| Title: | Oxy-Anionic Doping: A New Strategy for Improving Selectivity of Ru/CeO(2) with Synergetic Versatility and Thermal Stability for Catalytic Oxidation of Chlorinated Volatile Organic Compounds |
| Author(s): | Shen K; Gao B; Xia H; Deng W; Yan J; Guo X; Guo Y; Wang X; Zhan W; Dai Q; |
| Address: | "Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China. Erdos Electric Power and Metallurgy Group Co. Ltd., Ordos 016064, Inner Mongolia, P. R. China. School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, P. R. China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Understanding the formation and inhibition of more toxic polychlorinated byproducts from the catalytic oxidation elimination of chlorinated volatile organic compounds (Cl-VOCs) and unveiling efficient strategies have been essential and challenging. Here, RuO(x) supported on CePO(4)-doped CeO(2) nanosheets (Ru/Pi-CeO(2)) is designed for boosting catalytic oxidation for the removal of dichloromethane (DCM) as a representative Cl-VOC. The promoted acid strength/number and sintering resistance due to the doping of electron-rich and thermally stable CePO(4) are observed along with the undescended redox ability and the exposed multi-active sites, which demonstrates a high activity and durability of DCM oxidation (4000 mg/m(3) and 15,000 mL/g.h, stable complete-oxidation at 300 degrees C), exceptional versatility for different Cl-VOCs, alkanes, aromatics, N-containing VOCs, CO and their multicomponent VOCs, and enhanced thermal stability. The suppression of polychlorinated byproducts is determined over Ru/Pi-CeO(2) and oxy-anionic S, V, Mo, Nb, or W doping CeO(2), thus the oxy-anionic doping strategy is proposed based on the quenching of the electron-rich oxy-anions on chlorine radicals. Moreover, the simple mechanical mixing with these oxy-anionic salts is also workable even for other catalysts such as Co, Sn, Mn, and noble metal-based catalysts. This work offers further insights into the inhibition of polychlorinated byproducts and contributes to the convenient manufacture of monolithic catalysts with superior chlorine-poisoning resistance for the catalytic oxidation of Cl-VOCs" |
| Keywords: | Anions Catalysis Chlorine Oxidation-Reduction *Volatile Organic Compounds Cl-VOCs catalytic combustion chlorine radical dichloromethane oxometalate anions rare-earth oxysalts; |
| Notes: | "MedlineShen, Kai Gao, Biao Xia, Hangqi Deng, Wei Yan, Jiaorong Guo, Xiaohan Guo, Yanglong Wang, Xingyi Zhan, Wangcheng Dai, Qiguang eng Research Support, Non-U.S. Gov't 2022/05/11 Environ Sci Technol. 2022 Jun 21; 56(12):8854-8863. doi: 10.1021/acs.est.2c00942. Epub 2022 May 10" |
