Preparation of Fe/Co bimetallic oxide loaded hydrophobic & catalytic bifunctional membrane and its catalytic performance in sulfite oxidation
Lijuan Feng,
Jie Liu,
Shizhao Wang,
Yingying Zhao,
Fei Li,
Xiaofu Guo,
Junsheng Yuan
Affiliations
Lijuan Feng
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China
Jie Liu
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China; Corresponding author. School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China.
Shizhao Wang
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China
Yingying Zhao
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China
Fei Li
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China
Xiaofu Guo
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China
Junsheng Yuan
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; Engineering Research Center of Seawater Utilization of Ministry of Education, Tianjin, 300130, PR China; Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin, 300130, PR China
Sulfite oxidation is critical for the stable operation of desulfurization process and the treatment & recovery of desulfurization by-products. The Fe and Co oxides modified super hydrophobic layer was prepared on tubular ceramic membranes using hydrothermal synthesis and surface modifications to realize the combination of the membrane catalysis and membrane aeration. These two oxides were approximately two-layer distributed on the membrane surface, among which the Fe2O3 located in the bottom layer and the Co3O4 located in the upper layer. The catalytic rate of the bifunctional membrane was about 5.8 times than that of the original ceramic membrane, which was decreased with the increasing of Fe/Co ratio and declined after an initial rise with the increase of urea and cetyltrimethylammonium bromide. The conjoint effect of Fe and Co could improve the catalytic performance and reduce the dissolution loss of catalyzer. The oxidation rate tended to be constant after a 15 % decrease in 7 times experiments.
