Počet záznamů: 1

Efficient and Reusable Pb(II) Metal-Organic Framework for Knoevenagel Condensation

SYSNO ASEP	0492268
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Efficient and Reusable Pb(II) Metal-Organic Framework for Knoevenagel Condensation
Tvůrce(i)	Almáši, M. (SK) Zeleňák, V. (SK) Opanasenko, Maksym (UFCH-W)_{RID, ORCID} Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Zdroj.dok.	Catalysis Letters - ISSN 1011-372X Roč. 148, č. 8 (2018), s. 2263-2273
Poč.str.	11 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	pillared molecular-sieve ; catalytic-activity ; 2-dimensional zeolites ; mesoporous materials ; trans-carveol ; lewis acidity
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
Obor OECD	Physical chemistry
CEP	GBP106/12/G015 GA ČR - Grantová agentura ČR
Institucionální podpora	UFCH-W - RVO:61388955
UT WOS	000439734700006
EID SCOPUS	85049228703
DOI	10.1007/s10562-018-2471-8
Anotace	MWW-type zeolites with different textural properties, namely, MCM-22, MCM-36, MCM-56, and MCM-49, were synthesized and tested in the selective preparation of campholenic aldehyde by isomerization ofpinene oxide. Commercial zeolites USY, Beta, and ZSM-5 were compared. The physico-chemical properties of the studied zeolites were correlated with their catalytic performance in the isomerization ofpinene oxide carried out either in toluene as a solvent at 70 degrees C or in N,N-dimethylacetamide at 140 degrees C.Pinene oxide isomerizes easily in the presence of acids and therefore, high conversions were achieved over commercial as well as synthesized MWW catalysts. Higher selectivities to campholenic aldehyde were achieved over MWW catalysts in basic N,N-dimethylacetamide while non-basic toluene enhanced the formation of the desired aldehyde over all the commercial zeolites. The highest selectivity to the desired aldehyde was achieved over MCM-22 in the reaction performed in N,N-dimethylacetamide at 140 degrees C, being 83% at total conversion ofpinene oxide. This is the best result achieved rivaling homogenous acids (ZnBr2) and metal-organic frameworks.
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