نوع مقاله : پژوهشی
نویسندگان
گروه تبدیل گاز، پژوهشکده پتروشیمی، پژوهشگاه پلیمر و پتروشیمی ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Hypothesis: In order to achieve an efficient protocol for the synthesis of 5-hydroxymethylfurfural (HMF) through the modification of different catalytic systems and the design of a heterogeneous catalyst with likely acidic properties for the conversion of fructose to HMF, the heterogenization of homogeneous acidic polymers by natural compounds as a support for catalyst will be of great importance. The use of low-cost, available, bio-compatible and thermally stable supports for the design of heterogeneous catalysts will be desirable from an economic and environmental point of view. Because heterogeneous catalysts have advantages such as high reusability. easy product/catalyst separation and low cost.
Methods: In order to design an efficient and economical acidic heterogeneous catalyst for fructose dehydration and HMF production, boehmite was considered as support for an acidic polymer composition. The acidity of boehmite was improved by covalently linking an acidic polymer. More precisely, boehmite was first functionalized with vinyl group and then polymerized with acrylic acid (AA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) monomers.
Findings: Boehmite-acidic polymer composite as a heterogeneous catalyst, was studied and identified by various methods such as XRD, SEM, TGA, etc. Investigating the efficiency of the prepared catalyst for the production of HMF and optimizing the reaction variables showed that catalyst loading of 20 wt% at a temperature of 85°C and after 60 minutes, leads to the production of 5-hydroxymethylfurfural with an efficiency of 88%. Notably, the prepared catalyst showed high recyclability and after six consecutive reaction cycles, a slight change in HMF production efficiency was observed. Comparing the performance of the catalyst with the counterpart without boehmite confirmed the role of boehmite in improving the catalytic activity and recyclability.
کلیدواژهها [English]
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