期刊
MOLECULES
卷 26, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/molecules26092519
关键词
mesoporous porphyrin polymer; solid acid catalyst; fructose conversion; microwave synthesis in water; 5-hydroxymethyl furfural (HMF)
资金
- DST/SERB [CRG/2019/005613]
- Petrotech Society of India
The study successfully synthesized a solid acid catalyst PorPOPS for efficient conversion of fructose to HMF with high activity and selectivity. Organic modification on silica surfaces is essential to tailor the performance of catalysts, showing promise for future environmentally friendly biomass conversion research.
Solid acid catalysts occupy a special class in heterogeneous catalysis for their efficiency in eco-friendly conversion of biomass into demanding chemicals. We synthesized porphyrin containing porous organic polymers (PorPOPs) using colloidal silica as a support. Post-modification with chlorosulfonic acid enabled sulfonic acid functionalization, and the resulting material (PorPOPS) showed excellent activity and durability for the conversion of fructose to 5-hydroxymethyl furfural (HMF) in green solvent water. PorPOPS composite was characterized by N-2 sorption, FTIR, TGA, CHNS, FESEM, TEM and XPS techniques, justifying the successful synthesis of organic networks and the grafting of sulfonic acid sites (5 wt%). Furthermore, a high surface area (260 m(2)/g) and the presence of distinct mesopores of similar to 15 nm were distinctly different from the porphyrin containing sulfonated porous organic polymer (FePOP-1S). Surprisingly the hybrid PorPOPS showed an excellent yield of HMF (85%) and high selectivity (>90%) in water as compared to microporous pristine-FePOP-1S (yield of HMF = 35%). This research demonstrates the requirement of organic modification on silica surfaces to tailor the activity and selectivity of the catalysts. We foresee that this research may inspire further applications of biomass conversion in water in future environmental research.
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