Constructing
a cheap and high-performance catalyst is very important
for the selective synthesis of biomass-based 2,5-bis(hydroxymethyl)furan
(BHMF) from 5-hydroxymethylfurfural via the strategy of catalytic
transfer hydrogenation (CTH). Herein, we synthesized a neoteric zirconium–carbon
coordination catalyst (Zr-HTC) via a simple self-assembly method,
in which glucose-derived hydrothermal carbon (HTC) containing abundant
carboxyl and phenolic hydroxyl groups was directly used as a low-cost
organic ligand. Satisfyingly, Zr-HTC showed an outstanding catalytic
activity for the selective synthesis of BHMF in isopropanol (iPrOH). After 4 h at a mild temperature of 120 °C,
99.2% BHMF yield with 5.61 h–1 turnover frequency
(TOF) could be obtained. Detailed experimental results demonstrated
that this outstanding catalytic activity of Zr-HTC was mainly contributed
by the synergetic effects of Lewis acid–base sites (Zr4+–O2–) with high contents, proper
ratios, and strengths under the aid of good hydrophilicity. In addition,
Zr-HTC displayed superior catalytic stability, and when it was repeatedly
used for five reaction cycles, no noticeable decrease in BHMF yield
was found. More significantly, Zr-HTC could also effectively convert
a wide range of carbonyl compounds, such as 1-butanal, 1-hexanal,
furfural, cyclohexanal, benzaldehyde, phenylacetaldehyde, cyclopentanone,
cyclohexanone, levulinic acid, and ethyl levulinate, to the relevant
products in iPrOH. Overall, this work offers a new
viewpoint to develop more practical zirconium-containing coordination
catalysts for the selective synthesis of valuable chemicals via CTH.