Wei Lv , Yao Wang , Hong Chen , Yongqi Tang , Yongdan Li
{"title":"玉米秸秆中的石墨氮在 5-羟甲基糠醛选择性催化氧化中的应用","authors":"Wei Lv , Yao Wang , Hong Chen , Yongqi Tang , Yongdan Li","doi":"10.1016/j.cattod.2024.115113","DOIUrl":null,"url":null,"abstract":"<div><div>Nitrogen atom-doped biomass carbon prepared from corn stover is a newly discovered metal-free catalyst that shows good activity on the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF). Here, the presence of graphitic nitrogen on the catalyst surface activated the oxygen adsorbed on the carbon sites next to the graphitic nitrogen in the carbon material and promoted the formation of oxygen radicals on the surface-active sites, improving the HMF oxidation process. The results show that the catalyst NC-800 reacted with acetonitrile as the reaction solvent at 110 °C and 1.0 MPa O<sub>2</sub> for 8 h to obtain 93.0 % HMF conversion and 94.4 % DFF selectivity, and the 5-HMF conversion and DFF selectivity were maintained at more than 85 % after five cyclic tests, with excellent cyclic stability. One of the main factors influencing the material flaws is the variation in pyrolysis temperature. Using maize stover, a readily available and renewable biomass, in the catalytic oxidation of biomass platform compounds may improve biomass utilization more extensively.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115113"},"PeriodicalIF":5.2000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The application of graphitic nitrogen from corn stover for the selective catalytic oxidation of 5-hydroxymethyl furfural\",\"authors\":\"Wei Lv , Yao Wang , Hong Chen , Yongqi Tang , Yongdan Li\",\"doi\":\"10.1016/j.cattod.2024.115113\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Nitrogen atom-doped biomass carbon prepared from corn stover is a newly discovered metal-free catalyst that shows good activity on the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF). Here, the presence of graphitic nitrogen on the catalyst surface activated the oxygen adsorbed on the carbon sites next to the graphitic nitrogen in the carbon material and promoted the formation of oxygen radicals on the surface-active sites, improving the HMF oxidation process. The results show that the catalyst NC-800 reacted with acetonitrile as the reaction solvent at 110 °C and 1.0 MPa O<sub>2</sub> for 8 h to obtain 93.0 % HMF conversion and 94.4 % DFF selectivity, and the 5-HMF conversion and DFF selectivity were maintained at more than 85 % after five cyclic tests, with excellent cyclic stability. One of the main factors influencing the material flaws is the variation in pyrolysis temperature. Using maize stover, a readily available and renewable biomass, in the catalytic oxidation of biomass platform compounds may improve biomass utilization more extensively.</div></div>\",\"PeriodicalId\":264,\"journal\":{\"name\":\"Catalysis Today\",\"volume\":\"446 \",\"pages\":\"Article 115113\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-10-28\",\"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/S0920586124006072\",\"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/S0920586124006072","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
The application of graphitic nitrogen from corn stover for the selective catalytic oxidation of 5-hydroxymethyl furfural
Nitrogen atom-doped biomass carbon prepared from corn stover is a newly discovered metal-free catalyst that shows good activity on the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF). Here, the presence of graphitic nitrogen on the catalyst surface activated the oxygen adsorbed on the carbon sites next to the graphitic nitrogen in the carbon material and promoted the formation of oxygen radicals on the surface-active sites, improving the HMF oxidation process. The results show that the catalyst NC-800 reacted with acetonitrile as the reaction solvent at 110 °C and 1.0 MPa O2 for 8 h to obtain 93.0 % HMF conversion and 94.4 % DFF selectivity, and the 5-HMF conversion and DFF selectivity were maintained at more than 85 % after five cyclic tests, with excellent cyclic stability. One of the main factors influencing the material flaws is the variation in pyrolysis temperature. Using maize stover, a readily available and renewable biomass, in the catalytic oxidation of biomass platform compounds may improve biomass utilization more extensively.
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.