Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid
A series of K<sub>x</sub>H<sub>1.1-x</sub>Cu<sub>0.2</sub>Cs<sub>1</sub>(NH<sub>4</sub>)<sub>1.5</sub>PVMo<sub>11</sub>O<sub>40</sub> (KxCuCsNH<sub>4</sub>PVA) catalysts with different <i&g...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/3/394 |
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| author | Baohe Wang Honggang Dong Liang Lu Hongxia Liu Zhaobang Zhang Jing Zhu |
| author_facet | Baohe Wang Honggang Dong Liang Lu Hongxia Liu Zhaobang Zhang Jing Zhu |
| author_sort | Baohe Wang |
| collection | DOAJ |
| description | A series of K<sub>x</sub>H<sub>1.1-x</sub>Cu<sub>0.2</sub>Cs<sub>1</sub>(NH<sub>4</sub>)<sub>1.5</sub>PVMo<sub>11</sub>O<sub>40</sub> (KxCuCsNH<sub>4</sub>PVA) catalysts with different <i>x</i> values were synthesized to catalyze the selective oxidation of methacrolein (MAL) to methacrylic acid (MAA). The effects of potassium (K) ions on both the structure and catalytic activity were studied in detail. The optimum K<sub>0.6</sub>CuCsNH<sub>4</sub>PVA exhibited a large surface area, more acid sites, and abundant active species (V<sup>4+</sup>/VO<sup>2+</sup>) in the secondary structure of the Keggin structure, consequently offering good catalytic performance. Furthermore, K ions increased the MAA selectivity at the expense of carbon monoxide and carbon dioxide (together defined as CO<sub>X</sub>). Additionally, several process parameters for MAL oxidation were evaluated in the processing experiments. The effects of aldehyde impurities (formaldehyde and propanal) on the catalytic performance were investigated. Possible detrimental effects (catalyst poisoning and structural damage) of aldehyde impurities were excluded. A light decrease in MAL conversion could be attributed to the competitive adsorption of aldehyde impurities and MAL on the catalyst. Hopefully, this work contributes to the design of stable and feasible catalysts for the industrial production of MAA. |
| first_indexed | 2024-03-10T13:04:56Z |
| format | Article |
| id | doaj.art-7ecda0cb11644362b32712f46ffd7fc8 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T13:04:56Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-7ecda0cb11644362b32712f46ffd7fc82023-11-21T11:13:12ZengMDPI AGCatalysts2073-43442021-03-0111339410.3390/catal11030394Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic AcidBaohe Wang0Honggang Dong1Liang Lu2Hongxia Liu3Zhaobang Zhang4Jing Zhu5Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaA series of K<sub>x</sub>H<sub>1.1-x</sub>Cu<sub>0.2</sub>Cs<sub>1</sub>(NH<sub>4</sub>)<sub>1.5</sub>PVMo<sub>11</sub>O<sub>40</sub> (KxCuCsNH<sub>4</sub>PVA) catalysts with different <i>x</i> values were synthesized to catalyze the selective oxidation of methacrolein (MAL) to methacrylic acid (MAA). The effects of potassium (K) ions on both the structure and catalytic activity were studied in detail. The optimum K<sub>0.6</sub>CuCsNH<sub>4</sub>PVA exhibited a large surface area, more acid sites, and abundant active species (V<sup>4+</sup>/VO<sup>2+</sup>) in the secondary structure of the Keggin structure, consequently offering good catalytic performance. Furthermore, K ions increased the MAA selectivity at the expense of carbon monoxide and carbon dioxide (together defined as CO<sub>X</sub>). Additionally, several process parameters for MAL oxidation were evaluated in the processing experiments. The effects of aldehyde impurities (formaldehyde and propanal) on the catalytic performance were investigated. Possible detrimental effects (catalyst poisoning and structural damage) of aldehyde impurities were excluded. A light decrease in MAL conversion could be attributed to the competitive adsorption of aldehyde impurities and MAL on the catalyst. Hopefully, this work contributes to the design of stable and feasible catalysts for the industrial production of MAA.https://www.mdpi.com/2073-4344/11/3/394potassiummethacroleinformaldehydepropanalselective oxidationmethacrylic acid |
| spellingShingle | Baohe Wang Honggang Dong Liang Lu Hongxia Liu Zhaobang Zhang Jing Zhu Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid Catalysts potassium methacrolein formaldehyde propanal selective oxidation methacrylic acid |
| title | Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid |
| title_full | Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid |
| title_fullStr | Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid |
| title_full_unstemmed | Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid |
| title_short | Study on the Development of High-Performance P-Mo-V Catalyst and the Influence of Aldehyde Impurities on Catalytic Performance in Selective Oxidation of Methacrolein to Methacrylic Acid |
| title_sort | study on the development of high performance p mo v catalyst and the influence of aldehyde impurities on catalytic performance in selective oxidation of methacrolein to methacrylic acid |
| topic | potassium methacrolein formaldehyde propanal selective oxidation methacrylic acid |
| url | https://www.mdpi.com/2073-4344/11/3/394 |
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