{"title":"设计有机结构引导剂,以经济高效的方式生产多孔 MSE 沸石","authors":"","doi":"10.1016/j.fuel.2024.133274","DOIUrl":null,"url":null,"abstract":"<div><div>Multipore <strong>MSE</strong> zeolite possesses three-dimensional (3D) pore-network constructed of interconnected 10- and 12- membered rings (MRs), i.e., between its broadly used cousins, medium-pore MFI and large-pore Beta, and has exhibited promising catalytic performances in catalytic cracking reactions. One major bottleneck for the commercial deployment of <strong>MSE</strong> zeolite is the prohibitive production cost due to the use of expensive organic structure directing agent (OSDA). We report here a designed inexpensive OSDA, dispiro[piperidine-1,2′-(1′,2′,3′,5′,6′,7′-hexahydrobenzo [1,2-c: 4, 5-c′] dipyrrolium)-6′,1″-piperidine, that can better stabilize the framework and is specific to the generation of <strong>MSE</strong> in the presence of K<sup>+</sup>. The OSDA is occluded in the supercage and 12-MR straight channel, while the K<sup>+</sup> occupies the 6<sup>2</sup>5<sup>4</sup>4<sup>2</sup> cage, affording high crystallinity and strong acidity. The dealuminated zeolite shows improved light olefin (in particular, propylene) selectivity and catalyst lifetime in catalytic cracking of typical naphtha pool molecule <em>n</em>-heptane. The recipe is a step forward for the specific, low-cost generation of the MSE zeolite and may inspire more investigations on its catalytic applications.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":null,"pages":null},"PeriodicalIF":6.7000,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing organic structure-directing agent for cost-effective production of multipore MSE zeolite\",\"authors\":\"\",\"doi\":\"10.1016/j.fuel.2024.133274\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Multipore <strong>MSE</strong> zeolite possesses three-dimensional (3D) pore-network constructed of interconnected 10- and 12- membered rings (MRs), i.e., between its broadly used cousins, medium-pore MFI and large-pore Beta, and has exhibited promising catalytic performances in catalytic cracking reactions. One major bottleneck for the commercial deployment of <strong>MSE</strong> zeolite is the prohibitive production cost due to the use of expensive organic structure directing agent (OSDA). We report here a designed inexpensive OSDA, dispiro[piperidine-1,2′-(1′,2′,3′,5′,6′,7′-hexahydrobenzo [1,2-c: 4, 5-c′] dipyrrolium)-6′,1″-piperidine, that can better stabilize the framework and is specific to the generation of <strong>MSE</strong> in the presence of K<sup>+</sup>. The OSDA is occluded in the supercage and 12-MR straight channel, while the K<sup>+</sup> occupies the 6<sup>2</sup>5<sup>4</sup>4<sup>2</sup> cage, affording high crystallinity and strong acidity. The dealuminated zeolite shows improved light olefin (in particular, propylene) selectivity and catalyst lifetime in catalytic cracking of typical naphtha pool molecule <em>n</em>-heptane. The recipe is a step forward for the specific, low-cost generation of the MSE zeolite and may inspire more investigations on its catalytic applications.</div></div>\",\"PeriodicalId\":325,\"journal\":{\"name\":\"Fuel\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.7000,\"publicationDate\":\"2024-10-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fuel\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0016236124024232\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0016236124024232","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Designing organic structure-directing agent for cost-effective production of multipore MSE zeolite
Multipore MSE zeolite possesses three-dimensional (3D) pore-network constructed of interconnected 10- and 12- membered rings (MRs), i.e., between its broadly used cousins, medium-pore MFI and large-pore Beta, and has exhibited promising catalytic performances in catalytic cracking reactions. One major bottleneck for the commercial deployment of MSE zeolite is the prohibitive production cost due to the use of expensive organic structure directing agent (OSDA). We report here a designed inexpensive OSDA, dispiro[piperidine-1,2′-(1′,2′,3′,5′,6′,7′-hexahydrobenzo [1,2-c: 4, 5-c′] dipyrrolium)-6′,1″-piperidine, that can better stabilize the framework and is specific to the generation of MSE in the presence of K+. The OSDA is occluded in the supercage and 12-MR straight channel, while the K+ occupies the 625442 cage, affording high crystallinity and strong acidity. The dealuminated zeolite shows improved light olefin (in particular, propylene) selectivity and catalyst lifetime in catalytic cracking of typical naphtha pool molecule n-heptane. The recipe is a step forward for the specific, low-cost generation of the MSE zeolite and may inspire more investigations on its catalytic applications.
期刊介绍:
The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.