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Production of anhydrous 1,4‐dioxane from ethylene oxide in the presence of amberlyst 15
Author(s) -
Yamanis John,
Garland Ronald W.
Publication year - 1981
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450590308
Subject(s) - chemistry , anhydrous , ethylene oxide , decomposition , solvent , exothermic reaction , oxide , organic chemistry , ethylene , yield (engineering) , activation energy , limiting , sulfonic acid , polymer chemistry , catalysis , materials science , polymer , metallurgy , mechanical engineering , engineering , copolymer
Abstract The fast and exothermic reaction of ethylene oxide with the sulfonic acid groups of Amberlyst 15 (H + ), suspended in an inert solvent, leads to the formation of polymeric ester species whose length aproaches a limiting value. The ester chains decompose to form cyclic ethers and this decomposition can be made selective for 1,4‐dioxane in a two‐step process by first esterifying the resin and then depolymerizing the esters. The resin can be used repeatedly with substantial capacity loss, but this loss can be removed by regeneration. 1,4‐Dioxnne formatios from the esters was fousd to be described by the phenomenological model.\documentclass[article]\pagestyle[empty]\begin[document]$$\[dN_D/dt = k\quad\sum\limits_{i = 1}^\infty{\alpha _i N_i}\]$$\end[document]with an apparent activation energy of 25.8 kcal/mol.