Catalysts Ru–CeO2/Sibunit for catalytic wet air oxidation of aniline and phenol

Abstract

Catalytic properties of carbon materials Sibunit (commercial samples) and ceria-promoted precious metals (Ru, Pt, Pd) supported on carbon were studied in the processes of catalytic wet air oxidation (CWAO) of aniline and phenol at elevated pressures and temperatures (T ¼ 433-473 K, P O2 ¼ 0.3-1.0 MPa). It was found that the activity increases when the catalyst is pretreated with hydrogen peroxide. An efficiency of Ru-CeO 2 /Sibunit catalyst with a low ruthenium content (~0.6% Ru) for deep cleaning of polluted waters is demonstrated.

Ruthenium nanoparticles supported on nitrogen-doped carbon nanofibers for the catalytic wet air oxidation of phenol

“…2). Our present and previous works [26,28,39] differ from the works by other authors [32][33][34][35][36][37][38]: before using carbon materials, we carefully washed them with an acid to remove surface metal impurities and controlled the contents of metals (Ni, Cu, Fe) on the surface of catalysts by XPS, and in the solution after the reaction by ICP-OES. Note that the contents of transition metals (Ni for N-CNFs and Sibunit, Cu for NCNFs, and Fe for Sibunit) in solutions after reactions did not exceed the contents of the same metals in blank experiments.…”

“…In a number of recent publications, it has been found that the commercial active carbons are highly active in wet air oxidation of phenol in the absence of supported active metals [32][33][34][35][36][37][38]. Therefore, at the beginning we tested N-CNFs and Sibunit in CWAO of phenol at a temperature of 160 • C and at a pressure of 50 bar.…”

Oxidation of 5-Hydroxymethylfurfural on Supported Ag, Au, Pd and Bimetallic Pd-Au Catalysts: Effect of the Support

“…Sibunit material, which combines the properties of graphite (strength characteristics, corrosion resistance) and active carbons (developed surface, etc. ), is a suitable support for catalysts for liquid-phase oxidation processes [31][32][33].…”

Highly efficient degradation of high-loaded phenol over Ru–Cu/Al2O3 catalyst at mild conditions

“…The modi-cation of supported Ru catalysts with secondary metals is oen effective in degradation of organic compounds. 22,35,36 The performance of Ru-M/Al 2 O 3 catalysts is shown in Fig. 2.…”