Study On Catalytic Properties And Electrical Conductivity Over Antioxidant Catalysts For Reductive Desulphurization

The catalyst system of LaCoO3 with good capability of resisting oxygen poisoning is drawing more and more attention in the area of flue gas desulphurization (FGD). And which is the active phase in this catalyst system is the essential problem in the area. So in this paper, the catalyst system of LaCoO3 was researched. And the researching began from the electrical property. In order to find the reason why this catalyst system acted so well, we studied the catalytic activity for FGD and the electrical properties while different phase was introduced in the catalyst system.The research results shows: Aiming at the most impossible phases of the catalyst system of LaCoO3, none but the adding of CoO could enhance the capability of resisting oxygen poisoning; The capability of resisting oxygen poisoning of the catalyst has relation with the capability of electron transfer over the catalyst.The stronger capability of electron transfer over the catalyst is, the stronger capability of resisting oxygen poisoning is; In addition, the capability of resisting oxygen poisoning of the catalyst also relates to the absorption of SO2 and CO, especially to the absorption of CO; With different phases added in the system, the effect of the sample and the SO2 and CO is different. Compared with the adding of CoO, the adding of La2O3 has more effect on the effect of the sample and CO. Maybe that is the reason why the adding of CoO could get stronger capability of resisting oxygen poisoning than La2O3.