期刊
CATALYSIS LETTERS
卷 96, 期 1-2, 页码 29-32出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/B:CATL.0000029525.33197.89
关键词
gallium oxide catalyst; silica; dehydrogenation; propane; aromatization; H-2 pre-treatment
The pre-treatment of a silica-supported gallium oxide catalyst with H-2 at 823 K increased the yield of aromatics and the selectivity to aromatics in the dehydrogenation of propane over the catalyst at 823 K. Gallium oxide in the catalyst was partially reduced with H-2 at 823 K. NH3 desorption and DRIFTS studies on the gallium oxide catalyst suggest that the dehydrogenation of propane over a silica-supported gallium oxide catalyst would proceed in the following way: (1) the dehydrogenation of propane to produce propene would occur on Ga sites including Gad(delta+)-H sites and (2) the aromatization of propene to aromatics on Ga-O-H acid sites.
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