biostudies-literaturePopova MEuropean Cooperation in Science and TechnologyBulgarian Science FundBulgarian Ministry of Education and Science7694https://www.ebi.ac.uk/biostudies/studies/S-EPMC8708772biostudies-literatureUnknown26(24)Mono-, and bimetallic Ni-, Ru-, and Pt-modified nanosized Beta zeolite catalysts were prepared by the post synthesis method and characterized by powder X-ray diffraction (XRD), nitrogen physisorption, HRTEM microscopy, temperature-programmed reduction (TPR-TGA), ATR FT-IR spectroscopy, and by solid-state MAS-NMR spectroscopy. The presence of nanosized nickel-oxide, ruthenium-oxide, and platinum species was detected on the catalysts. The presence of Brønsted and Lewis acid sites, and incorporation of nickel ions into zeolite lattice was proven by FT-IR of adsorbed pyridine. The structural changes in the catalyst matrix were investigated by solid state NMR spectroscopy. The catalysts were used in a gas-phase hydrodemethoxylation and dealkylation of 2-methoxy-4-propylphenol as a lignin derivative molecule for phenol synthesis.Molecules (Basel, Switzerland)Hydrodemethoxylation/Dealkylation on Bifunctional Nanosized Zeolite Beta.PMC8708772COST Action CA17128DCM # 577/17.08.2018Distributed Research Infrastructure INFRAMATКП-06-КОСТ/3/20182019-2.1.13-TÉT_IN-2020-00043Koseva NSzegedi APopova MMitrev YShestakova PMihalyi MRKarashanova DOykova MLazarova HfalseHydrodemethoxylation/Dealkylation on Bifunctional Nanosized Zeolite Beta.Mono-, and bimetallic Ni-, Ru-, and Pt-modified nanosized Beta zeolite catalysts were prepared by the post synthesis method and characterized by powder X-ray diffraction (XRD), nitrogen physisorption, HRTEM microscopy, temperature-programmed reduction (TPR-TGA), ATR FT-IR spectroscopy, and by solid-state MAS-NMR spectroscopy. The presence of nanosized nickel-oxide, ruthenium-oxide, and platinum species was detected on the catalysts. The presence of Brønsted and Lewis acid sites, and incorporation of nickel ions into zeolite lattice was proven by FT-IR of adsorbed pyridine. The structural changes in the catalyst matrix were investigated by solid state NMR spectroscopy. The catalysts were used in a gas-phase hydrodemethoxylation and dealkylation of 2-methoxy-4-propylphenol as a lignin derivative molecule for phenol synthesis.2021-01-01T00:00:00Z2021 Dec2024-02-15T09:05:33.724Z2022-02-11T14:30:38.226ZS-EPMC87087723494677710.3390/molecules26247694