10.1002/cplu.201900657
ChemPlusChem
FULL PAPER
Characterization
Keywords: Heterogeneous catalysis, hydrogenation,
nanostructures, silica , rhodium
Scanning electron microscopy (SEM) measurements were performed on
a JEOL JSM-6700F field-emission electron microscope. Transmission
electron microscopy (TEM) images were carried out using a FEI Tecnai
G2 F20s-twin D573 field emission transmission electron microscope at
200 kV. The crystal structures were determined by a Rigaku 2550 X-ray
diffractometer (XRD) equipped with a Cu Ka irradiation source. N2
adsorption−desorption isotherms were recorded using a Micromeritics
ASAP 2010 sorptometer at −196 °C. Before performing the
measurements, all samples were degassed at 120°C for a minimum
period of 12 h. The specific surface area of the solid material was
calculated by the conventional Brunauer−Emmett−Teller (BET) method
from the linear portion of the BET plot. Pore size distribution was
estimated from the adsorption branch of the isotherm by the DFT method.
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Acknowledgements
This work was supported by the National Natural Science
Foundation of China (21390394, 21771082, 21771081, and
21703128), the National Basic Research Program of China
(2012CB821700 and 2011CB808703), Natural Science
Foundation of Jilin Province (20190201207JC) and the “111”
project (B07016).
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Conflict of Interest
[19] D. J. Cole-Hamilton, R. P. Tooze, Springer Science & Business Media
2006.
The authors declare no conflict of interest.
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