Abstracts Book - IMRC 2018

• SC7-O003
FACILE ZIF-67@meso-Al2O3 COMPOSITE MATERIAL AND THEIR
APPLICATION FOR CATALYST
Somboon Chaemchuen 1,2 , Francis Verpoort 2
1 National Research Tomsk Polytechnic University, , Russia. 2 Wuhan University of Technology,
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, China.
High porous materials such as metal-organic frameworks (MOFs) have emerged
as promising materials for several applications, especially, for catalysts and/or
supporting materials, due to the versatile structure constructed abundant metal
ion/clusters bridging with organic compounds to tailor tunable porosity and
properties of these materials. Metal/metal oxide or organometallic complexes
on various forms of supporting materials such as alumina, silica, aluminum
silicates, or zeolites etc., are most successful and well known in the field of
heterogeneous catalysis. The deposition of millimeter-sized zeolitic imidazole
frameworks (ZIF-67) on meso-Al 2 O 3 (ZIF-67@Al 2 O 3 ; a composite material) was
our goal. The meso-Al 2 O 3 surface was functionalized with a surfactant before
nanocrystals of ZIF-67 (dip-coating method) were allowed to grow. The effect of
surfactant amount and synthesis conditions and the resulting product
properties of the composite material were investigated. The ZIF-67 depositing
level, and hence the degree of microporosity in the composites, can be tuned by
varying the synthesis conditions and the number of repeating synthesis cycles.
powder-XRD, SEM, TEM, ICP, surface and porosity analysis etc., were used to
characterize the composite material and revealed a hierarchical porosity of this
composite material. The ZIF-67@Al 2 O 3 composite was applied for catalytic
reactions such a Knoevenagel condensation reaction and CO 2 fixation reaction.
The new material displays an enhanced catalytic performance compared with
meso-Al 2 O 3 and an improved mechanical stability over bulk ZIF-67. The
advantage of the composite material can be found in the recyclability of the
heterogeneous catalyst and the stability compared with the pure ZIF-67.
Keywords: MOFs, Heterogeneous catalyst, composite material
Presenting authors email: sama_che@hotmail.com