{"title":"一锅合成介孔Ti-SBA-15催化剂制备分离Ti4+位点用于二苯并噻吩的高效氧化脱硫","authors":"Adisak Guntida , Françoise Maugé , Cassandre Kouvatas , Luis-Jacobo Aguilera , Oleg I. Lebedev , Piyasan Praserthdam , Supareak Praserthdam , Karine Thomas","doi":"10.1016/j.mtsust.2025.101204","DOIUrl":null,"url":null,"abstract":"<div><div>Ti-incorporated SBA-15 catalysts were synthesized via a one-pot hydrothermal method and tested in the liquid-phase oxidative desulfurization (ODS) process at 80 °C and atmospheric pressure for low-sulfur fuel production. These catalysts exhibited superior ODS performance compared to conventional impregnation-based catalysts. Characterization confirmed the successful incorporation of titanium ions into the SBA-15 framework, forming Si–O–Ti bonds with tetrahedrally coordinated Ti<sup>4+</sup> species. Two types of Ti<sup>4+</sup> sites—crystalline and isolated—were identified, with the isolated sites contributing more significantly to catalytic activity. The high accessibility of dibenzothiophene (DBT) to isolated Ti<sup>4+</sup> sites, along with the minimal presence of crystalline TiO<sub>2</sub> phases, were key factors in the enhanced performance. Quantitative analysis showed that isolated Ti<sup>4+</sup> sites exhibited a turnover frequency (TOF) approximately 20 times higher than that of crystalline Ti<sup>4+</sup> sites, confirming their role as the primary active sites in the ODS reaction.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101204"},"PeriodicalIF":7.9000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Generation of isolated Ti4+ sites via one-pot synthesis of mesoporous Ti-SBA-15 catalysts for high-performance oxidative desulfurization of dibenzothiophene\",\"authors\":\"Adisak Guntida , Françoise Maugé , Cassandre Kouvatas , Luis-Jacobo Aguilera , Oleg I. Lebedev , Piyasan Praserthdam , Supareak Praserthdam , Karine Thomas\",\"doi\":\"10.1016/j.mtsust.2025.101204\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Ti-incorporated SBA-15 catalysts were synthesized via a one-pot hydrothermal method and tested in the liquid-phase oxidative desulfurization (ODS) process at 80 °C and atmospheric pressure for low-sulfur fuel production. These catalysts exhibited superior ODS performance compared to conventional impregnation-based catalysts. Characterization confirmed the successful incorporation of titanium ions into the SBA-15 framework, forming Si–O–Ti bonds with tetrahedrally coordinated Ti<sup>4+</sup> species. Two types of Ti<sup>4+</sup> sites—crystalline and isolated—were identified, with the isolated sites contributing more significantly to catalytic activity. The high accessibility of dibenzothiophene (DBT) to isolated Ti<sup>4+</sup> sites, along with the minimal presence of crystalline TiO<sub>2</sub> phases, were key factors in the enhanced performance. Quantitative analysis showed that isolated Ti<sup>4+</sup> sites exhibited a turnover frequency (TOF) approximately 20 times higher than that of crystalline Ti<sup>4+</sup> sites, confirming their role as the primary active sites in the ODS reaction.</div></div>\",\"PeriodicalId\":18322,\"journal\":{\"name\":\"Materials Today Sustainability\",\"volume\":\"31 \",\"pages\":\"Article 101204\"},\"PeriodicalIF\":7.9000,\"publicationDate\":\"2025-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today Sustainability\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589234725001332\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Today Sustainability","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589234725001332","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Generation of isolated Ti4+ sites via one-pot synthesis of mesoporous Ti-SBA-15 catalysts for high-performance oxidative desulfurization of dibenzothiophene
Ti-incorporated SBA-15 catalysts were synthesized via a one-pot hydrothermal method and tested in the liquid-phase oxidative desulfurization (ODS) process at 80 °C and atmospheric pressure for low-sulfur fuel production. These catalysts exhibited superior ODS performance compared to conventional impregnation-based catalysts. Characterization confirmed the successful incorporation of titanium ions into the SBA-15 framework, forming Si–O–Ti bonds with tetrahedrally coordinated Ti4+ species. Two types of Ti4+ sites—crystalline and isolated—were identified, with the isolated sites contributing more significantly to catalytic activity. The high accessibility of dibenzothiophene (DBT) to isolated Ti4+ sites, along with the minimal presence of crystalline TiO2 phases, were key factors in the enhanced performance. Quantitative analysis showed that isolated Ti4+ sites exhibited a turnover frequency (TOF) approximately 20 times higher than that of crystalline Ti4+ sites, confirming their role as the primary active sites in the ODS reaction.
期刊介绍:
Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science.
With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.