Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis
An extensive study of Higher Alcohols Synthesis (HAS) from syngas using alkalized MoS2 catalysts supported on Carbon Nanotubes (CNTs) is reported. Up to 30wt.% of Mo and 8wt.% K are added to the CNTs by impregnation method. The catalysts were characterized by different methods and the performance of...
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2013-03-01
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doaj-4f095d253cde47d99df703cf65d40ea52020-11-25T01:29:00ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering 1021-99861021-99862013-03-0132111195900Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols SynthesisAhmad Tavasoli0Saba Karimi1Hamideh Nikookar2Hamzeh Fadakar3School of Chemistry, College of Science, University of Tehran, Tehran, I.R. IRANSchool of Chemistry, College of Science, University of Tehran, Tehran, I.R. IRANSchool of Chemistry, College of Science, University of Tehran, Tehran, I.R. IRANSchool of Chemistry, College of Science, University of Tehran, Tehran, I.R. IRANAn extensive study of Higher Alcohols Synthesis (HAS) from syngas using alkalized MoS2 catalysts supported on Carbon Nanotubes (CNTs) is reported. Up to 30wt.% of Mo and 8wt.% K are added to the CNTs by impregnation method. The catalysts were characterized by different methods and the performance of the catalysts was assessed in a micro-reactor. TEM images showed that most of the metal particles were homogeneously distributed inside the tubes and the rest on the outer surface of the CNTs, with particle sizes in the range of 3 to 16 nm. Temperature Programmed Reduction (TPR) tests showed that increasing the amount of Mo decreased the first TPR peak from 518 to 503oC and increased the second TPR peak temperature from 782 to 825oC. The diffraction peaks representing the characteristic K-Mo-O phase (these species can enhance formation of higher alcohols) were observed in the XRD of catalysts. The catalyst with 20 wt.% Mo and 8 wt.% K showed the highest conversion. The total alcohol selectivity reached a maximum of 45.3 wt.% on the catalyst with 15 wt.% Mo. The catalyst with 15 wt.% Mo exhibited selectivity of 35.3 wt.% towards higher alcohols.http://www.ijcce.ac.ir/article_5900_9e60c7834efed78322fa4cf4df436f32.pdfhigher alcohols synthesis (has)molybdenumloadingcarbon nanotubesphysicochemical propertiesactivityselectivity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ahmad Tavasoli Saba Karimi Hamideh Nikookar Hamzeh Fadakar |
spellingShingle |
Ahmad Tavasoli Saba Karimi Hamideh Nikookar Hamzeh Fadakar Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis Iranian Journal of Chemistry & Chemical Engineering higher alcohols synthesis (has) molybdenum loading carbon nanotubes physicochemical properties activity selectivity |
author_facet |
Ahmad Tavasoli Saba Karimi Hamideh Nikookar Hamzeh Fadakar |
author_sort |
Ahmad Tavasoli |
title |
Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis |
title_short |
Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis |
title_full |
Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis |
title_fullStr |
Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis |
title_full_unstemmed |
Molybdenum Loading Effects on the Physico-Chemical Properties and Performance of Carbon Nanotubes Supported Alkalized MoS2 Catalysts for Higher Alcohols Synthesis |
title_sort |
molybdenum loading effects on the physico-chemical properties and performance of carbon nanotubes supported alkalized mos2 catalysts for higher alcohols synthesis |
publisher |
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
series |
Iranian Journal of Chemistry & Chemical Engineering |
issn |
1021-9986 1021-9986 |
publishDate |
2013-03-01 |
description |
An extensive study of Higher Alcohols Synthesis (HAS) from syngas using alkalized MoS2 catalysts supported on Carbon Nanotubes (CNTs) is reported. Up to 30wt.% of Mo and 8wt.% K are added to the CNTs by impregnation method. The catalysts were characterized by different methods and the performance of the catalysts was assessed in a micro-reactor. TEM images showed that most of the metal particles were homogeneously distributed inside the tubes and the rest on the outer surface of the CNTs, with particle sizes in the range of 3 to 16 nm. Temperature Programmed Reduction (TPR) tests showed that increasing the amount of Mo decreased the first TPR peak from 518 to 503oC and increased the second TPR peak temperature from 782 to 825oC. The diffraction peaks representing the characteristic K-Mo-O phase (these species can enhance formation of higher alcohols) were observed in the XRD of catalysts. The catalyst with 20 wt.% Mo and 8 wt.% K showed the highest conversion. The total alcohol selectivity reached a maximum of 45.3 wt.% on the catalyst with 15 wt.% Mo. The catalyst with 15 wt.% Mo exhibited selectivity of 35.3 wt.% towards higher alcohols. |
topic |
higher alcohols synthesis (has) molybdenum loading carbon nanotubes physicochemical properties activity selectivity |
url |
http://www.ijcce.ac.ir/article_5900_9e60c7834efed78322fa4cf4df436f32.pdf |
work_keys_str_mv |
AT ahmadtavasoli molybdenumloadingeffectsonthephysicochemicalpropertiesandperformanceofcarbonnanotubessupportedalkalizedmos2catalystsforhigheralcoholssynthesis AT sabakarimi molybdenumloadingeffectsonthephysicochemicalpropertiesandperformanceofcarbonnanotubessupportedalkalizedmos2catalystsforhigheralcoholssynthesis AT hamidehnikookar molybdenumloadingeffectsonthephysicochemicalpropertiesandperformanceofcarbonnanotubessupportedalkalizedmos2catalystsforhigheralcoholssynthesis AT hamzehfadakar molybdenumloadingeffectsonthephysicochemicalpropertiesandperformanceofcarbonnanotubessupportedalkalizedmos2catalystsforhigheralcoholssynthesis |
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