Ni-Bi-Mo/Al2O3 Metal-Oxide Catalysts for CO2-Mediated Oxidative Dehydrogenation of n-Butane into Buta-1,3-diene: Mutual Influence of Components

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A90272%2F25%3A10512411" target="_blank" >RIV/00216208:90272/25:10512411 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=csvY-k274n" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=csvY-k274n</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10562-025-05107-4" target="_blank" >10.1007/s10562-025-05107-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ni-Bi-Mo/Al2O3 Metal-Oxide Catalysts for CO2-Mediated Oxidative Dehydrogenation of n-Butane into Buta-1,3-diene: Mutual Influence of Components

Popis výsledku v původním jazyce

Ni-Bi-Mo/Al2O3 metal-oxide systems are prepared by co-impregnation of gamma-Al2O3 with water-soluble salts of Ni, Bi, and Mo and are investigated as catalysts for CO2-mediated oxidative dehydrogenation of n-butane into buta-1,3-diene. The structure, morphology, reducibility, re-oxidizing ability, and acid-base properties of the metal-oxide systems have been studied using XRD, SEM-EDX, low-temperature (-196 degrees C) N-2 ad(de)sorption, Raman spectroscopy, TPR, TPRO, and TPD-NH3/CO2 techniques. TPSR-MS measurements with pre-adsorbed n-butane and butenes have been conducted to assess the possibilities of the individual stages of n-butane dehydrogenation on the sample&apos;s surface. The adsorption and activation of alkanes on the surface are proposed to be the rate-determining steps of the process. Lewis acid-base pair sites of weak and medium strength, formed with the participation of nickel and molybdenum, are suggested to promote the dehydrogenation reaction. The dehydrogenation of n-butane into mono- and di-olefins is significantly enhanced by the active sites formed with the participation of nickel. The addition of molybdenum to the catalyst composition results in the formation of active oxygen-containing sites that can abstract hydrogen from the alkene molecule. The higher rate of buta-1,3-diene formation achieved on the Ni-Mo/Al2O3 catalyst results from the synergistic effect of nickel- and molybdenum-containing active sites.

Název v anglickém jazyce

Ni-Bi-Mo/Al2O3 Metal-Oxide Catalysts for CO2-Mediated Oxidative Dehydrogenation of n-Butane into Buta-1,3-diene: Mutual Influence of Components

Popis výsledku anglicky

Ni-Bi-Mo/Al2O3 metal-oxide systems are prepared by co-impregnation of gamma-Al2O3 with water-soluble salts of Ni, Bi, and Mo and are investigated as catalysts for CO2-mediated oxidative dehydrogenation of n-butane into buta-1,3-diene. The structure, morphology, reducibility, re-oxidizing ability, and acid-base properties of the metal-oxide systems have been studied using XRD, SEM-EDX, low-temperature (-196 degrees C) N-2 ad(de)sorption, Raman spectroscopy, TPR, TPRO, and TPD-NH3/CO2 techniques. TPSR-MS measurements with pre-adsorbed n-butane and butenes have been conducted to assess the possibilities of the individual stages of n-butane dehydrogenation on the sample&apos;s surface. The adsorption and activation of alkanes on the surface are proposed to be the rate-determining steps of the process. Lewis acid-base pair sites of weak and medium strength, formed with the participation of nickel and molybdenum, are suggested to promote the dehydrogenation reaction. The dehydrogenation of n-butane into mono- and di-olefins is significantly enhanced by the active sites formed with the participation of nickel. The addition of molybdenum to the catalyst composition results in the formation of active oxygen-containing sites that can abstract hydrogen from the alkene molecule. The higher rate of buta-1,3-diene formation achieved on the Ni-Mo/Al2O3 catalyst results from the synergistic effect of nickel- and molybdenum-containing active sites.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Catalysis Letters

ISSN

1011-372X

e-ISSN

1572-879X

Svazek periodika

155

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

21

Strana od-do

266

Kód UT WoS článku

001525412400001

EID výsledku v databázi Scopus

2-s2.0-105009973308