{"title":"在金属/ZSM-5 上制造酸碱位点的溶解策略,用于将高含水量甲醇脱水为二甲醚","authors":"","doi":"10.1016/j.renene.2024.121000","DOIUrl":null,"url":null,"abstract":"<div><p>In the process of modified basic NaZSM-5 precursor by its impregnating in M(NO<sub>3</sub>)<sub>n</sub> (M = Al, Cu, Fe, Co, Ni, Cr, Mn, Zn) or SnCl<sub>4</sub> acidic aqueous solutions, we shed light on the solvation effect of M<sup>x</sup><sup>+</sup> cations on surface acid-base strength, and further on enhanced catalytic reactivity. The obtained results indicated that M(Sn, Fe, Cr)/NaZSM-5 prepared with pK<sub>a</sub> values of the metal salts <4 present high catalytic reactivity due to their stronger solvation prone to produce acid-base site balance on the surface. To further understand the influence of solvation, the catalytic performance of Sn/NaZSM-5 for methanol, particularly the water-containing methanol dehydration was examined, achieving high conversion and selectivity for high-water-content methanol dehydration. Meanwhile, the catalytic stability test of the catalyst was carried out and above 1000 h run lifetime was actualized without the catalyst surface composition and structure changed.</p></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":null,"pages":null},"PeriodicalIF":9.0000,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A solvation strategy for fabricating acid-base sites on metals/ZSM-5 towards dehydration of high-water-content methanol to dimethyl ether\",\"authors\":\"\",\"doi\":\"10.1016/j.renene.2024.121000\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In the process of modified basic NaZSM-5 precursor by its impregnating in M(NO<sub>3</sub>)<sub>n</sub> (M = Al, Cu, Fe, Co, Ni, Cr, Mn, Zn) or SnCl<sub>4</sub> acidic aqueous solutions, we shed light on the solvation effect of M<sup>x</sup><sup>+</sup> cations on surface acid-base strength, and further on enhanced catalytic reactivity. The obtained results indicated that M(Sn, Fe, Cr)/NaZSM-5 prepared with pK<sub>a</sub> values of the metal salts <4 present high catalytic reactivity due to their stronger solvation prone to produce acid-base site balance on the surface. To further understand the influence of solvation, the catalytic performance of Sn/NaZSM-5 for methanol, particularly the water-containing methanol dehydration was examined, achieving high conversion and selectivity for high-water-content methanol dehydration. Meanwhile, the catalytic stability test of the catalyst was carried out and above 1000 h run lifetime was actualized without the catalyst surface composition and structure changed.</p></div>\",\"PeriodicalId\":419,\"journal\":{\"name\":\"Renewable Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2024-07-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Renewable Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0960148124010681\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Renewable Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0960148124010681","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
A solvation strategy for fabricating acid-base sites on metals/ZSM-5 towards dehydration of high-water-content methanol to dimethyl ether
In the process of modified basic NaZSM-5 precursor by its impregnating in M(NO3)n (M = Al, Cu, Fe, Co, Ni, Cr, Mn, Zn) or SnCl4 acidic aqueous solutions, we shed light on the solvation effect of Mx+ cations on surface acid-base strength, and further on enhanced catalytic reactivity. The obtained results indicated that M(Sn, Fe, Cr)/NaZSM-5 prepared with pKa values of the metal salts <4 present high catalytic reactivity due to their stronger solvation prone to produce acid-base site balance on the surface. To further understand the influence of solvation, the catalytic performance of Sn/NaZSM-5 for methanol, particularly the water-containing methanol dehydration was examined, achieving high conversion and selectivity for high-water-content methanol dehydration. Meanwhile, the catalytic stability test of the catalyst was carried out and above 1000 h run lifetime was actualized without the catalyst surface composition and structure changed.
期刊介绍:
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