Journal
CATALYSIS COMMUNICATIONS
Volume 125, Issue -, Pages 87-92Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2019.04.003
Keywords
Tetralin; Molecular oxygen; Selective oxidation; alpha-Tetralone; Manganese oxide; Cobalt oxide
Categories
Funding
- Anhui Provincial Natural Science Foundation [1908085QB68, 1608085QF156]
- Research Fund for Young Teachers of Anhui University of Technology [QZ201610]
- open research funds of Engineering Research Center of Nano-Geo Materials of Ministry of Education [NGM2019KF028]
- National Natural Science Foundation of China [21376005]
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A series of (aMnO(x)-CoOy)(r)/gamma-Al2O3 catalysts with different molar ratio of metal and supports (r denotes as the molar ratio of metal and supports, r = 0.02,0.03,0.04,0.05,0.06,0.08) and varied metal molar ratio(a stands for the molar ratio of Mn:Co, r = 1/3,1/1,3/1,6/1,1/0) were fabricated through impregnation route and characterized using X-ray diffraction (XRD), Inductively coupled plasma-atomic emission spectrometry (ICP-AES), N-2 adsorption-desorption, X-ray photoelectron spectroscopy (XPS), H-2 temperature programmed reduction (H-2-TPR) and Scanning emission microscope (SEM). Among the catalysts investigated, (3MnO(x)-CoOy)(0.04)/gamma-Al2O3 exhibited the highest activity and stable recyclability in the selective oxidation of tetralin using oxygen as the oxidant with a tetralin conversion of 68% and alpha-getralone selectivity of 75% under the optimized conditions, affording a TOF value of 6.53 h(-1), where the optimal reaction temperature is 120 degrees C and the reaction time is 8 h.
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