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Palladium‐Containing and Metal‐Free Supported Dendrons As Catalysts in Multistep Conversion of Oxygenates to Fuels
Author(s) -
Lou Yueyun,
Shantz Daniel F.
Publication year - 2019
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.201801584
Subject(s) - cyclohexanone , chemistry , palladium , aldol reaction , aldol condensation , cyclohexanol , yield (engineering) , catalysis , dendrimer , organic chemistry , aldehyde , phenol , materials science , metallurgy
This article reports a three‐step process: 1) the hydrogenation of phenol, 2) aldol condensation between the cyclohexanone produced in reaction 1 and an aldehyde, and 3) hydrogenation of the aldol reaction product. This is achieved using palladium containing supported dendrons for reactions 1 and 3 and non‐metal containing supported dendrons for reaction 2. Palladium/dendron‐OMS catalyzes the phenol hydrogenation with a cyclohexanol yield of 85 %, the parent dendrons (no Pd) catalyze the Aldol reaction with over 80 % yield in some cases, and the Pd‐dendron samples can be used to hydrogenate the aldol coupling product at high yields, not dissimilar from what one observes from aqueous phase reforming (APR). The operating conditions of low temperature and low‐pressure hydrogen in aqueous media are consistent with green chemistry goals.