Influence of Acid-Base Characteristics of Different Structural-Type Zeolites (FER, MFI, FAU, BEA) on Their Activity and Selectivity in Isobutanol Dehydration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00585658" target="_blank" >RIV/61388955:_____/24:00585658 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10492129

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202400068" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202400068</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cctc.202400068" target="_blank" >10.1002/cctc.202400068</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Acid-Base Characteristics of Different Structural-Type Zeolites (FER, MFI, FAU, BEA) on Their Activity and Selectivity in Isobutanol Dehydration

Popis výsledku v původním jazyce

The different structural-type zeolites (FER, MFI, FAU, BEA) are investigated as catalysts in (bio)isobutanol conversion into linear butenes. The zeolites´ structure and morphology are confirmed by XRD, N2 (77 K) ad(de)sorption, SEM, EDX, XPS, and 27Al, 29Si, 1H MAS NMR, 1H-29Si CP MAS NMR. The nature and strength of acid-base sites are determined by FTIR spectroscopy of adsorbed pyridine, potentiometric titration, and TPD of NH3/CO2/H2O with MS control. The acid-base properties of the zeolites ' surfaces influence their catalytic properties in the target process. The higher selectivity towards linear butene isomers achieved over FER and MFI can be explained by the high strength and density of Bronsted acid sites (over 90 % of the total surface acidity). MFI might be regarded as a potential material for the creation of novel catalysts for isobutanol conversion into linear butenes at moderate temperatures (448-473 K) since it offers greater operating stability throughout the process.

Název v anglickém jazyce

Influence of Acid-Base Characteristics of Different Structural-Type Zeolites (FER, MFI, FAU, BEA) on Their Activity and Selectivity in Isobutanol Dehydration

Popis výsledku anglicky

The different structural-type zeolites (FER, MFI, FAU, BEA) are investigated as catalysts in (bio)isobutanol conversion into linear butenes. The zeolites´ structure and morphology are confirmed by XRD, N2 (77 K) ad(de)sorption, SEM, EDX, XPS, and 27Al, 29Si, 1H MAS NMR, 1H-29Si CP MAS NMR. The nature and strength of acid-base sites are determined by FTIR spectroscopy of adsorbed pyridine, potentiometric titration, and TPD of NH3/CO2/H2O with MS control. The acid-base properties of the zeolites ' surfaces influence their catalytic properties in the target process. The higher selectivity towards linear butene isomers achieved over FER and MFI can be explained by the high strength and density of Bronsted acid sites (over 90 % of the total surface acidity). MFI might be regarded as a potential material for the creation of novel catalysts for isobutanol conversion into linear butenes at moderate temperatures (448-473 K) since it offers greater operating stability throughout the process.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LM2023072" target="_blank" >LM2023072: Laboratoř fyziky povrchů – Vodíkové technologické centrum</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

ChemCatChem

ISSN

1867-3880

e-ISSN

1867-3899

Svazek periodika

16

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

e202400068

Kód UT WoS článku

001202412100001

EID výsledku v databázi Scopus

2-s2.0-85190401615