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Hydrogenation reactions catalyzed by colloidal palladium nanoparticles under flow regime
Author(s) -
Reina Antonio,
Favier Isabelle,
Teuma Emmanuelle,
Gómez Montserrat,
Conte Annelyse,
Pichon Laurent
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16752
Subject(s) - catalysis , nitrobenzene , chemistry , palladium , isomerization , nanoparticle , isophorone , colloid , chemical engineering , hydrogen , organic chemistry , engineering
A glycerol colloidal solution of palladium nanoparticles stabilized by PVP ( PdPVP , mean diameter of 2.2 ± 0.8 × 10 −9 m) was employed under flow conditions for hydrogenation reactions. After optimization, we selected the tube‐in‐tube flow reactor as the more suitable system for this catalytic process due to its ability to regulate the addition of hydrogen. PdPVP nanoparticles were synthesized and fully characterized ((HR)‐TEM, PXRD, EA, and ICP) both in glycerol solution and at solid state. The reduction of different substrates, including nitrobenzene, 4‐phenylbut‐3‐en‐2‐one, and isophorone, was achieved under relatively smooth conditions (5–7 × 10 5 Pa of H 2 ) in short times (<600 s). Unfortunately, the reduction of 1‐dodecene was not possible due to the faster isomerization reaction. The optimal effusion of hydrogen in the colloidal phase together with the catalytic efficiency of this system is noteworthy.