Selective Production of Phenol on Bifunctional,Hierarchical ZSM-5 Zeolites |
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| Authors: | Margarita Popova gnes Szegedi Manuela Oykova Hristina Lazarova Neli Koseva Magdolna R Mihlyi Pavletta Shestakova |
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| Institution: | 1.Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.O.); (H.L.); (P.S.);2.Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok krt.2., 1117 Budapest, Hungary;3.Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; |
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| Abstract: | Mono- and bimetallic Ni-, Ru- and Pt-modified hierarchical ZSM-5 materials were prepared by impregnation technique and characterized by X-ray diffraction (XRD), N2 physisorption, temperature-programmed reduction (TPR–TGA), ATR–FTIR and solid state NMR spectroscopy. Formation of finely dispersed nickel, ruthenium and platinum species was observed on the bimetallic catalysts. It was found that the peculiarity of the used zeolite structure and the modification procedure determine the type of formed metal oxides and their dispersion and reducibility. The samples’ acidity was studied via FTIR spectroscopy of adsorbed pyridine. The changes in the zeolite structure were studied via solid-state NMR spectroscopy. The catalysts were investigated in a gas-phase hydrodeoxygenation, transalkylation and dealkylation reaction of model lignin derivative molecules for phenol production. |
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| Keywords: | hierarchical ZSM-5 zeolite bifunctional catalysts phenol production gas phase reaction |
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