Oxidation of Cysteinate Anions Immobilized in the Interlamellar Space of CaAl-Layered Double Hydroxide

被引:0
|
作者
Timar, Zita [1 ,2 ,3 ]
Hung, Truong Ngoc [1 ,2 ,3 ]
Pravda, Cora [4 ]
Konya, Zoltan [4 ,5 ]
Kukovecz, Akos [4 ]
Sipos, Pal [1 ,2 ,6 ]
Varga, Gabor [1 ,2 ,7 ]
Palinko, Istvan [1 ,2 ,3 ]
机构
[1] Univ Szeged, Mat & Solut Struct Res Grp, Aradi Vertanuk Tere 1, H-6720 Szeged, Hungary
[2] Univ Szeged, Interdisciplinary Excellence Ctr, Inst Chem, Aradi Vertanuk Tere 1, H-6720 Szeged, Hungary
[3] Univ Szeged, Dept Organ Chem, Dom Ter 8, H-6720 Szeged, Hungary
[4] Univ Szeged, Dept Appl & Environm Chem, H-6720 Szeged, Hungary
[5] MTA SZTE React Kinet & Surface Chem Res Grp, H-6720 Szeged, Hungary
[6] Univ Szeged, Dept Inorgan & Analyt Chem, Dom Ter 7, H-6720 Szeged, Hungary
[7] Univ Szeged, Dept Phys Chem & Mat Sci, H-6720 Szeged, Hungary
关键词
cysteine oxo acids; cysteinate oxidation to cystinate; cysteinate anion-pillared CaAl-layered double hydroxide (LDH); confined space— molecular reactor; NITRILE HYDRATASE; ACID; CYSTINE; SPECTROSCOPY; MEDIA;
D O I
10.3390/ma14051202
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
L-Cysteinate-intercalated CaAl-layered double hydroxide (LDH) was prepared by the co-precipitation method producing highly crystalline hydrocalumite phase with a well-pillared interlayer gallery. The obtained materials were characterized by X-ray diffractometry, IR as well as Raman spectroscopies. By performing interlamellar oxidation reactions with peracetic acid as oxidant, oxidation of cysteinate to cystinate in aqueous and cysteinate sulfenic acid in acetonic suspensions occurred. The oxidations could be performed under mild conditions, at room temperature, under neutral pH and in air. It has been shown that the transformation pathways are due to the presence of the layered structure, that is, the confined space of the LDH behaved as molecular reactor.
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页码:1 / 10
页数:10
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