Study on deactivation and regeneration of Pd/Al2O3 catalyst in hydrogen peroxide production by the anthraquinone process |
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| Authors: | Qingfa Wang Li Wang Yaquan Wang Fei He Zhenhua Li Zhentao Mi |
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| Affiliation: | (1) School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P.R. China;(2) State Key Laboratory of C1 Chemical Technology, Tianjin University, Tianjin, 300072, P.R. China |
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| Abstract: | Deactivated palladium catalysts in the hydrogenation of anthraquinione were regenerated with ethanol, nitric acid, hydrogen peroxide, boiling water and steam, respectively. The deactivated and regenerated catalysts were characterized by XPS, ICP, TG, FTIR, TPD, XRD, etc., and studied in the hydrogenation of anthraquinone. The results showed that the main cause of catalyst deactivation is the coverage of the active component by deposits. The treatments by hydrogen peroxide and boiling water can effectively regenerate the deactivated catalysts. This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | Anthraquinone route palladium catalyst regeneration deactivation |
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