Enhancing catalytic performance via structure core-shell metal-organic frameworks

Enhancing catalytic performance via structure core-shell metal-organic frameworks

Detalles Bibliográficos
Parent link:Journal of Catalysis
Vol. 375.— 2019.— [P. 371-379]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий (ИШХБМТ)
Otros Autores: Gong Yanyan, Yuan Ye, Chen Cheng, Zhang Pan, Wang Jichao, Khan Anish, Zhuiykov S. Serge, Chaemchuen S. Somboon, Verpoort F. V. K. Frensis Valter Kornelius
Sumario:Title screen
A core-shell structure metal-organic framework based on the Zr clusters bridging with BDC linkers (UiO-66) as a core-structure and BPYDC linkers (UiO-67-BPY) as a shell-structure was developed (UiO-67-BPY@UiO-66). The combination of several techniques such as XRD, FTIR, SEM, TEM, and surface area analysis etc. were applied for the characterization and confirmed a core-shell structure of UiO-67-BPY@UiO-66. Taking advantage of the high porous stability of the core-structure (UiO-66) and the presence of active Lewis basic sites from the bipyridinic linker in the shell layer (UiO-67-BPY) could be advantageous for basic-catalyzed reactions. The synthesized core-shell material was applied as a heterogeneous catalyst for the Knoevenagel condensation as a model reaction. An excellent catalytic performance was obtained by the core-shell material over traditional MOFs and other previous reports based on MOFs. The excellent dispersion of the active sites (Lewis basic) in the outer layer of the designed core-shell structure was a breakthrough to prevent mass diffusion limitation during catalysis. Additionally, the catalyst can be recycled and maintained its high catalytic performance at least for four cycles.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2019
Materias:
электронный ресурс
труды учёных ТПУ
MOF@MOF
core-shell structure
heterogeneous catalysis
knoevenagel condensation
MOFs
гетерогенный катализ
карбоксилирование
Acceso en línea:https://doi.org/10.1016/j.jcat.2019.06.031
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663744

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