Journal
JOURNAL OF CATALYSIS
Volume 392, Issue -, Pages 141-149Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2020.09.037
Keywords
Core-shell structure; MOF@MOF; Metallation; Palladium catalyst; Olefin hydrogenation
Categories
Funding
- State Key Lab of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology)
- National Natural Science Foundation of China [21850410449, 2191101511]
- Tomsk Polytechnic University Competitiveness Enhancement Program [VIU-69/2019]
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Facile strategies for noble metal dispersion in the shell-layer of core-shell structured metal-organic frameworks based on Zr-MOFs (UiO-66@Pd-UiO-67-BPY) was developed. The robust structure of the core-structure UiO-66 was firstly synthesized before covering up with a shell-structure of UiO-67-BPY obtaining the core-shell structure (UiO-66@UiO-67-BPY). The metallation with active palladium species (Pd-II) was designed on the shell-layer of core-shell MOFs via a post-synthetic method. The Pd species were coordinated explicitly in a bidentate manner to the bipyridyl linkers of the shell-structure (UiO-67-BPY). Excellent dispersion of Pd in the shell structure was obtained, resulting in UiO-66@Pd-UiO-67-BPY, as confirmed from characterizations. Taking advantage of the designed catalyst, the synthesized UiO-66@Pd-UiO-67-BPY was examined for the catalytic hydrogenation reaction. The results revealed an excellent catalytic performance of UiO-66@Pd-UiO-67-BPY compared with the traditional catalyst Pd-UiO-67-BPY. Moreover, the designed catalyst structure exhibited outstanding performance and paved the way towards a cost-effective catalyst synthesis based on MOFs combined with a noble metal. (C) 2020 Elsevier Inc. All rights reserved.
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