Issue 16, 2016

Hydrophilic sulfonic acid-functionalized micro-bead silica for dehydration of sorbitol to isosorbide

Abstract

Different (3-mercaptopropyl)trimethoxysilane (MPTS) loadings of sulfonic acid-functionalized micro-bead silica (SA-SiO2) were prepared by silylation and oxidation, and characterized by elemental analysis, SEM, FT-IR, TGA, NH3-TPD, BET N2 adsorption–desorption and 13C NMR CP/MAS. The as-prepared SA-SiO2 showed strong hydrophilic nature and excellent catalytic performance for dehydration of sorbitol to isosorbide. The selectivity to isosorbide is obviously affected by the MPTS loading. Using SA-SiO2 as a solid catalyst with 60.5% MPTS loading, 100% sorbitol conversion and 84% yield of isosorbide are achieved at 120 °C for 10 h under vacuum. The catalyst was reused 10 times without noticeable loss of activity and selectivity.

Graphical abstract: Hydrophilic sulfonic acid-functionalized micro-bead silica for dehydration of sorbitol to isosorbide

Supplementary files

Article information

Article type
Paper
Submitted
23 Dec 2015
Accepted
16 Jan 2016
First published
19 Jan 2016

RSC Adv., 2016,6, 13514-13521

Author version available

Hydrophilic sulfonic acid-functionalized micro-bead silica for dehydration of sorbitol to isosorbide

J. Shi, Y. Shan, Y. Tian, Y. Wan, Y. Zheng and Y. Feng, RSC Adv., 2016, 6, 13514 DOI: 10.1039/C5RA27510E

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