{"title":"调整 MgxAlOy-SiO2 上的酸性和碱性特征对乙醇升级为 1,3-丁二烯的影响","authors":"","doi":"10.1016/j.cattod.2024.115017","DOIUrl":null,"url":null,"abstract":"<div><p>Ethanol has captured a lot of interest from the industry in recent years due to its sustainable appeal, being obtained through the process of biomass fermentation. Not only its application in the energy sector as a potent fuel, but its conversion to higher added value products has been a commercial highlight. In this work, we sought to synthesize a new mixed catalyst Mg<sub>x</sub>AlO<sub>y</sub>-SiO<sub>2</sub> to investigate its performance in the upgrading of ethanol to a product of significant relevance, particularly for the plastics and polymers industry, namely1,3-butadiene. The molar ratio of Mg:Al:Si in the catalyst was tuned, revealing a remarkable impact on the selectivity of the reaction products. For the production of 1,3-butadiene, the optimal catalyst composition was determined to be 3:1:1, exhibiting a selectivity of 23 % at 723 K. This composition offered a favorable amount of acid and basic active sites, indicated by the acid to basic sites density ratio of 0.109, with medium basic sites predominantly represented. This arrangement is believed to have facilitated dehydrogenation, condensation, and dehydration reactions, each playing a crucial role in the overall process.</p></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":null,"pages":null},"PeriodicalIF":5.2000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Tuning acid and basic features on MgxAlOy-SiO2 impacted ethanol upgrading to 1,3-butadiene\",\"authors\":\"\",\"doi\":\"10.1016/j.cattod.2024.115017\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ethanol has captured a lot of interest from the industry in recent years due to its sustainable appeal, being obtained through the process of biomass fermentation. Not only its application in the energy sector as a potent fuel, but its conversion to higher added value products has been a commercial highlight. In this work, we sought to synthesize a new mixed catalyst Mg<sub>x</sub>AlO<sub>y</sub>-SiO<sub>2</sub> to investigate its performance in the upgrading of ethanol to a product of significant relevance, particularly for the plastics and polymers industry, namely1,3-butadiene. The molar ratio of Mg:Al:Si in the catalyst was tuned, revealing a remarkable impact on the selectivity of the reaction products. For the production of 1,3-butadiene, the optimal catalyst composition was determined to be 3:1:1, exhibiting a selectivity of 23 % at 723 K. This composition offered a favorable amount of acid and basic active sites, indicated by the acid to basic sites density ratio of 0.109, with medium basic sites predominantly represented. This arrangement is believed to have facilitated dehydrogenation, condensation, and dehydration reactions, each playing a crucial role in the overall process.</p></div>\",\"PeriodicalId\":264,\"journal\":{\"name\":\"Catalysis Today\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Today\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S092058612400511X\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Today","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S092058612400511X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Tuning acid and basic features on MgxAlOy-SiO2 impacted ethanol upgrading to 1,3-butadiene
Ethanol has captured a lot of interest from the industry in recent years due to its sustainable appeal, being obtained through the process of biomass fermentation. Not only its application in the energy sector as a potent fuel, but its conversion to higher added value products has been a commercial highlight. In this work, we sought to synthesize a new mixed catalyst MgxAlOy-SiO2 to investigate its performance in the upgrading of ethanol to a product of significant relevance, particularly for the plastics and polymers industry, namely1,3-butadiene. The molar ratio of Mg:Al:Si in the catalyst was tuned, revealing a remarkable impact on the selectivity of the reaction products. For the production of 1,3-butadiene, the optimal catalyst composition was determined to be 3:1:1, exhibiting a selectivity of 23 % at 723 K. This composition offered a favorable amount of acid and basic active sites, indicated by the acid to basic sites density ratio of 0.109, with medium basic sites predominantly represented. This arrangement is believed to have facilitated dehydrogenation, condensation, and dehydration reactions, each playing a crucial role in the overall process.
期刊介绍:
Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues.
Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.