| Autor: |
Belykh, Lyudmila B., Skripov, Nikita I., Sterenchuk, Tatyana P., Akimov, Vladlen V., Tauson, Vladimir L., Milenkaya, Elena A., Schmidt, Fedor K. |
| Předmět: |
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| Zdroj: |
European Journal of Inorganic Chemistry; 11/25/2021, Vol. 2021 Issue 44, p4586-4593, 8p |
| Abstrakt: |
The properties of the catalyst based on structurally disordered Pd−P nanoparticles supported on a carbon support (Pd−P/C) in the preparation of hydrogen peroxide by the anthraquinone method have been studied. It is shown that a high yield of H2O2 is observed upon sequential hydrogenation of 2000 mol of eAQ (mol Pd)−1. The H2O2 yield reaches 96 %–97 %. Pd−P nanoparticles are more active in the hydrogenation of 2‐ethyl‐9,10‐anthraquinone than Pd6P crystalline phosphide. In terms of H2O2 yield, Pd−P/C catalysts are superior to known catalysts: Pd/C, Pd/Al2O3. Based on the data of X‐ray powder diffraction, X‐ray photoelectron spectroscopy, Inductively Coupled Plasma and thermogravimetry, the main reasons for the deactivation of Pd−P/C catalysts have been established. Crystallization of the structurally disordered Pd−P nanoparticles, poisoning by eAQ conversion products and leaching of the active component are considered to be possible reasons of the Pd−P/C catalyst deactivation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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