| Title: | Effect of Absorbed Sulfate Poisoning on the Performance of Catalytic Oxidation of VOCs over MnO(2) |
| Author(s): | Wu P; Zhao S; Yu J; Jin X; Ye D; Yang S; Qiu Y; |
| Address: | "Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China. Guangzhou International Economics College, No.28 Dayuanbei, Baiyun District, Guangzhou, Guangdong 510540, China. State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, China. Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "Manganese oxides have displayed vast potential for future development in the field of catalytic abatement of volatile organic compounds (VOCs) because of their low cost, high stability, and enhanced catalytic activity. Manganese sulfate and manganese chloride are widely used as reaction sources to prepare manganese oxides. As reported, absorbed chloride usually affects the performance of catalysts. However, the effect of absorbed sulfate on catalysts has been overlooked at present. Herein, the poisoning effect of absorbed sulfate on MnO(2) catalyst in the catalytic oxidation of VOCs has been uncovered. Manganese sulfate-derived MnO(2) catalyst exhibits a significantly enhanced performance after repeated washing by water, which indicates that absorbed sulfate has an adverse effect on MnO(2) catalyst for removal of VOCs. The blocking of the surface oxygen species and active sites is considered as the reason for sulfate poisoning. Hence, elimination of absorbed sulfate by thorough washing or other effective method is essential for preparing high-performance manganese sulfate-derived manganese oxide catalysts" |
| Keywords: | MnO2 VOCs catalytic oxidation sulfate poisoning washing treatment; |
| Notes: | "PubMed-not-MEDLINEWu, Peng Zhao, Shuaiqi Yu, Jiawen Jin, Xiaojing Ye, Daiqi Yang, Shihe Qiu, Yongcai eng 2020/10/31 ACS Appl Mater Interfaces. 2020 Nov 11; 12(45):50566-50572. doi: 10.1021/acsami.0c17042. Epub 2020 Oct 30" |
