J 2023

Catalytic performance of micro-mesoporous zirconosilicates prepared by non-hydrolytic sol-gel in ethanol-acetaldehyde conversion to butadiene and related reactions

HRADSKÝ, Dalibor, Petr MACHÁČ, David SKODA, Lucie LEONOVÁ, Petr SAZAMA et. al.

Basic information

Original name

Catalytic performance of micro-mesoporous zirconosilicates prepared by non-hydrolytic sol-gel in ethanol-acetaldehyde conversion to butadiene and related reactions

Authors

HRADSKÝ, Dalibor (203 Czech Republic, belonging to the institution), Petr MACHÁČ (203 Czech Republic, belonging to the institution), David SKODA, Lucie LEONOVÁ (203 Czech Republic, belonging to the institution), Petr SAZAMA, Jana PASTVOVA, Dalibor KAUCKY, Dalibor VŠIANSKÝ (203 Czech Republic, belonging to the institution), Zdeněk MORAVEC (203 Czech Republic, belonging to the institution) and Aleš STÝSKALÍK (203 Czech Republic, guarantor, belonging to the institution)

Edition

Applied Catalysis A: General, Elsevier B.V, 2023, 0926-860X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.500 in 2022

RIV identification code

RIV/00216224:14310/23:00131008

Organization unit

Faculty of Science

UT WoS

000975837400001

Keywords in English

Zirconosilicate; Micro-mesoporous; Non-hydrolytic sol -gel; Ethanol to butadiene transformation; Aldol condensation; MPV reaction

Tags

International impact, Reviewed
Změněno: 17/10/2024 12:41, Ing. Marie Švancarová

Abstract

V originále

The open porosity and number of Lewis acid sites in metal silicates (M = Zr, Ta) have been reported as key factors enabling reaching high butadiene (BD) productivity from ethanol. However, some microporous zeolites recently displayed very high BD yields. To gain a deeper insight, we have applied non-hydrolytic sol-gel (NHSG) in the preparation of micro-mesoporous zirconosilicates. The porosity, structure, and acidity of these materials have been described and compared to a benchmark sample prepared by dry impregnation. The detailed characterization proved that NHSG preparation provided highly homogeneous Zr dispersion in silica leading to almost doubled Lewis acid site numbers and higher activity in ethanol-acetaldehyde conversion to BD, MeerweinPonndorf-Verley (MPV) reaction, and aldol condensation, in comparison to the catalyst prepared by dry impregnation. The selectivity and stability were similar for catalysts prepared by NHSG and dry impregnation.

Links

GJ20-03636Y, research and development project
Name: Nové katalyzátory pro přípravu 1,3-butadienu z ethanolu
Investor: Czech Science Foundation
MUNI/A/1209/2022, interní kód MU
Name: Molekuly, komplexy, makrocykly a xerogely
Investor: Masaryk University, Molecules, complexes, macrocycles, and xerogels
90110, large research infrastructures
Name: CzechNanoLab
90124, large research infrastructures
Name: NanoEnviCz II
90127, large research infrastructures
Name: CIISB II