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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 LU ; Sipos, Pál and Pálinkó, István (2016) In Journal of Catalysis 335. p.125-134
Abstract

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... (More)

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.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Catalytic properties in oxidation reactions, Methods of synthesis, Mn(II)-amino acid complexes in CaAl-LDH, Structural characterization
in
Journal of Catalysis
volume
335
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:84957548794
  • wos:000371098200012
ISSN
0021-9517
DOI
10.1016/j.jcat.2015.12.023
language
English
LU publication?
yes
id
8b60575b-a8f2-495a-9682-01d94d2b6b5f
date added to LUP
2016-05-04 11:05:53
date last changed
2017-08-06 05:06:52
@article{8b60575b-a8f2-495a-9682-01d94d2b6b5f,
  abstract     = {<p>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.</p>},
  author       = {Varga, Gábor and Kukovecz, Ákos and Kónya, Zoltán and Korecz, László and Muráth, Szabolcs and Csendes, Zita and Peintler, Gábor and Carlson, Stefan and Sipos, Pál and Pálinkó, István},
  issn         = {0021-9517},
  keyword      = {Catalytic properties in oxidation reactions,Methods of synthesis,Mn(II)-amino acid complexes in CaAl-LDH,Structural characterization},
  language     = {eng},
  month        = {03},
  pages        = {125--134},
  publisher    = {Elsevier},
  series       = {Journal of Catalysis},
  title        = {Mn(II)-amino acid complexes intercalated in CaAl-layered double hydroxide - Well-characterized, highly efficient, recyclable oxidation catalysts},
  url          = {http://dx.doi.org/10.1016/j.jcat.2015.12.023},
  volume       = {335},
  year         = {2016},
}