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Chemcial Industry and Engineering 2023, Vol. 40 Issue (6) :28-36    DOI: 10.13353/j.issn.1004.9533.20230130
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Pd/Al-Al2O3 catalyst for anthraquinone hydrogenation to hydrogen peroxide
YUAN Qinqin, LIANG Jingyue, LI Wei, ZHANG Jinli, GUO Cuili
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

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Abstract Hydrogenation of anthraquinone to produce H2O2 is a great important industrial reaction. Here, a series of Pd/xAl-Al2O3catalysts with different AlCl3 contents were prepared by step impregnation method. The catalysts were characterized and analyzed based on XRD, TEM, NH3-TPD, XPS and N2 adsorption and desorption. The Pd/1.0Al-Al2O3 catalyst with 1% AlCl3 content exhibits excellent hydrogenation efficiency of 8.3 g·L-1 and selectivity of 99.5% toward anthraquinone hydrogenation, obviously superior to Pd/Al2O3 catalyst (5.2 g·L-1 and 97.2%). The characterization results show that the catalysts modified by AlCl3 have abundant surface weak acids, which provide more adsorption sites for anthraquinone molecules. At the same time, the introduction of AlCl3 could improve the dispersion of metal and increase the interaction between the metal particles and the support, which inhibits the agglomeration and loss of metal particles.
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YUAN Qinqin
LIANG Jingyue
LI Wei
ZHANG Jinli
GUO Cuili
Keywordsanthraquinone hydrogenation   H2O2   Pd/Al2O3   AlCl3   weak acid     
Received 2023-03-08;
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YUAN Qinqin, LIANG Jingyue, LI Wei, ZHANG Jinli, GUO Cuili.Pd/Al-Al2O3 catalyst for anthraquinone hydrogenation to hydrogen peroxide[J]  Chemcial Industry and Engineering, 2023,V40(6): 28-36
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