Effect of the particle size and surface area of tungstated zirconia on the WOx nuclearity and n-heptane isomerization over Pt/WO3?ZrO2

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F11%3A00358979" target="_blank" >RIV/61388955:_____/11:00358979 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/11:00358979

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apcata.2011.02.020" target="_blank" >http://dx.doi.org/10.1016/j.apcata.2011.02.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcata.2011.02.020" target="_blank" >10.1016/j.apcata.2011.02.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of the particle size and surface area of tungstated zirconia on the WOx nuclearity and n-heptane isomerization over Pt/WO3?ZrO2

Popis výsledku v původním jazyce

Four series of tungstated zirconia of different surface area ranging from 100 to 20 m2 g1 and of micro- and nano-meter crystal size were investigated with respect to nuclearity and reducibility of WOx species, concentration of strong and weak acid sites,and n-heptane isomerization over Pt/WO3?ZrO2. The nuclearity of WOx species was analyzed by diffuse reflectance UV?Vis spectroscopy and their reducibility by TPR-H2. TPD of ammonia distinguished acid sites of different strengths. n-Heptane isomerizationproceeds over Pt/WO3?ZrO2 in hydrogen/nitrogen mixture at 250 °C. At least four types of WOx species differing in nuclearity were identified in tungstated zirconia by a maxima of absorption at 39 000, 35 000, 30 000 and 27 000 cm1, intensity of which depended on the surface area, crystal size and WO3 loading.

Název v anglickém jazyce

Effect of the particle size and surface area of tungstated zirconia on the WOx nuclearity and n-heptane isomerization over Pt/WO3?ZrO2

Popis výsledku anglicky

Four series of tungstated zirconia of different surface area ranging from 100 to 20 m2 g1 and of micro- and nano-meter crystal size were investigated with respect to nuclearity and reducibility of WOx species, concentration of strong and weak acid sites,and n-heptane isomerization over Pt/WO3?ZrO2. The nuclearity of WOx species was analyzed by diffuse reflectance UV?Vis spectroscopy and their reducibility by TPR-H2. TPD of ammonia distinguished acid sites of different strengths. n-Heptane isomerizationproceeds over Pt/WO3?ZrO2 in hydrogen/nitrogen mixture at 250 °C. At least four types of WOx species differing in nuclearity were identified in tungstated zirconia by a maxima of absorption at 39 000, 35 000, 30 000 and 27 000 cm1, intensity of which depended on the surface area, crystal size and WO3 loading.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/KAN100400702" target="_blank" >KAN100400702: Nanostrukturní materiály pro katalytické, elektrokatalytické a sorpční aplikace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis A - General

ISSN

0926-860X

e-ISSN

—

Svazek periodika

397

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

82-93

Kód UT WoS článku

000290841300010

EID výsledku v databázi Scopus

—