Preparation of ZTIF based hydrophobic micro-mesoporous carbon and their adsorption and separation performance of 5-hydroxymethylfurfural

被引：0
|
作者：
Lyu T. [1 ]
Yuan M. [1 ]
Wang J. [1 ]
Gao M. [1 ]
Yang J. [1 ]
Xu H. [1 ]
Dong J. [1 ]
Shi Q. [1 ]
机构：
[1] College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Shanxi, Taiyuan
来源：
Huagong Xuebao/CIESC Journal | 2024年 / 75卷 / 04期
关键词：
5-HMF; adsorption; hydrophobic; micro-mesoporous; porous carbon; recovery; separation;
D O I：
10.11949/0438-1157.20231418
中图分类号：
学科分类号：
摘要：
The stock solution of 5-hydroxymethylfurfural (5-HMF) that has undergone acidic catalytic conversion of biomass is composed of a low-concentration aqueous solution and multi-component acidic by-products levulinic acid (LA) and formic acid (FA). Therefore, the design of 5-HMF separation adsorbents requires hydrophobicity, acid resistance, and high selectivity. In this work, porous carbon with acid resistance, hydrophobicity and suitable micro-mesoporous distribution were obtained by controlling carbonization temperature and activation conditions using high N-content zeolitic tetrazolate-imidazolate frameworks (ZTIFs) as precursors, and the π - π interaction between porous carbon and 5-HMF can be used to achieve efficient enrichment and separation of 5-HMF in acid-containing aqueous solution. Three types of ZTIF-8 based porous carbon with different N-content and micro-mesoporous distribution were obtained by controlling carbonization temperature and activating alkali carbon ratio using ZTIF-8 as precursor. The relationship between the N-content and micro-mesoporous distribution of ZTIF-8 based porous carbon and the adsorption and separation performance of 5-HMF has been established. NCZTIF-8700C-800A2, with low N-content and abundant large micropores and small mesopores (12—30 Å), is an adsorbent for efficient enrichment and separation of 5-HMF from aqueous solutions containing acidic by-products. © 2024 Materials China. All rights reserved.
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页码：1642 / 1654
页数：12
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