Počet záznamů: 1  

Catalytic Properties of 3D Graphene-Like Microporous Carbons Synthesized in a Zeolite Template

  1. 1. 0487734 - UFCH-W 2019 RIV US eng J - Článek v odborném periodiku
    Sazama, Petr - Pastvová, Jana - Rizescu, C. - Tirsoaga, A. - Parvulescu, V. I. - Garcia, H. - Kobera, Libor - Seidel, J. - Rathouský, Jiří - Klein, Petr - Jirka, Ivan - Morávková, Jaroslava - Blechta, Václav
    Catalytic Properties of 3D Graphene-Like Microporous Carbons Synthesized in a Zeolite Template.
    ACS Catalysis. Roč. 8, č. 3 (2018), s. 1779-1789 ISSN 2155-5435
    Grant CEP: GA ČR GA15-12113S; GA MŠk(CZ) LM2015073
    Grant ostatní:GA MŠk(CZ) CZ.02.1.01/0.0/0.0/16_013/0001821
    Institucionální podpora: RVO:61388955 ; RVO:61389013
    Klíčová slova: catalytic hydrogenation * zeolite-templated carbon * 3D graphene-like microporous carbons
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Obor OECD: Physical chemistry
    Impakt faktor: 11.384, rok: 2017

    The inherent properties of a single atomic carbon layer in graphene offer opportunities for the creation of catalytically active centers tailored on a molecular level on a support with high thermal stability and very high specific surface area. We demonstrate that organization of the two-dimensional system of the carbon layer into three-dimensional (3D) graphene-like catalytic materials with the connectivity of a pore network providing good accessibility to the active centers allows the preparation of catalytic materials that exploit the properties of graphene. In this study, 3D graphene-like microporous carbons, denoted as β-carbon and Y-carbon, were synthesized by nanocasting of beta (*BEA) and faujasite (FAU) zeolite templates. Structural analyses show that the materials are characterized by 3D-assembled and highly stable single-atom graphene layers that form an open porous system resembling the regular channel system of the zeolites with a specific surface area comparable to the surface area of graphene. The materials effectively catalyze the hydrogenation of alkenes, alkynes, and cycloalkenes into the corresponding alkanes and cycloalkanes. The materials facilitate catalytic intramolecular rearrangements, including the selective isomerization of double bonds and branching of linear chains, as well as stereoselective isomerization of unsaturated hydrocarbons.
    Trvalý link: http://hdl.handle.net/11104/0282367