Several research studies related to biorefining have focused on developing routes for biomass conversion
into biomaterials or platform molecules. In this work, the zeolitic imidazolate frameworks (ZIFs) ZIF-8
and ZIF-67 have been tested as catalysts in the conversion of sugars (sucrose, glucose and fructose) into
methyl lactate. ZIF-8 and ZIF-67 have the same sodalite type zeolite structure but behaved differently in
the sugar conversion in methanol due to the respective presence of Zn and Co in their structures. ZIF-8
has been found to be the most active for the conversion of sugars into methyl lactate (yield 42%) and
was reused in four catalytic cycles. The chemical and physical effects caused by these cycles on the catalysts
have been studied by several techniques (X-ray diffraction, thermogravimetric analyses, infrared
spectroscopy, X-ray photoelectron spectroscopy, scanning electronic microscopy and nitrogen
adsorption).
Several research studies related to biorefining have focused on developing routes for biomass conversioninto biomaterials or platform molecules. In this work, the zeolitic imidazolate frameworks (ZIFs) ZIF-8and ZIF-67 have been tested as catalysts in the conversion of sugars (sucrose, glucose and fructose) intomethyl lactate. ZIF-8 and ZIF-67 have the same sodalite type zeolite structure but behaved differently inthe sugar conversion in methanol due to the respective presence of Zn and Co in their structures. ZIF-8has been found to be the most active for the conversion of sugars into methyl lactate (yield 42%) andwas reused in four catalytic cycles. The chemical and physical effects caused by these cycles on the catalystshave been studied by several techniques (X-ray diffraction, thermogravimetric analyses, infraredspectroscopy, X-ray photoelectron spectroscopy, scanning electronic microscopy and nitrogenadsorption).
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