{"title":"UiO-66-NH2 （Ti/Zr）的合成及其催化纤维素制5-羟甲基糠醛的研究","authors":"Lingling Xu, Xiaomei Pan, Lijing Gao, Ruiping Wei, Jihang Li, Xiu Wen, Yuanzhuang Li, Guomin Xiao","doi":"10.1007/s10562-024-04851-3","DOIUrl":null,"url":null,"abstract":"<div><p>UiO–66–NH<sub>2</sub>(Ti/Zr) modified by Ti metal oxide (TiO<sub>2</sub>) was used to catalyze the hydrolysis of cellulose to prepare 5-HMF. Under the optimal reaction conditions of H<sub>2</sub>O(NaCl)/THF(1/4 mL), 190 °C, 2 h and 50 mg UNT-3(Ti/Zr) (TiO<sub>2</sub> and UiO–66–NH<sub>2</sub> with mass of 1.5 and 0.1 g, respectively), the yield of 5-hydroxymethylfurfural reached 59.88%. UiO–66–NH<sub>2</sub>(Ti/Zr) nanocomposites with different mass ratios were successfully prepared by simple solvent evaporation method. SEM and TEM have shown that the modified UiO–66–NH<sub>2</sub>(Ti/Zr) are wrapped into sphere by TiO<sub>2</sub> densely attached to the surface of UiO–66–NH<sub>2</sub>, which provides favorable conditions for the uniform dispersion of TiO<sub>2</sub> and coordination of the Lewis acidic site of UiO–66–NH<sub>2</sub>. NH<sub>3</sub>–TPD results confirmed the existence of super-strong, strong, middle and weak acid sites in UiO–66–NH<sub>2</sub>(Ti/Zr), and Py-FTIR confirmed the existence of Brønsted and Lewis acids. After four cycles, the yield of 5-HMF and FUR decreased slightly from 59.88 to 51.89% and 9.11 to 7.66%, respectively, and the yield of 5-HMF could still remain above 50%. The results showed that the modified composite treatment of TiO<sub>2</sub> with rich Lewis acid/base and UiO–66–NH<sub>2</sub> could provide a certain idea for the extensive application of biomass research in the future.</p><h3>Graphic Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of UiO–66–NH2(Ti/Zr) and its Catalytic Conversion of Cellulose to 5-HMF\",\"authors\":\"Lingling Xu, Xiaomei Pan, Lijing Gao, Ruiping Wei, Jihang Li, Xiu Wen, Yuanzhuang Li, Guomin Xiao\",\"doi\":\"10.1007/s10562-024-04851-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>UiO–66–NH<sub>2</sub>(Ti/Zr) modified by Ti metal oxide (TiO<sub>2</sub>) was used to catalyze the hydrolysis of cellulose to prepare 5-HMF. Under the optimal reaction conditions of H<sub>2</sub>O(NaCl)/THF(1/4 mL), 190 °C, 2 h and 50 mg UNT-3(Ti/Zr) (TiO<sub>2</sub> and UiO–66–NH<sub>2</sub> with mass of 1.5 and 0.1 g, respectively), the yield of 5-hydroxymethylfurfural reached 59.88%. UiO–66–NH<sub>2</sub>(Ti/Zr) nanocomposites with different mass ratios were successfully prepared by simple solvent evaporation method. SEM and TEM have shown that the modified UiO–66–NH<sub>2</sub>(Ti/Zr) are wrapped into sphere by TiO<sub>2</sub> densely attached to the surface of UiO–66–NH<sub>2</sub>, which provides favorable conditions for the uniform dispersion of TiO<sub>2</sub> and coordination of the Lewis acidic site of UiO–66–NH<sub>2</sub>. NH<sub>3</sub>–TPD results confirmed the existence of super-strong, strong, middle and weak acid sites in UiO–66–NH<sub>2</sub>(Ti/Zr), and Py-FTIR confirmed the existence of Brønsted and Lewis acids. After four cycles, the yield of 5-HMF and FUR decreased slightly from 59.88 to 51.89% and 9.11 to 7.66%, respectively, and the yield of 5-HMF could still remain above 50%. The results showed that the modified composite treatment of TiO<sub>2</sub> with rich Lewis acid/base and UiO–66–NH<sub>2</sub> could provide a certain idea for the extensive application of biomass research in the future.</p><h3>Graphic Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":\"155 2\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-01-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-024-04851-3\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04851-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Synthesis of UiO–66–NH2(Ti/Zr) and its Catalytic Conversion of Cellulose to 5-HMF
UiO–66–NH2(Ti/Zr) modified by Ti metal oxide (TiO2) was used to catalyze the hydrolysis of cellulose to prepare 5-HMF. Under the optimal reaction conditions of H2O(NaCl)/THF(1/4 mL), 190 °C, 2 h and 50 mg UNT-3(Ti/Zr) (TiO2 and UiO–66–NH2 with mass of 1.5 and 0.1 g, respectively), the yield of 5-hydroxymethylfurfural reached 59.88%. UiO–66–NH2(Ti/Zr) nanocomposites with different mass ratios were successfully prepared by simple solvent evaporation method. SEM and TEM have shown that the modified UiO–66–NH2(Ti/Zr) are wrapped into sphere by TiO2 densely attached to the surface of UiO–66–NH2, which provides favorable conditions for the uniform dispersion of TiO2 and coordination of the Lewis acidic site of UiO–66–NH2. NH3–TPD results confirmed the existence of super-strong, strong, middle and weak acid sites in UiO–66–NH2(Ti/Zr), and Py-FTIR confirmed the existence of Brønsted and Lewis acids. After four cycles, the yield of 5-HMF and FUR decreased slightly from 59.88 to 51.89% and 9.11 to 7.66%, respectively, and the yield of 5-HMF could still remain above 50%. The results showed that the modified composite treatment of TiO2 with rich Lewis acid/base and UiO–66–NH2 could provide a certain idea for the extensive application of biomass research in the future.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
