Dealuminated H13 zeolite for selective conversion of fructose to furfural and formic acid

作者：Li, Rui; Lin, Qixuan; Ren, Junli^*; Yang, Xiaobao; Wang, Yingxiong; Kong, Lingzhao^*

来源：Green Energy & Environment, 2024, 9(2): 311-320.

DOI：10.1016/j.gee.2022.06.003

• Fructose
• Dealuminated-H 13 zeolite
• Selective conversion
• Furfural

The fructose-to-furfural transformation is facing major challenges in the selectivity and high efficiency. Herein, we have developed a simple and effective approach for the selective conversion of fructose to furfural using H13 zeolite modified by organic acids for dealuminization to regulate its textural and acidic properties. It was found that citric acid-dealuminized H13 zeolite possessed high specific surface areas, wide channels and high Bronsted acid amount, which facilitated the selective conversion of fructose to furfural with a maximum yield of 76.2% at 433 K for 1 h in the y-butyrolactone (GBL)-H2O system, as well as the concomitant formation of 83.0% formic acid. The 13C-isotope labelling experiments and the mechanism revealed that the selective cleavage of C1-C2 or C5-C6 bond on fructose was firstly occurred to form pentose or C5 intermediate by weak Bronsted acid, which was then dehydrated to furfural by strong Bronsted acid. Also this dealuminized H13 catalyst showed the great recycling performance and was active for the conversion of glucose and mannose. (c) 2022 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

• 单位
  中国科学院