Abstract
A single-stage gas-phase synthesis of isoprene from formaldehyde and isobutylene in the presence of Al–BEA and Nb–BEA zeolite catalysts containing different amounts of aluminum and niobium has been studied. The physicochemical properties of the catalysts have been studied by low-temperature nitrogen adsorption, infrared spectroscopy of adsorbed CO, X-ray fluorescence analysis, and ammonia TPD methods. Catalytic tests have shown that, at similar formaldehyde conversion values, the isoprene selectivity is higher in the presence of the Al-containing BEA catalysts. It has been found that Al–BEA with Si/Al = 12 exhibits the highest activity in isoprene synthesis.
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Funding
This work was supported by the Russian Foundation for Basic Research, project no. 20-03-00587-a.
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Translated by M. Timoshinina
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Ponomareva, O.A., Chistov, D.L., Kots, P.A. et al. Isoprene Synthesis from Formaldehyde and Isobutylene in the Presence of Aluminum- and Niobium-Containing BEA Catalysts. Pet. Chem. 60, 942–949 (2020). https://doi.org/10.1134/S0965544120080125
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DOI: https://doi.org/10.1134/S0965544120080125