气候变化领域集成服务门户(CCPortal): Cellulose-Amine Porous Materials: The Effect of Activation Method on Structure, Textural Properties, CO2 Capture, and Recyclability

CCPortal

DOI	10.3390/molecules29051158
	Cellulose-Amine Porous Materials: The Effect of Activation Method on Structure, Textural Properties, CO2 Capture, and Recyclability
	Krupsova, Sarah; Almasi, Miroslav
发表日期	2024
EISSN	1420-3049
起始页码	29
结束页码	5
卷号	29 期号:5
英文摘要	CO2 capture via physical adsorption on activated porous carbons represents a promising solution towards effective carbon emission mitigation. Additionally, production costs can be further decreased by utilising biomass as the main precursor and applying energy-efficient activation. In this work, we developed novel cellulose-based activated carbons modified with amines (diethylenetriamine (DETA), 1,2-bis(3-aminopropylamino)ethane (BAPE), and melamine (MELA)) with different numbers of nitrogen atoms as in situ N-doping precursors. We investigated the effect of hydrothermal and thermal activation on the development of their physicochemical properties, which significantly influence the resulting CO2 adsorption capacity. This process entailed an initial hydrothermal activation of biomass precursor and amines at 240 degrees C, resulting in C+DETA, C+BAPE and C+MELA materials. Thermal samples (C+DETA (P), C+BAPE (P), and C+MELA (P)) were synthesised from hydrothermal materials by subsequent KOH chemical activation and pyrolysis in an inert argon atmosphere. Their chemical and structural properties were characterised using elemental analysis (CHN), infrared spectroscopy (IR), scanning electron microscopy (SEM), and thermogravimetric analysis (TG). The calculated specific surface areas (S-BET) for thermal products showed higher values (998 m(2) g(-1) for C+DETA (P), 1076 m(2) g(-1) for C+BAPE (P), and 1348 m(2) g(-1) for C+MELA (P)) compared to the hydrothermal products (769 m(2) g(-1) for C+DETA, 833 m(2) g(-1) for C+BAPE, and 1079 m(2) g(-1) for C+MELA). Carbon dioxide adsorption as measured by volumetric and gravimetric methods at 0 and 25 degrees C, respectively, showed the opposite trend, which can be attributed to the reduced content of primary adsorption sites in the form of amine groups in thermal products. N-2 and CO2 adsorption measurements were carried out on hydrothermal (C) and pyrolysed cellulose (C (P)), which showed a several-fold reduction in adsorption properties compared to amine-modified materials. The recyclability of C+MELA, which showed the highest CO2 adsorption capacity (7.34 mmol g(-1)), was studied using argon purging and thermal regeneration over five adsorption/desorption cycles.
英文关键词	cellulose; amines; hydrothermal synthesis; pyrolysis; carbon dioxide storage
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
WOS类目	Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS记录号	WOS:001183390800001
来源期刊	MOLECULES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305677
作者单位	University of Pavol Jozef Safarik Kosice
推荐引用方式 GB/T 7714	Krupsova, Sarah,Almasi, Miroslav. Cellulose-Amine Porous Materials: The Effect of Activation Method on Structure, Textural Properties, CO2 Capture, and Recyclability[J],2024,29(5).
APA	Krupsova, Sarah,&Almasi, Miroslav.(2024).Cellulose-Amine Porous Materials: The Effect of Activation Method on Structure, Textural Properties, CO2 Capture, and Recyclability.MOLECULES,29(5).
MLA	Krupsova, Sarah,et al."Cellulose-Amine Porous Materials: The Effect of Activation Method on Structure, Textural Properties, CO2 Capture, and Recyclability".MOLECULES 29.5(2024).