Hydrodemethoxylation/Dealkylation on Bifunctional Nanosized Zeolite Beta.
Margarita PopovaÁgnes SzegediManuela OykovaHristina LazarovaNeli KosevaMagdolna R MihályiDaniela B KarashanovaYavor MitrevPavletta ShestakovaPublished in: Molecules (Basel, Switzerland) (2021)
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.
Keyphrases
- solid state
- metal organic framework
- highly efficient
- high resolution
- single molecule
- quantum dots
- ionic liquid
- water soluble
- high throughput
- reduced graphene oxide
- computed tomography
- atomic force microscopy
- optical coherence tomography
- magnetic resonance imaging
- dna damage response
- crystal structure
- oxidative stress
- energy transfer