The catalytic effect of Al-KIT-5 and KIT-5-SO3H on the conversion of fructose to 5-hydroxymethylfurfural
| Autor: | Ali Shahvar, Nikzad Andisheh, Mohammad Saraji, Alireza Najafi Chermahini, Hamid Hafizi |
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| Rok vydání: | 2017 |
| Předmět: |
010405 organic chemistry
Fructose General Chemistry 010402 general chemistry medicine.disease 01 natural sciences 0104 chemical sciences Catalysis Solvent chemistry.chemical_compound chemistry Elemental analysis 5-hydroxymethylfurfural medicine Organic chemistry Dehydration Brønsted–Lowry acid–base theory Hydroxymethylfurfural |
| Zdroj: | Research on Chemical Intermediates. 43:5507-5521 |
| ISSN: | 1568-5675 0922-6168 |
| Popis: | The aim of this work is to study the production of hydroxymethylfurfural (HMF) from fructose using heterogenous catalysts based on KIT-5. For this propose, Al-KIT-5 and KIT-5-SO3H as the Lewis and Bronsted catalysts were prepared and were characterized using different techniques such as FT-IR, SEM, EDS, TEM, BET, TGA and elemental analysis. With the use of Al-KIT-5 as the catalyst, the appropriate reaction temperature and time were 135 °C and 60 min, respectively. Moreover, with the use of KIT-5-SO3H as the catalyst, the proper reaction conditions were found to be 125 °C and 45 min, respectively. In addition, the corresponding amounts of catalyst weight were 40 and 50 mg for KIT-5-SO3H and Al-KIT-5, respectively. Under these conditions, the conversion of fructose was 93.9 and 88.3%, respectively. These results indicated that, due to its Bronsted acid nature, the KIT-5-SO3H catalyst showed better results when 40 mg catalyst was used at 125 °C for 45 min in DMSO as the solvent. Both catalysts could be recycled and reused several times. |
| Databáze: | OpenAIRE |
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