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在1-乙基-3-甲基咪唑鎓氯化物中使用磺化无定形碳将纤维素转化为有价值的化学品。

Conversion of cellulose into valuable chemicals using sulfonated amorphous carbon in 1-ethyl-3-methylimidazolium chloride.

作者信息

Nguyen Thien-Hang Thi, Phan Ha Bich, Nguyen Trinh Hao, Tran Kim Nguyen, Nguyen Linh Ho Thuy, Doan Tan Le Hoang, Tran Phuong Hoang

机构信息

Department of Organic Chemistry, Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City Vietnam

Vietnam National University Ho Chi Minh City Vietnam.

出版信息

RSC Adv. 2023 Mar 6;13(11):7257-7266. doi: 10.1039/d3ra00177f. eCollection 2023 Mar 1.

DOI:10.1039/d3ra00177f
PMID:36891489
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9986804/
Abstract

In this study, three carbon-based solid acid catalysts were prepared the one-step hydrothermal procedure using glucose and Brønsted acid, including sulfuric acid, -toluenesulfonic acid, or hydrochloric acid. The as-synthesized catalysts were tested for their ability to convert cellulose into valuable chemicals. The effects of Brønsted acidic catalyst, catalyst loading, solvent, temperature, time, and reactor on the reaction were investigated. The as-synthesized C-HSO catalyst containing Brønsted acid sites (-SOH, -OH, and -COOH functional groups) demonstrated high activity in the transformation of cellulose into valuable chemicals with the yield of total products of 88.17% including 49.79% LA in 1-ethyl-3-methylimidazolium chloride ([EMIM]Cl) solvent at 120 °C in 24 h. The recyclability and stability of C-HSO were also observed. A proposed mechanism of cellulose conversion into valuable chemicals in the presence of C-HSO was presented. The current method could provide a feasible approach for the conversion of cellulose into valuable chemicals.

摘要

在本研究中，采用一步水热法，以葡萄糖和布朗斯特酸（包括硫酸、对甲苯磺酸或盐酸）制备了三种碳基固体酸催化剂。对合成的催化剂进行了将纤维素转化为有价值化学品的能力测试。研究了布朗斯特酸性催化剂、催化剂负载量、溶剂、温度、时间和反应器对反应的影响。合成的含有布朗斯特酸位点（-SOH、-OH和-COOH官能团）的C-HSO催化剂在将纤维素转化为有价值化学品方面表现出高活性，在1-乙基-3-甲基咪唑鎓氯化物（[EMIM]Cl）溶剂中于120℃反应24小时，总产物收率为88.17%，其中乳酸（LA）收率为49.79%。还观察到了C-HSO的可回收性和稳定性。提出了在C-HSO存在下纤维素转化为有价值化学品的机理。该方法可为纤维素转化为有价值化学品提供一种可行的途径。

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