C-C coupling of 1-butanol over Mg- and Li-doped L-zeolite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00637090" target="_blank" >RIV/67985858:_____/25:00637090 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43931637

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0920586125002548?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586125002548?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2025.115436" target="_blank" >10.1016/j.cattod.2025.115436</a>

Jazyk výsledku

angličtina

Název v původním jazyce

C-C coupling of 1-butanol over Mg- and Li-doped L-zeolite

Popis výsledku v původním jazyce

In chemical technologies, the formation of carbon-carbon bonds has gained an increasing importance in recent years. In this work, we studied L-zeolite as a catalyst support for the gas-phase Guerbet coupling of 1-butanol at atmospheric pressure and 400 ◦C. Low-loaded monometallic (Mg and Li) catalysts were synthesized by incipient wetness impregnation and their physicochemical properties were characterized by N2 and Ar adsorptiondesorption isotherms, XRD, FT-IR, temperature-programmed desorption of NH3 and CO2, 29Si and 27Al MAS NMR, and XPS. XRD and FTIR results showed no major change in the crystal structure of the doped zeolite. Impregnation of the zeolite by Mg and Li decreased the surface area and significantly reduced the micropore volume, but crystallinity was preserved. 29Si MAS NMR indicated that desilication had occurred to some extent during catalyst impregnation, which led to the formation of mesopores. The Li/L catalyst showed more basic sites of intermediate strength due to surface Li-O pairs on the surface, which, together with mesoporosity, contribute to enhancing 1-butanol conversion by C-C coupling. The Li/L catalyst was more selective to C8 oxygenate products than the reference aldol condensation catalyst.

Název v anglickém jazyce

C-C coupling of 1-butanol over Mg- and Li-doped L-zeolite

Popis výsledku anglicky

In chemical technologies, the formation of carbon-carbon bonds has gained an increasing importance in recent years. In this work, we studied L-zeolite as a catalyst support for the gas-phase Guerbet coupling of 1-butanol at atmospheric pressure and 400 ◦C. Low-loaded monometallic (Mg and Li) catalysts were synthesized by incipient wetness impregnation and their physicochemical properties were characterized by N2 and Ar adsorptiondesorption isotherms, XRD, FT-IR, temperature-programmed desorption of NH3 and CO2, 29Si and 27Al MAS NMR, and XPS. XRD and FTIR results showed no major change in the crystal structure of the doped zeolite. Impregnation of the zeolite by Mg and Li decreased the surface area and significantly reduced the micropore volume, but crystallinity was preserved. 29Si MAS NMR indicated that desilication had occurred to some extent during catalyst impregnation, which led to the formation of mesopores. The Li/L catalyst showed more basic sites of intermediate strength due to surface Li-O pairs on the surface, which, together with mesoporosity, contribute to enhancing 1-butanol conversion by C-C coupling. The Li/L catalyst was more selective to C8 oxygenate products than the reference aldol condensation catalyst.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/TN02000044" target="_blank" >TN02000044: Biorafinace a cirkulární ekonomika pro udržitelnost</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

1873-4308

Svazek periodika

459

Číslo periodika v rámci svazku

NOV 1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

115436

Kód UT WoS článku

001523101400002

EID výsledku v databázi Scopus

2-s2.0-105009254247