Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 371-379 |
| Number of pages | 9 |
| Journal | Journal of Catalysis |
| Volume | 375 |
| DOIs | |
| Publication status | Published - 1 Jul 2019 |
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Keywords
- Core-shell structure
- Heterogeneous catalysis
- Knoevenagel condensation
- MOF@MOF
- MOFs
ASJC Scopus subject areas
- Catalysis
- Physical and Theoretical Chemistry
Cite this
Enhancing catalytic performance via structure core-shell metal-organic frameworks. / Gong, Yanyan; Yuan, Ye; Chen, Cheng; Zhang, Pan; Wang, Jichao; Khan, Anish; Zhuiykov, Serge; Chaemchuen, Somboon; Verpoort, Francis.
In: Journal of Catalysis, Vol. 375, 01.07.2019, p. 371-379.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancing catalytic performance via structure core-shell metal-organic frameworks
AU - Gong, Yanyan
AU - Yuan, Ye
AU - Chen, Cheng
AU - Zhang, Pan
AU - Wang, Jichao
AU - Khan, Anish
AU - Zhuiykov, Serge
AU - Chaemchuen, Somboon
AU - Verpoort, Francis
PY - 2019/7/1
Y1 - 2019/7/1
N2 - 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.
AB - 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.
KW - Core-shell structure
KW - Heterogeneous catalysis
KW - Knoevenagel condensation
KW - MOF@MOF
KW - MOFs
UR - http://www.scopus.com/inward/record.url?scp=85068091126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068091126&partnerID=8YFLogxK
U2 - 10.1016/j.jcat.2019.06.031
DO - 10.1016/j.jcat.2019.06.031
M3 - Article
VL - 375
SP - 371
EP - 379
JO - Journal of Catalysis
JF - Journal of Catalysis
SN - 0021-9517
ER -