J 2023

Propylene Metathesis over Molybdenum Silicate Microspheres with Dispersed Active Sites

SKODA, David, Ran ZHU, Barbora HANULIKOVA, Aleš STÝSKALÍK, Vít VYKOUKAL et. al.

Basic information

Original name

Propylene Metathesis over Molybdenum Silicate Microspheres with Dispersed Active Sites

Authors

SKODA, David, Ran ZHU, Barbora HANULIKOVA, Aleš STÝSKALÍK (203 Czech Republic, belonging to the institution), Vít VYKOUKAL (203 Czech Republic, belonging to the institution), Petr MACHÁČ (203 Czech Republic, belonging to the institution), Lucie ŠIMONÍKOVÁ (203 Czech Republic, belonging to the institution), Ivo KURITKA, Claude POLEUNIS, Damien P DEBECKER and Yuriy ROMAN-LESHKOV (guarantor)

Edition

ACS Catalysis, WASHINGTON, AMER CHEMICAL SOC, 2023, 2155-5435

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10403 Physical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 12.900 in 2022

RIV identification code

RIV/00216224:14310/23:00132624

Organization unit

Faculty of Science

DOI

UT WoS

001069968800001

Keywords in English

molybdenum silicate; olefin metathesis; nonaqueous; microspheres; catalyst; propylene

Tags

Tags

International impact, Reviewed
Změněno: 15/10/2024 15:07, Ing. Jana Kuchtová

Abstract

V originále

In this work, we demonstrate that amorphous and porous molybdenum silicate microspheres are highly active catalysts for heterogeneous propylene metathesis. Homogeneous molybdenum silicate microspheres and aluminum-doped molybdenum silicate microspheres were synthesized via a nonaqueous condensation of a hybrid molybdenum biphenyldicarboxylatebased precursor solution with (3-aminopropyl)triethoxysilane. The as-prepared hybrid metallosilicate products were calcined at 500 degrees C to obtain amorphous and porous molybdenum silicate and aluminum-doped molybdenum silicate microspheres with highly dispersed molybdate species inserted into the silicate matrix. These catalysts contain mainly highly dispersed MoOx species, which possess high catalytic activity in heterogeneous propylene metathesis to ethylene and butene. Compared to conventional silica-supported MoOx catalysts prepared via incipient wetness impregnation (MoIWI), the microspheres with low Mo content (1.5-3.6 wt %) exhibited nearly 2 orders of magnitude higher steady-state propylene metathesis rates at 200 degrees C, approaching site time yields of 0.11 s-1.

Links

EF18_046/0015974, research and development project
Name: Modernizace České infrastruktury pro integrativní strukturní biologii
GJ20-03636Y, research and development project
Name: Nové katalyzátory pro přípravu 1,3-butadienu z ethanolu
Investor: Czech Science Foundation
LUAUS23085, research and development project
Name: Syntéza nových vysoce aktivních metalosilikátových katalyzátorů pro metatezi olefinů
Investor: Ministry of Education, Youth and Sports of the CR, Synthesis of new highly active metallosilicate catalysts for olefin metathesis, INTER-ACTION (USA)
MUNI/A/1209/2022, interní kód MU
Name: Molekuly, komplexy, makrocykly a xerogely
Investor: Masaryk University, Molecules, complexes, macrocycles, and xerogels
MUNI/A/1298/2022, interní kód MU
Name: Základní a aplikovaný výzkum a vývoj metod chemické a fyzikálně chemické analýzy pro studium přírody a pokročilé technologie
Investor: Masaryk University, Basic and applied research and development of chemical and physicochemical analytical methods for the study of nature and advanced technology
MUNI/J/0007/2021, interní kód MU
Name: Tailored Catalysts for Carbon Dioxide Utilization
Investor: Masaryk University, MASH JUNIOR - MUNI Award In Science and Humanities JUNIOR
90110, large research infrastructures
Name: CzechNanoLab
90242, large research infrastructures
Name: CIISB III