Počet záznamů: 1

MoO3 on zeolites MCM-22, MCM-56 and 2D-MFI as catalysts for 1-octene metathesis

SYSNO ASEP	0497398
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	MoO3 on zeolites MCM-22, MCM-56 and 2D-MFI as catalysts for 1-octene metathesis
Tvůrce(i)	Balcar, Hynek (UFCH-W)_{RID, ORCID} Kubů, Martin (UFCH-W)_RID Žilková, Naděžda (UFCH-W)_{RID, ORCID} Shamzhy, Mariya (UFCH-W)_{RID, ORCID}
Zdroj.dok.	Beilstein Journal of Organic Chemistry. - : Beilstein - Institut zur Foerderung der Chemischen Wissenschaften - ISSN 1860-5397 Roč. 14, NOV 2018 (2018), s. 2931-2939
Poč.str.	9 s.
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	metathesis ; molybdenum oxide ; 1-octene
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
Obor OECD	Physical chemistry
CEP	GA17-01440S GA ČR - Grantová agentura ČR
Způsob publikování	Open access
Institucionální podpora	UFCH-W - RVO:61388955
UT WOS	000451822100001
EID SCOPUS	85057752799
DOI	10.3762/bjoc.14.272
Anotace	Highly active olefin metathesis catalysts were prepared by thermal spreading MoO3 and/or MoO2(acac)2 on MWW zeolites (MCM-22, delaminated MCM-56) and on two-dimensional MFI (all in NH4+ form). The catalysts‘ activities were tested in the metathesis of neat 1-octene (as an example of a longer chain olefin) at 40 °C. Catalysts with 6 wt % or 5 wt % of Mo were used. The acidic character of the supports had an important effect on both the catalyst activity and selectivity. The catalyst activity increases in the order 6MoO3/HZSM-5(25) (Si/Al = 25) << 6MoO2(acac)2/MCM-22(70) < 6MoO3/2D-MFI(26) < 6MoO3/MCM-56(13) < 6MoO3/MCM-22(28) reflecting both the enhancing effect of the supports‘ acidity and accessibility of the catalytic species on the surface. On the other hand the supports‘ acidity decreases the selectivity to the main metathesis product C14 due to an acid-catalyzed double bond isomerization (followed by cross metathesis) and oligomerization. 6MoO3/2D-MFI(26) with a lower concentration of the acidic centres resulting in catalysts of moderate activity but with the highest selectivity.
Pracoviště	Ústav fyzikální chemie J.Heyrovského
Kontakt	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Rok sběru	2019

Počet záznamů: 1