Preparation of High Oxygen Vacancies Catalyst CeO/AlO-Sic and its Mechanism in Enhancing the Catalytic Ozonation of Organic Pollutants in Coal Chemical Wastewater
SSRN, ISSN: 1556-5068
2024
- 79Usage
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
This study addresses the issue of incomplete harmless treatment of aromatic organic compounds in coal chemical wastewater (CCW) by designing and preparing a kind of Ce&Al bimetallic catalyst with high oxygen vacancies (OVs) based on the SiC carrier. The degradation efficiency and enhancement mechanism of the catalyst on aromatic hydrocarbons with ozone oxidation were investigated. The results showed that CeO and AlO were uniformly dispersed on SiC, and the composite material exhibited an ordered cubic structure. When applied to actual CCW with a chemical oxygen demand (COD) concentration exceeding 600 mg/L, the synergy between O3 and O and CeO/AlO-SiC increases the degradation efficiency of phenols from 50 % to 99 % and COD from 42 % to 78 %. O and CeO/AlO-SiC had a high concentration of oxygen vacancy (OV= 48.57 %). Further research indicated that oxygen vacancies (OVs) were the main active sites for ozone adsorption and ROSs generation. EPR and quenching experiments also confirmed that O, •OO were the main active oxidation factors, rather than •OH. Additionally, even after granulating the catalyst, it still achieved 99 % degradation of phenols. Therefore, this study provides theoretical support for the complete harmless treatment of CCW and has broad prospects for industrial application.
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