Impact of Parent Zirconia Crystallinity/Amorphicity on the n-heptane Isomerization over Pt/WO3-ZrO2 Catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00444884" target="_blank" >RIV/61388955:_____/15:00444884 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62243136:_____/15:MPO05CL

Výsledek na webu

<a href="http://dx.doi.org/10.9734/BJAST/2015/18557" target="_blank" >http://dx.doi.org/10.9734/BJAST/2015/18557</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.9734/BJAST/2015/18557" target="_blank" >10.9734/BJAST/2015/18557</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of Parent Zirconia Crystallinity/Amorphicity on the n-heptane Isomerization over Pt/WO3-ZrO2 Catalysts

Popis výsledku v původním jazyce

A series of WO3-ZrO2 catalysts containing 18% of WO3 were prepared from Zr(OH)4 pre-calcined at temperatures between 25 to 700°C, before W-introduction by impregnation. Thus, in accordance with that, the resulting parent Zr(OH)4 support possessed different degree of crystallinity and proportion of monoclinic to tetrahedral (M/T) phases which directly influenced the same M/T ratio in the final Pt/WO3-ZrO2 catalyst. The resulting catalysts varied in nuclearity and reducibility of formed WOx species, as revealed by UV-Vis spectroscopy and TPR-H2. Despite widely different surface area of the final catalysts, ranged from 140 to 47 m2/g, related to the proportion of M/T phases, ranged from 10%/90% to 90%/10%; the activity of the corresponding Pt/WO3-ZrO2 forisomerization of C7 was found to be directly proportional only to the total surface area of the resulting catalysts without specific effect of the crystal modifications of the support. In accordance with that a correlation was observed b

Název v anglickém jazyce

Impact of Parent Zirconia Crystallinity/Amorphicity on the n-heptane Isomerization over Pt/WO3-ZrO2 Catalysts

Popis výsledku anglicky

A series of WO3-ZrO2 catalysts containing 18% of WO3 were prepared from Zr(OH)4 pre-calcined at temperatures between 25 to 700°C, before W-introduction by impregnation. Thus, in accordance with that, the resulting parent Zr(OH)4 support possessed different degree of crystallinity and proportion of monoclinic to tetrahedral (M/T) phases which directly influenced the same M/T ratio in the final Pt/WO3-ZrO2 catalyst. The resulting catalysts varied in nuclearity and reducibility of formed WOx species, as revealed by UV-Vis spectroscopy and TPR-H2. Despite widely different surface area of the final catalysts, ranged from 140 to 47 m2/g, related to the proportion of M/T phases, ranged from 10%/90% to 90%/10%; the activity of the corresponding Pt/WO3-ZrO2 forisomerization of C7 was found to be directly proportional only to the total surface area of the resulting catalysts without specific effect of the crystal modifications of the support. In accordance with that a correlation was observed b

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI3%2F316" target="_blank" >FR-TI3/316: *Výzkum a vývoj katalyzátoru na bázi oxidu zirkoničitého a jeho aplikace pro izomeraci C5 a C6 uhlovodíkové frakce</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

British Journal of Applied Science & Technology

ISSN

2231-0843

e-ISSN

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Svazek periodika

10

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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