dai, Zhongde; Jiang, Xia
• Is Part Of: Green chemistry. Volume 24:Issue 9(2022)
• Page Start: 3376
• Page End: 3415
• Publication Date: 2022-04-14
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d1gc04746a
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Liquefiable biomass-derived porous carbons (LBPCs) have been explored as adsorbents for CO2 capture and catalysts for CO2 conversion, showing great potential in helping achieve "negative carbon emissions". Abstract : Biomass-derived porous carbons (BPCs) have been explored as adsorbents for CO2 capture and catalysts for CO2 conversion, showing great potential in helping achieve "negative carbon emissions". Traditionally, BPCs are derived from solid biomass such as forestry and agriculture residuals. They are limited in performance due to poor morphology control, uneven, low-active sites, and weak mechanical strength. Liquid or liquefiable biomass, such as carbohydrate solution, microalgae, and bio-oil, is an emerging class of porous carbon precursors. In recent years, their fluidity, miscibility and formability have been exploited, resulting in high-performance liquefiable biomass-derived porous carbons (LBPCs) with controllable particle size distribution, evenly distributed active sites and adjustable porosity. About 30% of adsorbents and catalysts are currently prepared from liquefiable biomass via tailorable synthesis; the rapid expansion of research calls for a comprehensive review. This review introduces the concept of liquefiable biomass precursors (LBPs) and summarizes LBPs' specificity. We present a comprehensive account of the multi-scale design and functional synthesis methods, including sol–gel, reverse emulsion, hydrothermal carbonization and spray drying. We illustrate LBPCs' performance in CO2 capture and conversion, emphasizing the approaches to improve the CO2 capture capacity and catalytic conversion efficiency by regulating the properties of LBPCs. The review concludes with a perspective on research and development needs for scaling up LBPC-based negative emission technologies (NET).