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6936366 
Journal Article 
One-Pot Synthesis of Anthraquinone Catalyzed by Microwave Acetic Acid Modified H beta Zeolite 
Wang, T; Yu, H; Bian, B; Liu, Yue; Liu, S; Yu, S; Wang, Z; , 
2020 
Yes 
Catalysis Letters
ISSN: 1011-372X
EISSN: 1572-879X 
SPRINGER 
NEW YORK 
150 
10 
3007-3016 
English 
WOS:000525479900002 
H beta zeolite is modified in the microwave acetic acid and evaluated in the one-pot synthesis of anthraquinone from benzene and phthalic anhydride. Under the optimized conditions, the H beta zeolite modified in 0.9 mol/L acetic acid solution exhibits the best catalytic activity, in which the conversion of phthalic anhydride and its selectivity to anthraquinone are 54.71% and 62.56%, respectively. A series of catalysts are characterized using BET, XRD, XRF, NH3-TPD, FT-IR, Py-IR, SEM, and XPS. The high activity is mainly attributed to the suitable acid strength. Increasing the specific surface area and pore volume fraction also promotes the reaction. On the other hand, the deposition of carbon atoms results in the deactivation of the catalyst. However, the catalytic activity can be effectively recovered by calcination regeneration, and still shows good catalytic activity after five times.[GRAPHICS]. 
Anthraquinone; Zeolite; Catalysis; Hydrogenation; Microwave; Acetic acid modification