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  • Ring substituted aromatic aldehydes are important compounds with high added value. 4 Methoxybenzaldehyde is an example of such compounds. A classical way of 4 Methoxybenzaldehyde production is based on anodic methoxylation of 4 Methylanisole (4 MA) and subsequent acidic hydrolysis of 4-Methoxybenzaldehyde dimethylacetal separated from worked electrolyte. Intermediate product in the process is 4 Methoxybenzylmethyl ether (4 MBME). In the current contribution the influence of supporting electrolyte anion on kinetics and mechanism of the methoxylation reaction together with theirs impact on the reaction selectivity is discussed. Methanol electrolytes containing three different supporting electrolyte anions (F-, ClO4-, bis(trifluoromethansulfonate)imide) were studied. Classical electrochemical techniques such as linear voltammetry on stationary and rotating disc electrode were utilized in uncovering of reaction kinetics and mechanism. Gas chromatography with Flame Ionization Detector enabled to follow c
  • Ring substituted aromatic aldehydes are important compounds with high added value. 4 Methoxybenzaldehyde is an example of such compounds. A classical way of 4 Methoxybenzaldehyde production is based on anodic methoxylation of 4 Methylanisole (4 MA) and subsequent acidic hydrolysis of 4-Methoxybenzaldehyde dimethylacetal separated from worked electrolyte. Intermediate product in the process is 4 Methoxybenzylmethyl ether (4 MBME). In the current contribution the influence of supporting electrolyte anion on kinetics and mechanism of the methoxylation reaction together with theirs impact on the reaction selectivity is discussed. Methanol electrolytes containing three different supporting electrolyte anions (F-, ClO4-, bis(trifluoromethansulfonate)imide) were studied. Classical electrochemical techniques such as linear voltammetry on stationary and rotating disc electrode were utilized in uncovering of reaction kinetics and mechanism. Gas chromatography with Flame Ionization Detector enabled to follow c (en)
  • Výroba aromatických aldehydů ze substituovaných toluenů představuje důležitý proces. Překážkou uplatnění klasických chemických postupů je jejich nízká selektivita a malý časoprostorový výtěžek. Proto se tento typ látek vyrábí elektrochemickou oxidací již zmíněných toluenů v přítomnosti alkoholu. Výsledný acetal je po odseparování z reakční směsi kysele hydrolyzován a poskytuje aldehyd. V této práci byl studován vliv aniontu základního elektrolytu na kinetiku a mechanismus methoxylační reakce. Pomocí klasických elektrochemických technik byla studována methoxylačná reakce v methanolových roztocích F-, ClO4- a bis(trifluoromethansulfonát)imidu. Z těchto měření byla stanovena elektrodová kinetika a selektivita reakce. F- se na rozdíl od ostatních studovaných aniontů přímo účastní probíhajících elektrodových reakcí. (cs)
Title
  • The role of supporting electrolyte anion in the electrochemical methoxylation of 4-methylanisole
  • The role of supporting electrolyte anion in the electrochemical methoxylation of 4-methylanisole (en)
  • Úloha aniontu v základních elektrolytech při elektrochemické methoxylaci 4-methylanisolu (cs)
skos:prefLabel
  • The role of supporting electrolyte anion in the electrochemical methoxylation of 4-methylanisole
  • The role of supporting electrolyte anion in the electrochemical methoxylation of 4-methylanisole (en)
  • Úloha aniontu v základních elektrolytech při elektrochemické methoxylaci 4-methylanisolu (cs)
skos:notation
  • RIV/60461373:22310/08:00020420!RIV09-MSM-22310___
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  • 393222
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  • RIV/60461373:22310/08:00020420
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  • 4-methylanisole; anodic methoxylation; electrode kinetics (en)
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  • [777DFAB1DFE2]
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  • Praha
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  • Praha
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  • Proceedings of 8th European Symposium on Electrochemical Engineering
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  • Bouzek, Karel
  • Bystroň, Tomáš
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number of pages
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  • Ing. Jan Novosad, Procesní inženýrství
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  • 978-80-02-02053-0
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  • 22310
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