<b>Cumene cracking on modified mesoporous material type MCM-41</b>
The effect of ionic exchange degree of aluminated mesoporous materials H(X)-AlMCM-41 materials, the method of its exchange mode and its grains form were investigated for the mesoporous catalytic activity in the cumene (i.e. isopropylbenzene) cracking reaction. Benzene, propylene and xylene derivativ...
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Chemical Society of Ethiopia
2006-06-01
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doaj-5408b4d7ab244d93a47b09577a762df62020-11-24T22:38:33ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2006-06-012018997<b>Cumene cracking on modified mesoporous material type MCM-41</b>Ahmed BelhakemAbdelkader BengueddachThe effect of ionic exchange degree of aluminated mesoporous materials H(X)-AlMCM-41 materials, the method of its exchange mode and its grains form were investigated for the mesoporous catalytic activity in the cumene (i.e. isopropylbenzene) cracking reaction. Benzene, propylene and xylene derivatives are the main products of this reaction. Olefins like butene and pentene appeared as the products of secondary reactions. No saturated hydrocarbons, except traces of butane, nor ethylbenzene and toluene were formed and seemed to be typical products of secondary reactions obtained with HNaY zeolites. Generally the exchanged H(X)-AlMCM-41 materials by the substitution of Na<sup>+</sup> by NH<sub>4</sub><sup>+</sup> are more active than those exchanged directly with acid solution (substitution of Na<sup>+</sup> by H<sup>+</sup>) even if both the two methods used exhibit a comparable content of acid sites within catalysts at a low exchange degrees. However, the first method of exchange has exhibited an important acidity for mesoporous materials when the ionic exchange degree was increased up to 90%; it was probably due not only to the percentage of exchanged degree but also to the distribution of acid sites within the materials.http://www.ajol.info/index.php/bcse/article/view/21148MCM-41 mesoporousGrains formsCumene cracking |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ahmed Belhakem Abdelkader Bengueddach |
spellingShingle |
Ahmed Belhakem Abdelkader Bengueddach <b>Cumene cracking on modified mesoporous material type MCM-41</b> Bulletin of the Chemical Society of Ethiopia MCM-41 mesoporous Grains forms Cumene cracking |
author_facet |
Ahmed Belhakem Abdelkader Bengueddach |
author_sort |
Ahmed Belhakem |
title |
<b>Cumene cracking on modified mesoporous material type MCM-41</b> |
title_short |
<b>Cumene cracking on modified mesoporous material type MCM-41</b> |
title_full |
<b>Cumene cracking on modified mesoporous material type MCM-41</b> |
title_fullStr |
<b>Cumene cracking on modified mesoporous material type MCM-41</b> |
title_full_unstemmed |
<b>Cumene cracking on modified mesoporous material type MCM-41</b> |
title_sort |
<b>cumene cracking on modified mesoporous material type mcm-41</b> |
publisher |
Chemical Society of Ethiopia |
series |
Bulletin of the Chemical Society of Ethiopia |
issn |
1011-3924 1726-801X |
publishDate |
2006-06-01 |
description |
The effect of ionic exchange degree of aluminated mesoporous materials H(X)-AlMCM-41 materials, the method of its exchange mode and its grains form were investigated for the mesoporous catalytic activity in the cumene (i.e. isopropylbenzene) cracking reaction. Benzene, propylene and xylene derivatives are the main products of this reaction. Olefins like butene and pentene appeared as the products of secondary reactions. No saturated hydrocarbons, except traces of butane, nor ethylbenzene and toluene were formed and seemed to be typical products of secondary reactions obtained with HNaY zeolites. Generally the exchanged H(X)-AlMCM-41 materials by the substitution of Na<sup>+</sup> by NH<sub>4</sub><sup>+</sup> are more active than those exchanged directly with acid solution (substitution of Na<sup>+</sup> by H<sup>+</sup>) even if both the two methods used exhibit a comparable content of acid sites within catalysts at a low exchange degrees. However, the first method of exchange has exhibited an important acidity for mesoporous materials when the ionic exchange degree was increased up to 90%; it was probably due not only to the percentage of exchanged degree but also to the distribution of acid sites within the materials. |
topic |
MCM-41 mesoporous Grains forms Cumene cracking |
url |
http://www.ajol.info/index.php/bcse/article/view/21148 |
work_keys_str_mv |
AT ahmedbelhakem bcumenecrackingonmodifiedmesoporousmaterialtypemcm41b AT abdelkaderbengueddach bcumenecrackingonmodifiedmesoporousmaterialtypemcm41b |
_version_ |
1725713184869842944 |