Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis
The molten-salt electrolytic method was employed to recycle spent SCR catalyst to prepare TiC compound. A systematic investigation has been carried out through thermodynamic calculation and experimental analysis. The effects of graphite content, cell voltage, electrolyzing temperature, and electroly...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/15/2/141 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849718985903308800 |
|---|---|
| author | Weigang Cao Qi Zhu Long Zheng Jiahao Jin Xiangpeng Li Yanan Xu |
| author_facet | Weigang Cao Qi Zhu Long Zheng Jiahao Jin Xiangpeng Li Yanan Xu |
| author_sort | Weigang Cao |
| collection | DOAJ |
| description | The molten-salt electrolytic method was employed to recycle spent SCR catalyst to prepare TiC compound. A systematic investigation has been carried out through thermodynamic calculation and experimental analysis. The effects of graphite content, cell voltage, electrolyzing temperature, and electrolyzing time on electrolytic products were explored. The results show that a suitable amount of graphite content, high cell voltage, and a high electrolyzing temperature are beneficial to promote the formation of TiC compounds. It has also been found that the electroreduction of spent SCR catalyst/graphite can completely transform it into TiC compound in a relatively short time. The final electrolytic product is confirmed to be a solid solution of (Ti, W, Si, V)C. Meanwhile, the electrolytic process and reaction mechanism were investigated through the analysis of intermediates and the thermodynamic calculation. The electrolytic product has a potential application as reinforcement in metal matrix, which is a high additional-value utilization for spent SCR catalysts. |
| format | Article |
| id | doaj-art-a9ca8a4c151b42aba2c8fedf6a01e35c |
| institution | DOAJ |
| issn | 2073-4352 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj-art-a9ca8a4c151b42aba2c8fedf6a01e35c2025-08-20T03:12:14ZengMDPI AGCrystals2073-43522025-01-0115214110.3390/cryst15020141Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt ElectrolysisWeigang Cao0Qi Zhu1Long Zheng2Jiahao Jin3Xiangpeng Li4Yanan Xu5College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaThe molten-salt electrolytic method was employed to recycle spent SCR catalyst to prepare TiC compound. A systematic investigation has been carried out through thermodynamic calculation and experimental analysis. The effects of graphite content, cell voltage, electrolyzing temperature, and electrolyzing time on electrolytic products were explored. The results show that a suitable amount of graphite content, high cell voltage, and a high electrolyzing temperature are beneficial to promote the formation of TiC compounds. It has also been found that the electroreduction of spent SCR catalyst/graphite can completely transform it into TiC compound in a relatively short time. The final electrolytic product is confirmed to be a solid solution of (Ti, W, Si, V)C. Meanwhile, the electrolytic process and reaction mechanism were investigated through the analysis of intermediates and the thermodynamic calculation. The electrolytic product has a potential application as reinforcement in metal matrix, which is a high additional-value utilization for spent SCR catalysts.https://www.mdpi.com/2073-4352/15/2/141spent SCR catalystelectrolytic reductiontitanium carbiderecycle |
| spellingShingle | Weigang Cao Qi Zhu Long Zheng Jiahao Jin Xiangpeng Li Yanan Xu Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis Crystals spent SCR catalyst electrolytic reduction titanium carbide recycle |
| title | Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis |
| title_full | Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis |
| title_fullStr | Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis |
| title_full_unstemmed | Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis |
| title_short | Upcycling Spent Selective-Catalytic-Reduction Catalyst to Produce Titanium Carbide Through Molten-Salt Electrolysis |
| title_sort | upcycling spent selective catalytic reduction catalyst to produce titanium carbide through molten salt electrolysis |
| topic | spent SCR catalyst electrolytic reduction titanium carbide recycle |
| url | https://www.mdpi.com/2073-4352/15/2/141 |
| work_keys_str_mv | AT weigangcao upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis AT qizhu upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis AT longzheng upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis AT jiahaojin upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis AT xiangpengli upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis AT yananxu upcyclingspentselectivecatalyticreductioncatalysttoproducetitaniumcarbidethroughmoltensaltelectrolysis |