{"title":"The Mechanism of Formation of Trimethylpentanes from Esters in Liquid-Phase Alkylation of Isobutane with Butenes","authors":"E. A. Katsman","doi":"10.1134/S0023158425600798","DOIUrl":null,"url":null,"abstract":"<p>The formation sequence of trimethylpentane (TMP) isomers in the liquid-phase interaction of butyl triflates and butenes with isobutane was studied. In the composition of alkylation products, the fractions of TMP isomers increased in the order 2,2,4-TMP > 2,3,4-TMP > 2,3,3-TMP <span>\\( \\gg \\)</span> 2,2,3-TMP upon homogeneous interaction in isobutane or in the order 2,3,4-TMP > 2,3,3-TMP > 2,2,4-TMP <span>\\( \\gg \\)</span> 2,2,3-TMP in the isobutane–triflic acid two-phase system. The isomeric composition approached the composition of a usual commercial product with increasing reaction time mainly owing to the isomerization of 2,3,4-TMP and 2,3,3-TMP isomers into a 2,2,4-TMP isomer. The possible mechanisms of formation of primary reaction products were discussed. These products are 2,2,4-TMP and 2,2,3-TMP in the case of butenes and 2,3,4-TMP and 2,3,3-TMP in the case of butyl triflates.</p>","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"66 4","pages":"456 - 462"},"PeriodicalIF":1.0000,"publicationDate":"2025-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kinetics and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0023158425600798","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The formation sequence of trimethylpentane (TMP) isomers in the liquid-phase interaction of butyl triflates and butenes with isobutane was studied. In the composition of alkylation products, the fractions of TMP isomers increased in the order 2,2,4-TMP > 2,3,4-TMP > 2,3,3-TMP \( \gg \) 2,2,3-TMP upon homogeneous interaction in isobutane or in the order 2,3,4-TMP > 2,3,3-TMP > 2,2,4-TMP \( \gg \) 2,2,3-TMP in the isobutane–triflic acid two-phase system. The isomeric composition approached the composition of a usual commercial product with increasing reaction time mainly owing to the isomerization of 2,3,4-TMP and 2,3,3-TMP isomers into a 2,2,4-TMP isomer. The possible mechanisms of formation of primary reaction products were discussed. These products are 2,2,4-TMP and 2,2,3-TMP in the case of butenes and 2,3,4-TMP and 2,3,3-TMP in the case of butyl triflates.
期刊介绍：
Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.
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