The effect of the nanoscale intimacy of platinum and acid centres on the hydroisomerization of short-chain alkanes

0554334 - ÚFCH JH 2023 RIV NL eng J - Článek v odborném periodiku
Morávková, Jaroslava - Pilař, Radim - Bortnovsky, O. - Kaucký, Dalibor - Vondrová, Alena - Rathouský, Jiří - Sádovská, Galina - Sazama, Petr
The effect of the nanoscale intimacy of platinum and acid centres on the hydroisomerization of short-chain alkanes.
Applied Catalysis A - General. Roč. 634, MAR 2022 (2022), č. článku 118535. ISSN 0926-860X. E-ISSN 1873-3875
Grant CEP: GA ČR GA18-20303S; GA MŠMT(CZ) LM2018124; GA MŠMT(CZ) EF16_013/0001821; GA MŠMT(CZ) EF18_046/0015586
Grant ostatní: GA MŠk(CZ) CZ.02.1.01/0.0/0.0/16_013/0001821; ERDF(CZ) CZ.02.1.01/0.0/0.0/18_046/0015586
Institucionální podpora: RVO:61388955
Klíčová slova: hydroisomerization * hydrocracking * beta zeolite (*BEA)
Obor OECD: Physical chemistry
Impakt faktor: 5.5, rok: 2022
Způsob publikování: Omezený přístup

This study analyses the effect of the nanoscale intimacy of Pt metal and Brønsted acid sites on the hydroisomerization of n-pentane and n-hexane using a series of zeolite/binder composite catalysts with Pt located outside or inside of the zeolite crystal and with Pt dispersed in the zeolite crystal and its vicinity on the binder. Analysis of the conversions of n-pentane and n-hexane to branched isomers and Cn≤4 byproducts under the relevant conditions of the process showed that the highest activity is obtained for catalysts with high proximity of acid and Pt sites dispersed in the zeolite crystal together with Pt on the binder surrounding the zeolite crystals. Such an arrangement allows the hydrogenation/dehydrogenation of alkanes in close proximity to the Brønsted sites, allowing the full functionality of acid sites and limiting the diffusion of intermediate alkenes between Pt sites.
Trvalý link: http://hdl.handle.net/11104/0328962