化工学报 ›› 2023, Vol. 74 ›› Issue (11): 4559-4569.DOI: 10.11949/0438-1157.20230997

• 催化、动力学与反应器 • 上一篇    下一篇

废海绵衍生碳基固体酸催化热解木薯渣制备左旋葡萄糖酮

钟声亮1,2,3(), 张军2,3, 单锐2,3, 孙勇1()   

  1. 1.东北农业大学工程学院,黑龙江 哈尔滨 150036
    2.中国科学院广州能源研究所,广东 广州 510640
    3.中国科学院可再生能源重点实验室,广东 广州 510640
  • 收稿日期:2023-09-22 修回日期:2023-10-31 出版日期:2023-11-25 发布日期:2024-01-22
  • 通讯作者: 孙勇
  • 作者简介:钟声亮(1998—),男,硕士研究生,zhongsl@ms.giec.ac.cn
  • 基金资助:
    国家自然科学基金面上项目(52276219);广州市基础与应用基础研究基金项目(202201010328)

Waste sponge derived carbon-based solid acids for levoglucosanone production via cassava residue pyrolysis

Shengliang ZHONG1,2,3(), Jun ZHANG2,3, Rui SHAN2,3, Yong SUN1()   

  1. 1.College of Engineering, Northeast Agricultural University, Harbin 150036, Heilongjiang, China
    2.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
    3.CAS Key Laboratory of Renewable Energy, Guangzhou 510640, Guangdong, China
  • Received:2023-09-22 Revised:2023-10-31 Online:2023-11-25 Published:2024-01-22
  • Contact: Yong SUN

摘要:

以废弃海绵作为碳材料前体,通过惰性气氛碳化和接枝磺酸基团,合成了系列磺酸功能化碳基固体酸,用于木薯渣快速热解制备左旋葡萄糖酮(LGO)。研究采用多种物理化学表征手段,如X射线衍射、红外光谱、液氮吸脱附、扫描电镜等,系统分析了制备的废弃海绵衍生碳基固体酸物化特性。结果表明,废弃海绵衍生碳基固体酸具有较丰富的孔道结构,其表面接枝了丰富的磺酸基团,因而有利于木薯渣选择性热解转化获得LGO。其中,在碳化温度500℃、碳/酸比1 g∶0.5 ml时,废弃海绵衍生碳基固体酸展现出较优的催化热解性能,产物中LGO质量收率可达12.93%。本文研究将为废弃海绵资源化利用提供新的思路,同时又能够促进固废衍生碳材料在农林废弃物高值转化方面应用。

关键词: 生物质, 催化剂, 热解, 有机化合物, 化学分析

Abstract:

In this paper, waste sponges were used as carbon material precursors, and a series of sulfonic acid functionalized carbon-based solid acids were synthesized through inert atmosphere carbonization and grafting of sulfonic acid groups, which were used for rapid pyrolysis of cassava residue to prepare LGO. The as-prepared waste sponge derived carbon-based solid acids were systematically analyzed by using various physicochemical characterizations, including X-ray diffraction (XRD), infrared spectroscopy (FT-IR), liquid nitrogen adsorption and desorption, and scanning electron microscopy (SEM), and so on, so as to identify the structural characteristics. The experimental results indicated that waste sponge derived carbon-based solid acid prepared at 500℃ and carbon-to-acid ratio of 1 g∶0.5 ml had rich porous structures and sulfonic acid groups, thus facilitating the selective pyrolysis of cassava residue into LGO. Under the catalysis of above mentioned carbon-based solid acid, the mass yield of LGO achieved 12.93% from cassava residue pyrolysis. This study presents a new idea for the resource utilization of waste sponges, which also promoted the application of solid wastes derived carbon materials for high-value transformation of agricultural and forestry wastes.

Key words: biomass, catalyst, pyrolysis, organic compounds, chemical analysis

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