(63m) Copper-Phyllosilicate Core-Shell Nanocatalysts with Balanced Active Sites for Carbon-Oxygen Hydrogenolysis Reactions
- Conference: AIChE Spring Meeting and Global Congress on Process Safety
- Year: 2016
- Proceeding: 2016 Spring Meeting and 12th Global Congress on Process Safety
- Group: Spring Meeting Poster Session and Networking Reception
Monday, April 11, 2016 - 5:00pm-7:00pm
Copper-Phyllosilicate Core-shell Nanocatalysts with Balanced
Active Sites for Carbon-Oxygen
Hairong Yue, Weimao Fang, Changmin Liu, Jiankang Ying
Hydrogenolysis of carbon-oxygen (C¨CO) bonds (e.g.,
esters, ethers, furfural, and CO2) has emerged as a versatile synthetic
tool in organic methodology, as it could produce a variety of products (e.g.,
chemicals, fuels, and polymers). Copper-based catalysts have been intensively explored for hydrogenation
reactions as the copper sites
account for the selective hydrogenation of carbon-oxygen bonds and relatively
inactive for the hydrogenolysis of carbon-carbon bonds. Work on
understanding the active sites of copper catalysts for hydrogenation reactions indicted that both Cu0 and
Cu+ species were crucial to the activity of Cu-based
catalysts. However, researchers were not able to establish a relationship
between activity and Cu0/Cu+ active species since the conventional Cu-based
catalysts is the deactivation by metal particle growth and unstable surface Cu0
and Cu+ active species in the strong reductive H2 and
oxidizing carbon-oxygen atmosphere.
present on efficient approaches for fabrication of a series of copper-phyllosilicate core-shell nanocatalysts and
nanoreactors with balanced and stable Cu0 and Cu+
active species. We chose the hydrogenation
of dimethyl oxalate, ethylene cyclicarbonate
and as probe reactions for a better understanding of properties of active sites
and the structure-activity relationship. The results indicated a synergy between copper
and the oxide components and the balanced surface Cu0 and Cu+
species can greatly improve the catalytic C-O hydrogenolysis performance of the
catalysts. These nanocatalysts with
balanced and stable Cu0 and Cu+ active species, confinement effect,
intrinsic high surface of Cu0 and Cu+ and unique tunable tubular
morphology, has potential applications in the high-temperature hydrogenation reactions.
Keywords: core-shell nanocatalysts,
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