In situ 13c NMR study of "conjunct polymerization" of i-pentene in 95% sulfuric acid

V.B. Kazansky, R.A. Santen, van

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Abstract

13C NMR study of \"conjunct polymn.\" of 1-pentene in 95% sulfuric acid demonstrated that this is a carbenium ion reaction, where the esters are the precursors of carbenium ions. In the first step of the reaction a complicated mixt. of primary and secondary mono- and dipentyl esters is formed. In an excess of the acid the esters are decompd. yielding aliph. carbenium ions, which are then involved in secondary reactions resulting in the final products. Similar to heterogeneous catalysis on zeolites, the steady state concn. of the aliph. carbenium ions during the reaction is, however, too low for their direct detection by NMR
Original languageEnglish
Pages (from-to)115-121
JournalCatalysis Letters
Volume38
Issue number1-2
DOIs
Publication statusPublished - 1996

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