Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction

The dispersion of supported Pt and PtIr reforming catalysts have been studied, after treatment with oxidative and reducing atmosphere. Methylcyclohexane dehydrogenation reaction in the absence of hydrogen was used as a test reaction. An attempt was made to relate the behavior of the catalysts upon s...

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Autores principales:	Ameel Mohammed Rahman, Ahmed J. Ali
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2009
Materias:	Platinum catalyst dehydrogenation metal dispersion Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/314387a29a914d9aa235cfc8a3ccfcf1
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id	oai:doaj.org-article:314387a29a914d9aa235cfc8a3ccfcf1
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spelling	oai:doaj.org-article:314387a29a914d9aa235cfc8a3ccfcf12021-12-02T04:16:50ZCharacterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction1818-1171https://doaj.org/article/314387a29a914d9aa235cfc8a3ccfcf12009-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=2372https://doaj.org/toc/1818-1171The dispersion of supported Pt and PtIr reforming catalysts have been studied, after treatment with oxidative and reducing atmosphere. Methylcyclohexane dehydrogenation reaction in the absence of hydrogen was used as a test reaction. An attempt was made to relate the behavior of the catalysts upon subject to reaction, to the dispersion of the same type of catalysts upon treatment with similar atmosphere and temperatures which appeared in literature. The total conversion of reaction can be explained by a change in metal dispersion. Thus, methylcyclohexane dehydrogenation reaction appears to be a really structure sensitive reaction. <br />The toluene yield increases as the oxidation temperature increases over the studied catalyst RG-402, RG-412, RG-422 and RG-432 respectively and reached a maximum value at 550°C. Above 550 the conversion decreases due to the effect of catalyst sintering. <br />No significant change were observed for reduction temperature range 400-600°C for the above studied catalysts.<br />The selectivity order for the studied catalysts and for reduction treatment experiments arranged as follows:<br />RG-422> RG-432> RG-412> RG-402<br />Ameel Mohammed RahmanAhmed J. AliAl-Khwarizmi College of Engineering – University of BaghdadarticlePlatinum catalystdehydrogenationmetal dispersionChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 5, Iss 3, Pp 77-86 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Platinum catalyst dehydrogenation metal dispersion Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Platinum catalyst dehydrogenation metal dispersion Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Ameel Mohammed Rahman Ahmed J. Ali Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
description	The dispersion of supported Pt and PtIr reforming catalysts have been studied, after treatment with oxidative and reducing atmosphere. Methylcyclohexane dehydrogenation reaction in the absence of hydrogen was used as a test reaction. An attempt was made to relate the behavior of the catalysts upon subject to reaction, to the dispersion of the same type of catalysts upon treatment with similar atmosphere and temperatures which appeared in literature. The total conversion of reaction can be explained by a change in metal dispersion. Thus, methylcyclohexane dehydrogenation reaction appears to be a really structure sensitive reaction. <br />The toluene yield increases as the oxidation temperature increases over the studied catalyst RG-402, RG-412, RG-422 and RG-432 respectively and reached a maximum value at 550°C. Above 550 the conversion decreases due to the effect of catalyst sintering. <br />No significant change were observed for reduction temperature range 400-600°C for the above studied catalysts.<br />The selectivity order for the studied catalysts and for reduction treatment experiments arranged as follows:<br />RG-422> RG-432> RG-412> RG-402<br />
format	article
author	Ameel Mohammed Rahman Ahmed J. Ali
author_facet	Ameel Mohammed Rahman Ahmed J. Ali
author_sort	Ameel Mohammed Rahman
title	Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
title_short	Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
title_full	Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
title_fullStr	Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
title_full_unstemmed	Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction
title_sort	characterization of metal dispersion of some naphtha reforming catalysts by methylcyclohexane dehydrogenation reaction
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2009
url	https://doaj.org/article/314387a29a914d9aa235cfc8a3ccfcf1
work_keys_str_mv	AT ameelmohammedrahman characterizationofmetaldispersionofsomenaphthareformingcatalystsbymethylcyclohexanedehydrogenationreaction AT ahmedjali characterizationofmetaldispersionofsomenaphthareformingcatalystsbymethylcyclohexanedehydrogenationreaction
_version_	1718401302362324992

Characterization of Metal Dispersion of Some Naphtha Reforming Catalysts by Methylcyclohexane Dehydrogenation Reaction

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