Topic
Wet oxidation
About: Wet oxidation is a research topic. Over the lifetime, 3094 publications have been published within this topic receiving 61536 citations.
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TL;DR: In this article, small ruthenium oxyhydroxide nanoparticles supported on N-doped graphene were used for the conversion of glucose into succinic acid under wet oxidation conditions (160 oC, 18 atm O2 pressure).
Abstract: Impregnation of RuCl3 on N-doped graphenes results in the formation of well-dispersed, small ruthenium oxyhydroxide nanoparticles supported on N-doped graphene that may exhibit high selectivity (87 %) for the conversion of glucose into succinic acid under wet oxidation conditions (160 oC, 18 atm O2 pressure). Ruthenium loading and N atom distribution on graphene influence the catalytic activity, the best performing catalyst having 1 wt% Ru loading on a graphene having a large population of graphenic N atoms. The high catalytic selectivity to succinic acid has been correlated with the presence of small ruthenium nanoparticles. The present catalyst improves the best one previously reported, since it does not require the continuous addition of an excess of amine to reach high succinic acid selectivity and reusability.
18 citations
TL;DR: In this article, the results on catalytic wet air oxidation applied to a membrane contactor are presented that give new insight following a series of previous publications, which show performances heavily depend on the nature of the effluent and the operating conditions, and to a lesser extent on the catalytic membrane characteristics.
Abstract: Recent results on catalytic wet air oxidation applied to a membrane contactor are presented that give new insight following a series of previous publications. Model and industrial effluents are treated in both single tube and multichannel catalytic systems. Characterisation of the catalytic material (solid analyses, electron microscopy, EDS and EPMA) is carried out, in order to determine the catalyst distribution. Catalytic results show performances heavily dependent on the nature of the effluent and the operating conditions, and to a lesser extent on the catalytic membrane characteristics. At 80 8C, an industrial effluent is oxidised at a membrane surface related rate of 3.8 mmol/s/m 2 . This result is achieved using a
18 citations
TL;DR: In this paper, the simultaneous wet air oxidation of nitrobenzene (NB) and phenol with homogeneous catalyst was carried out in a stainless autoclave in a temperature range of 150-210 °C and at a partial oxygen pressure of 1.0 MPa.
18 citations
TL;DR: In this article, nonirradiated, stress-relieved Zircaloy-4 claddings were oxidized at 350, 400, 450 and 500 °C in air.
18 citations
TL;DR: A series of Ce/Mn oxides has been characterized using a variety of complementary transmission electron microscopy techniques to obtain nanometer scale information on the structure, chemical composition, and oxidation states of the different phases present in this extremely complex system as mentioned in this paper.
Abstract: A series of Ce/Mn oxides has been characterized using a variety of complementary transmission electron microscopy techniques to obtain nanometer scale information on the structure, chemical composition, and oxidation states of the different phases present in this extremely complex system. The phases have been identified to be α-Mn2O3, β-MnO2, mixed-valence manganese oxides (Mn3O4 and Mn5O8), and Ce−Mn mixed oxides in different proportions depending on the Ce/Mn atomic ratio. A correlation between the nanostructure of this composite system and its catalytic activity for the wet oxidation of phenol, as a model contaminant, is proposed.
18 citations