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PdH x Entrapped in a Covalent Triazine Framework Modulates Selectivity in Glycerol Oxidation
Author(s) -
ChanThaw Carine E.,
Villa Alberto,
Wang Di,
Santo Vladimiro Dal,
Orbelli Biroli Alessio,
Veith Gabriel M.,
Thomas Arne,
Prati Laura
Publication year - 2015
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.201500055
Subject(s) - catalysis , covalent bond , chemistry , nanoparticle , triazine , selectivity , glycerol , chemical engineering , photochemistry , inorganic chemistry , organic chemistry , nanotechnology , materials science , engineering
Pd nanoparticles within a nitrogen‐containing covalent triazine framework (CTF) material are investigated to understand if the highly tunable CTF chemistry mediates the catalytic properties of the Pd nanoparticles. Surprisingly, our results demonstrate that the CTF stabilizes the formation of 2.6 nm PdH x particles within the pores. These confined PdH x particles are very active for the liquid‐phase oxidation of glycerol and promote CC cleavage, probably connected with the enhanced in situ formation of H 2 O 2 . During recycling tests, the confined particles are transformed progressively to very stable Pd 0 particles. This stability has been attributed mainly to a confinement effect as nanoparticles trapped outside the pores lose activity rapidly. These results indicate that there is a potential to tune CTF chemistry to modify the chemistry of the catalytic metals significantly.