Mn(II)-amino acid complexes intercalated in CaAl-layered double hydroxide - Well-characterized, highly efficient, recyclable oxidation catalysts

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Mn(II)-amino acid complexes intercalated in CaAl-layered double hydroxide - Well-characterized, highly efficient, recyclable oxidation catalysts. / Varga, Gábor; Kukovecz, Ákos; Kónya, Zoltán; Korecz, László; Muráth, Szabolcs; Csendes, Zita; Peintler, Gábor; Carlson, Stefan; Sipos, Pál; Pálinkó, István.

I: Journal of Catalysis, Vol. 335, 01.03.2016, s. 125-134.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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Varga, Gábor ; Kukovecz, Ákos ; Kónya, Zoltán ; Korecz, László ; Muráth, Szabolcs ; Csendes, Zita ; Peintler, Gábor ; Carlson, Stefan ; Sipos, Pál ; Pálinkó, István. / Mn(II)-amino acid complexes intercalated in CaAl-layered double hydroxide - Well-characterized, highly efficient, recyclable oxidation catalysts. I: Journal of Catalysis. 2016 ; Vol. 335. s. 125-134.

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TY - JOUR

T1 - Mn(II)-amino acid complexes intercalated in CaAl-layered double hydroxide - Well-characterized, highly efficient, recyclable oxidation catalysts

AU - Varga, Gábor

AU - Kukovecz, Ákos

AU - Kónya, Zoltán

AU - Korecz, László

AU - Muráth, Szabolcs

AU - Csendes, Zita

AU - Peintler, Gábor

AU - Carlson, Stefan

AU - Sipos, Pál

AU - Pálinkó, István

PY - 2016/3/1

Y1 - 2016/3/1

N2 - Intercalated composite materials were prepared with CaAl-layered double hydroxide as the host and Mn(II)-amino acid (l-cysteine, l-histidine and l-tyrosine) complex anions as the guest. Two methods (intercalation of the ligand first followed by constructing the complex; preforming the complex first, then introducing it among the layers of the host) and optimization of the auxiliary conditions were performed to arrive at composites having the complex exclusively among the layers. The obtained substances were structurally characterized by powder X-ray diffractometry, mid IR spectroscopy in diffuse reflectance mode and with ATR or photoacoustic detections, and scanning electron microscopy. The structural features of the intercalant (coordination number, coordination sites) were elucidated by classical chemical and energy dispersive X-ray analyses, EPR, X-ray absorption and far IR spectroscopies. Structural models are also given. The catalytic activities, selectivities and recycling abilities of the substances were studied in the oxidation reactions of cyclohexene with peracetic acid and in situ formed iodosylbenzene as oxidants and allylic alcohol with peracetic acid, in the liquid phase. The intercalated substances proved to be efficient and highly selective (with peracetic acid: outstanding epoxide, with iodosylbenzene superior diol selectivities) catalysts with very good recycling abilities.

AB - Intercalated composite materials were prepared with CaAl-layered double hydroxide as the host and Mn(II)-amino acid (l-cysteine, l-histidine and l-tyrosine) complex anions as the guest. Two methods (intercalation of the ligand first followed by constructing the complex; preforming the complex first, then introducing it among the layers of the host) and optimization of the auxiliary conditions were performed to arrive at composites having the complex exclusively among the layers. The obtained substances were structurally characterized by powder X-ray diffractometry, mid IR spectroscopy in diffuse reflectance mode and with ATR or photoacoustic detections, and scanning electron microscopy. The structural features of the intercalant (coordination number, coordination sites) were elucidated by classical chemical and energy dispersive X-ray analyses, EPR, X-ray absorption and far IR spectroscopies. Structural models are also given. The catalytic activities, selectivities and recycling abilities of the substances were studied in the oxidation reactions of cyclohexene with peracetic acid and in situ formed iodosylbenzene as oxidants and allylic alcohol with peracetic acid, in the liquid phase. The intercalated substances proved to be efficient and highly selective (with peracetic acid: outstanding epoxide, with iodosylbenzene superior diol selectivities) catalysts with very good recycling abilities.

KW - Catalytic properties in oxidation reactions

KW - Methods of synthesis

KW - Mn(II)-amino acid complexes in CaAl-LDH

KW - Structural characterization

UR - http://www.scopus.com/inward/record.url?scp=84957548794&partnerID=8YFLogxK

U2 - 10.1016/j.jcat.2015.12.023

DO - 10.1016/j.jcat.2015.12.023

M3 - Article

AN - SCOPUS:84957548794

VL - 335

SP - 125

EP - 134

JO - Journal of Catalysis

JF - Journal of Catalysis

SN - 1090-2694

ER -