Bio-dee synthesis and dehydrogenation coupling of bio-ethanol to bio-butanol over multicomponent mixed metal oxide catalysts
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Data
2021-05-22Autor
Pieta, Izabela S.
Michalik, Alicja
Kraleva, Elka
Mrdenovic, Dusan
Sek, Alicja
Wahaczyk, Ewa
Lewalska-Graczyk, Agnieszka
Krysa, Mikolaj
Sroka-Bartnicka, Anna
Pieta, Piotr
Nowakowski, Robert
Lew, Agata
Serwicka, Ewa M.
Metadane
Pokaż pełny rekordStreszczenie
Within the Waste2Fuel project, innovative, high-performance, and cost-effective fuel production methods from municipal solid wastes (MSWs) are sought for application as energy carriers or direct drop-in fuels/chemicals in the near-future low-carbon power generation systems and in-ternal combustion engines. Among the studied energy vectors, C1-C2 alcohols and ethers are mainly addressed. This study presents a potential bio-derived ethanol oxidative coupling in the gas phase in multicomponent systems derived from hydrotalcite-containing precursors. The reaction of alcohol coupling to ethers has great importance due to their uses in different fields. The samples have been synthesized by the co-precipitation method via layered double hydroxide (LDH) material syn-thesis, with a controlled pH, where the M(II)/M(III) ≈ 0.35. The chemical composition and topology of the sample surface play essential roles in catalyst activity and product distribution. The multiple redox couples Ni2+/Ni3+, Cr2+/Cr3+, Mn2+/Mn3+, and the oxygen-vacant sites were considered as the main active sites. The introduction of Cr (Cr3+/Cr4+) and Mn (Mn3+/Mn4+ ) into the crystal lattice could enhance the number of oxygen vacancies and affect the acid/base properties of derived mixed ox-ides, which are considered as crucial parameters for process selectivity towards bio-DEE and bio-butanol, preventing long CH chain formation and coke deposition at the same time.