Preparation of Kaolin/Cu2O Photocatalyst and its Application in the Photocatalytic Oxidation-Extraction Desulfurization

2012 ◽  
Vol 518-523 ◽  
pp. 878-883 ◽  
Author(s):  
Feng Xing Niu ◽  
Feng Fu ◽  
Xiao Ming Gao ◽  
Xue Mei Zhang ◽  
Yu Fei Wu
Keyword(s):  
Reaction Time ◽  
Photocatalytic Oxidation ◽  
Model Compound ◽  
Liquid Extraction ◽  
Desulfurization Rate ◽  
Visible Light Photocatalyst ◽  
Liquid Liquid Extraction ◽  
Model Fuel ◽  
Desulfurization Process ◽  
Desulfurization Efficiency

A type of visible light photocatalyst kaolin/Cu2O was prepared from kaolin, CuCO3·Cu(OH)2·XH2O, NaOH and C6H12O6 by means of hydrothermal method and was characterized by XRD, SEM and UV-vis. The desulfurization process for model fuel was studied based on a combination of photochemical reaction and liquid-liquid extraction. The effects of the doping of kaolin, volume of air, reaction time, and dosage of photocatalyst kaolin/Cu2O on the desulfurization efficiency were also investigated. When the load kaolin ratio of 20%, reaction time is 2 h, the volume of O2 is 150 mL·min-1, the amount of kaolin/Cu2O is 2 g·L-1 and solvent/oil ratio of 0.5, the desulfurization rate of model compound reached over 97 %.

scholarly journals Influence of UiO-66(Zr) Preparation Strategies in Its Catalytic Efficiency for Desulfurization Process

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3009 ◽  
Author(s):  
Alexandre M. Viana ◽  
Susana O. Ribeiro ◽  
Baltazar de Castro ◽  
Salete S. Balula ◽  
Luís Cunha-Silva
Keyword(s):  
Reaction Time ◽  
Metal Organic Framework ◽  
Oxidative Desulfurization ◽  
Catalytic Efficiency ◽  
Porous Metal ◽  
Catalytic Performance ◽  
Cooling Time ◽  
High Catalytic Activity ◽  
Desulfurization Process ◽  
Desulfurization Efficiency

Porous metal-organic framework (MOF) materials UiO-66(Zr) obtained by solvothermal and microwave advanced synthesis (MWAS) procedures were characterized, and their catalytic efficiency was investigated for oxidative desulfurization (ODS) processes using a multicomponent model diesel containing benzothiophene and dibenzothiophene derivatives. The preparation parameters as the cooling time after oven use in the solvothermal procedure, and also the reaction time in the MWAS method seemed to play an important role in the catalytic performance of the UiO-66(Zr) material, as well as in its recycle capacity. The material prepared by the solvothermal procedure with a fast cooling time showed the best catalytic performance (desulfurization efficiency of 99.5% after 3 h). However, the application of the UiO-66(Zr) material prepared by the MWAS method (desulfurization efficiency of 96% after 3 h) conciliated a higher number of advantages, such as shorter reaction time preparation (15 min) and high catalytic activity for a higher number of reaction cycles. The UiO-66(Zr) prepared by the MWAS method was used for the first time in an oxidative desulfurization process, and according to the catalytic results obtained (high recycle capacity and stability) and shorter reaction time preparation, seems to be a promising material for industrial application.

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