{"title":"二氧化钛促进威尔斯-道森型杂多酸的醇脱水作用","authors":"","doi":"10.1016/j.apcata.2024.119947","DOIUrl":null,"url":null,"abstract":"<div><p>The catalytic dehydrations of methanol and n-butanol on strongly acidic solids have been tested in two types of microreactors in the gas phase between 80 – 240 ºC. For the methanol transformation to dimethyl ether, the conversion was evaluated <em>in situ</em> with an innovative use of the FTIR spectroscopy in batch microreactor. The same catalysts were used for the conversion of n-butanol to butenes and n-butyl-ether under similar conditions, determined using a flow microreactor with the conventional gas chromatography downstream analysis. The catalysts included the Wells-Dawson type heteropolyacids, H<sub>6</sub>P<sub>2</sub>W<sub>18</sub>O<sub>62</sub> and H<sub>6</sub>P<sub>2</sub>Mo<sub>18</sub>O<sub>62</sub>, supported on TiO<sub>2</sub> and/or BN. The activity orders obtained in those methods were compared to that obtained by the ammonia sorption using the gas-flow through microcalorimeter at 150 ºC. The significant effect of TiO<sub>2</sub> and BN supports in the methanol and butanol dehydrations makes the TiO<sub>2</sub> and BN-supported Well-Dawson type heteropolyacids potentially relevant for industrial transformations of biomass derived feedstock.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"TiO2 promoted alcohol dehydrations on the Wells-Dawson type heteropolyacids\",\"authors\":\"\",\"doi\":\"10.1016/j.apcata.2024.119947\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The catalytic dehydrations of methanol and n-butanol on strongly acidic solids have been tested in two types of microreactors in the gas phase between 80 – 240 ºC. For the methanol transformation to dimethyl ether, the conversion was evaluated <em>in situ</em> with an innovative use of the FTIR spectroscopy in batch microreactor. The same catalysts were used for the conversion of n-butanol to butenes and n-butyl-ether under similar conditions, determined using a flow microreactor with the conventional gas chromatography downstream analysis. The catalysts included the Wells-Dawson type heteropolyacids, H<sub>6</sub>P<sub>2</sub>W<sub>18</sub>O<sub>62</sub> and H<sub>6</sub>P<sub>2</sub>Mo<sub>18</sub>O<sub>62</sub>, supported on TiO<sub>2</sub> and/or BN. The activity orders obtained in those methods were compared to that obtained by the ammonia sorption using the gas-flow through microcalorimeter at 150 ºC. The significant effect of TiO<sub>2</sub> and BN supports in the methanol and butanol dehydrations makes the TiO<sub>2</sub> and BN-supported Well-Dawson type heteropolyacids potentially relevant for industrial transformations of biomass derived feedstock.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24003922\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24003922","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
TiO2 promoted alcohol dehydrations on the Wells-Dawson type heteropolyacids
The catalytic dehydrations of methanol and n-butanol on strongly acidic solids have been tested in two types of microreactors in the gas phase between 80 – 240 ºC. For the methanol transformation to dimethyl ether, the conversion was evaluated in situ with an innovative use of the FTIR spectroscopy in batch microreactor. The same catalysts were used for the conversion of n-butanol to butenes and n-butyl-ether under similar conditions, determined using a flow microreactor with the conventional gas chromatography downstream analysis. The catalysts included the Wells-Dawson type heteropolyacids, H6P2W18O62 and H6P2Mo18O62, supported on TiO2 and/or BN. The activity orders obtained in those methods were compared to that obtained by the ammonia sorption using the gas-flow through microcalorimeter at 150 ºC. The significant effect of TiO2 and BN supports in the methanol and butanol dehydrations makes the TiO2 and BN-supported Well-Dawson type heteropolyacids potentially relevant for industrial transformations of biomass derived feedstock.
期刊介绍：
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
