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Dehydrogenation of ethylbenzene to styrene in the presence of CO 2
Author(s) -
Mimura Naoki,
Saito Masahiro
Publication year - 2000
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/1099-0739(200012)14:12<773::aid-aoc73>3.0.co;2-i
Subject(s) - ethylbenzene , dehydrogenation , styrene , chemistry , catalysis , coprecipitation , distillation , chemical engineering , yield (engineering) , organic chemistry , copolymer , polymer , metallurgy , materials science , engineering
The relationship between the yield of styrene and the energy required for separation by the model distillation system clearly indicates that it is possible to save energy by a new process using CO 2 . An Fe 2 O 3 (10 wt%)–Al 2 O 3 (90 wt%) catalyst prepared by a coprecipitation method was found to be effective for dehydrogenation of ethylbenzene to produce styrene in the presence of CO 2 , instead of the steam used in commercial processes. The dehydrogenation of ethylbenzene over the catalyst in the presence of CO 2 was considered to proceed both via 45% of a one‐step pathway and via 55% of a two‐step pathway. CO 2 was found to suppress the deactivation of the catalyst during the dehydrogenation of ethylbenzene. Copyright © 2000 John Wiley & Sons, Ltd.