Efficient conversion of fructose to 5-hydroxymethylfurfural by hydrophobic modified SAPO-34 molecular sieve

被引：0

作者：

Sun, Aojie ^{[1
]}

Ying, Yu ^{[1
]}

Wang, Meng ^{[2
]}

Zhu, Lin ^{[1
]}

Wang, Yidi ^{[2
]}

Zhang, Quan ^{[2
]}

Li, Lanpeng ^{[2
]}

Cao, Changhai ^{[2
]}

Xu, Haoxiang ^{[1
]}

Cheng, Daojian ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing Key Lab Energy Environm Catalysis, Beijing 100029, Peoples R China

[2] SINOPEC Dalian Res Inst Petr & Petrochem Co Ltd, Key Lab Biofuels & Biochem Engn, Dalian 116045, Peoples R China

来源：

JOURNAL OF CATALYSIS | 2025年 / 446卷

关键词：

Fructose dehydration; 5-Hydroxymethylfurfural; SAPO-34; Hydrophobic groups; Alkyl chain length; LEVULINIC ACID; SOLID ACID; HETEROGENEOUS CATALYSTS; SELECTIVE CONVERSION; WATER-TOLERANT; DEHYDRATION; ZEOLITE; GLUCOSE; BIOMASS; 5-HMF;

D O I：

10.1016/j.jcat.2025.116059

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：

To address the issue of the accumulation of water around Br & oslash;nsted acid sites during the fructose dehydration towards 5-hydroxymethylfurfural (HMF), in this work, hydrophobic SAPO-34 is prepared by post-treatment silanization by grafting alkyl hydrophobic groups on its surface. The SAPO-34 catalyst modified with dodecyl trimethoxysilane exhibits a significantly enhanced yield of 5-hydroxymethylfurfural (HMF), reaching 95.05 %. It is determined that long-chain hydrophobic groups facilitate the forward reaction of fructose dehydration by creating a microenvironment favorable for water removal and fructose enrichment. Furthermore, it releases Br & oslash;nsted acid sites from water molecules, and enhance fructose's accessibility to Br & oslash;nsted acid sites. Thus, the activity, selectivity and durability of SAPO-34 can be promoted simultaneously, due to the selective removal water rather than fructose. This work put insight into the role of alkyl chain length of hydrophobic groups in promoting fructose dehydration towards HMF, which may be guideline for other dehydration reactions restricted by water.

引用

页数：12

共 65 条

[31] Mo-based bio-derived carbon catalyst enables a tandem dehydration reaction for the direct synthesis of fuel precursors from fructose [J].