Ionothermal Carbonization of Sugarcane Bagasse in 1-Alkyl-3-methylimidazolium Ionic Liquids: Insights into the Role of the Chloroferrate Anion

被引：4

作者：

Aldroubi, Soha ^{[1
]}

Geneste, Amine ^{[1
]}

Guiffrey, Pascale ^{[1
]}

El-Sakhawy, Mohamed ^{[2
]}

Kamel, Samir ^{[2
]}

Bou Malham, Ibrahim ^{[3
]}

Hesemann, Peter ^{[1
]}

Mehdi, Ahmad ^{[1
]}

Brun, Nicolas ^{[1
]}

机构：

[1] Univ Montpellier, ICGM, CNRS, ENSCM, F-34293 Montpellier, France

[2] Natl Res Ctr, Cellulose & Paper Dept, Giza 12622, Egypt

[3] Univ Libanaise, EREN, Fac Sci 4, Zahle 1801, Lebanon

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2024年 / 128卷 / 14期

关键词：

CARBON MATERIALS; HYDROTHERMAL CARBONIZATION; ACTIVATED CARBON; POROUS CARBONS; ADSORPTION; BIOMASS; DIOXIDE; CHEMISTRY; MIXTURES; NITROGEN;

D O I：

10.1021/acs.jpcb.3c08457

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the ionothermal carbonization (ITC) of lignocellulosic biomass in imidazolium tetrachloroferrate ionic liquids (ILs) as an advantageous approach for the preparation of nanostructured carbonaceous materials, namely, ionochars. In a previous study, we investigated the role of the imidazolium cation and demonstrated the possibility of controlling both the textural and morphological properties of ionochars by cation engineering. Although essential for providing intermediate Lewis acidity and relatively high thermal stability, the role of the chloroferrate anion is still open to debate. Herein, we investigated the ITC of sugarcane bagasse and its main component, cellulose, in 1-alkyl-3-methylimidazolium ILs with different chloroferrate anions. We identified anionic speciation and its impact on the properties of the IL by Raman spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The obtained ionochars were characterized by gas physisorption, electron microscopy, Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and C-13 solid-state CP-MAS NMR spectroscopy. We show that the anionic species have a predominant impact on the textural and morphological properties of the ionochars.

引用

页码：3485 / 3498

页数：14

共 55 条

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