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Preparation of MOF Confined Ag Nanoparticles for the Highly Active, Size Selective Hydrogenation of Olefins
Author(s) -
Chen WenJing,
Cheng BinHai,
Sun QingTing,
Jiang Hong
Publication year - 2018
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201800744
Subject(s) - selectivity , catalysis , styrene , chemistry , cyclohexene , nanoparticle , solvent , alkene , heterogeneous catalysis , chemical engineering , photochemistry , organic chemistry , copolymer , materials science , nanotechnology , polymer , engineering
Catalysts with both high activity and good selectivity for hydrogenation of olefins to alkanes are of interest. Herein, MOF confined ultrafine Ag NPs (Ag@HKUST‐1) were synthesized by double‐solvent approach using HKUST‐1 as the template and support. HKUST‐1 with narrow cage size distribution (0.5 to 0.9 nm) confined the growth of Ag NPs, while the uniform pores prohibited the entrance of olefins with the molecular size lager than 5.0 Å, which endow the Ag@HKUST‐1 with high catalytic activity and size selectivity for hydrogenation reaction. The hydrogenation of eight kinds of olefins with different molecular size (1‐hexene, cyclohexene, 1‐octene, cyclooctene, styrene, 1‐decene, 1, 1‐diphenylethylene, and 1‐dodecene) catalyzed by Ag@HKUST‐1 confirmed this hypothesis. The olefins with molecular smaller than 5.0 Å were efficiently converted to the corresponding alkanes, whereas those greater than 5.0 Å exhibited extremely low conversation. The catalyst also exhibited high recycle stability in the hydrogenation of styrene.