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{"title":"使用铂改性 ZSM-5 纳米片催化裂解油酸生成航空煤油","authors":"Haoyu Liu, Jingye Ma, Hong Yuan, Xiang Shi","doi":"10.1002/jctb.7714","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> BACKGROUND</h3>\n \n <p>A series of Pt@NZSM–5 and Pt/NZSM–5 nanosheets having different Si/Al ratios were prepared <i>via</i> an <i>in situ</i> synthesis and impregnation method, respectively, using C<sub>22</sub>H<sub>45</sub>–N<sup>+</sup>(CH<sub>3</sub>)<sub>2</sub>–C<sub>6</sub>H<sub>12</sub>–N<sup>+</sup>(CH<sub>3</sub>)<sub>2</sub>–C<sub>6</sub>H<sub>13</sub> (C<sub>22–6–6</sub>) as the template agent. The oleic acid decarboxylation reaction was carried out using these materials under CO<sub>2</sub> atmosphere and the oleic acid cracking mechanism was inferred from the product distribution of the C8-C17 alkanes.</p>\n </section>\n \n <section>\n \n <h3> RESULTS</h3>\n \n <p>The Pt@NZSM–5 and Pt/NZSM–5 was found to comprise thinner nanosheets and exhibited strong metal–substrate interactions. Pt@NZSM–5 nanosheets with a Si/Al molar ratio of 100 had thicknesses of only 8–9 nm along with a mesopore/micropore capacity ratio of 2.7, an acid content of 11 cm<sup>3</sup>/g STP and a high Pt<sub>0</sub>/PtO<sub>x</sub> ratio.</p>\n </section>\n \n <section>\n \n <h3> CONCLUSION</h3>\n \n <p>The Pt@NZSM-5 and Pt/NZSM-5 nanosheets had an interconnected hierarchical system and a large number of metal active sites that facilitated the decarboxylation of oleic acid. The Pt@NZSM–5 nanosheets demonstrated excellent catalytic activity during the cracking of oleic acid under a CO<sub>2</sub> atmosphere, giving a yield of C8–C17 alkanes as high as 83.8% after 5 h at 320 °C. These Pt@NZSM–5 nanosheets also showed greater stability than the Pt/NZSM–5 specimens. © 2024 Society of Chemical Industry (SCI).</p>\n </section>\n </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Catalytic cracking of oleic acid to generate aviation kerosene using platinum–modified ZSM–5 nanosheets\",\"authors\":\"Haoyu Liu, Jingye Ma, Hong Yuan, Xiang Shi\",\"doi\":\"10.1002/jctb.7714\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> BACKGROUND</h3>\\n \\n <p>A series of Pt@NZSM–5 and Pt/NZSM–5 nanosheets having different Si/Al ratios were prepared <i>via</i> an <i>in situ</i> synthesis and impregnation method, respectively, using C<sub>22</sub>H<sub>45</sub>–N<sup>+</sup>(CH<sub>3</sub>)<sub>2</sub>–C<sub>6</sub>H<sub>12</sub>–N<sup>+</sup>(CH<sub>3</sub>)<sub>2</sub>–C<sub>6</sub>H<sub>13</sub> (C<sub>22–6–6</sub>) as the template agent. The oleic acid decarboxylation reaction was carried out using these materials under CO<sub>2</sub> atmosphere and the oleic acid cracking mechanism was inferred from the product distribution of the C8-C17 alkanes.</p>\\n </section>\\n \\n <section>\\n \\n <h3> RESULTS</h3>\\n \\n <p>The Pt@NZSM–5 and Pt/NZSM–5 was found to comprise thinner nanosheets and exhibited strong metal–substrate interactions. Pt@NZSM–5 nanosheets with a Si/Al molar ratio of 100 had thicknesses of only 8–9 nm along with a mesopore/micropore capacity ratio of 2.7, an acid content of 11 cm<sup>3</sup>/g STP and a high Pt<sub>0</sub>/PtO<sub>x</sub> ratio.</p>\\n </section>\\n \\n <section>\\n \\n <h3> CONCLUSION</h3>\\n \\n <p>The Pt@NZSM-5 and Pt/NZSM-5 nanosheets had an interconnected hierarchical system and a large number of metal active sites that facilitated the decarboxylation of oleic acid. The Pt@NZSM–5 nanosheets demonstrated excellent catalytic activity during the cracking of oleic acid under a CO<sub>2</sub> atmosphere, giving a yield of C8–C17 alkanes as high as 83.8% after 5 h at 320 °C. These Pt@NZSM–5 nanosheets also showed greater stability than the Pt/NZSM–5 specimens. © 2024 Society of Chemical Industry (SCI).</p>\\n </section>\\n </div>\",\"PeriodicalId\":15335,\"journal\":{\"name\":\"Journal of chemical technology and biotechnology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-07-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of chemical technology and biotechnology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jctb.7714\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of chemical technology and biotechnology","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jctb.7714","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
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