Carbon-Supported Mo Catalysts Prepared by a New Impregnation Method Using a MoO3/Water Slurry: Saturated Loading, Hydrodesulfurization Activity and Promotion by Co.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F01%3A27013063" target="_blank" >RIV/67985858:_____/01:27013063 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Carbon-Supported Mo Catalysts Prepared by a New Impregnation Method Using a MoO3/Water Slurry: Saturated Loading, Hydrodesulfurization Activity and Promotion by Co.

Popis výsledku v původním jazyce

MoO3/activated carbon catalysts were prepared by a new impregnation method: Mo species were adsorbed from a MoO3/water slurry. The maximum achieved loading was 27-34 wt.% MoO3, for various carbons and the deposited phase was X-ray amorphous. The surfacearea and volume of micropores of the carbon supports dropped by about 40% after saturation of the supports with molybdenum trioxide. For the support Norit RX, the point of zero charge decreased from an initial 8.2 to about 2.6 as the MoO3 loading increased up to about 15% and then levelled off. The catalytic activity for the hydrodesulfurization of thiophene increased linearly with loading up to about 15% and then almost levelled off. A strong synergistic affect in activity was achieved by addition of Co to the 15% MoO3/C catalyst; however, the sznergism observed when adding Co to a saturated 33% MoO3/C catalyst was small. It was concluded that molybdenum trioxide is chemisorbed in a highly dispersed 'monolayer' form up to a loading of

Název v anglickém jazyce

Carbon-Supported Mo Catalysts Prepared by a New Impregnation Method Using a MoO3/Water Slurry: Saturated Loading, Hydrodesulfurization Activity and Promotion by Co.

Popis výsledku anglicky

MoO3/activated carbon catalysts were prepared by a new impregnation method: Mo species were adsorbed from a MoO3/water slurry. The maximum achieved loading was 27-34 wt.% MoO3, for various carbons and the deposited phase was X-ray amorphous. The surfacearea and volume of micropores of the carbon supports dropped by about 40% after saturation of the supports with molybdenum trioxide. For the support Norit RX, the point of zero charge decreased from an initial 8.2 to about 2.6 as the MoO3 loading increased up to about 15% and then levelled off. The catalytic activity for the hydrodesulfurization of thiophene increased linearly with loading up to about 15% and then almost levelled off. A strong synergistic affect in activity was achieved by addition of Co to the 15% MoO3/C catalyst; however, the sznergism observed when adding Co to a saturated 33% MoO3/C catalyst was small. It was concluded that molybdenum trioxide is chemisorbed in a highly dispersed 'monolayer' form up to a loading of

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/IAA4072802" target="_blank" >IAA4072802: Heterogenní katalyzátory a prekursory monovrstevného typu: nový typ synthesy "Suspenzní impregnací"</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Carbon

ISSN

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e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

2023-2034

Kód UT WoS článku

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EID výsledku v databázi Scopus

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