NDLI: Chitosan-mediated synthesis of mesoporous α-Fe$_{2}$O$_{3}$ nanoparticles and their applications in catalyzing selective oxidation of cyclohexane

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Chitosan-mediated synthesis of mesoporous α-Fe$_{2}$O$_{3}$ nanoparticles and their applications in catalyzing selective oxidation of cyclohexane

Content Provider	Springer Nature Link
Author	Huang, ChangLiang Zhang, HongYe Sun, ZhenYu Liu, ZhiMin
Copyright Year	2010
Abstract	This paper reports the chitosan-mediated synthesis of porous hematite nanoparticles with FeCl$_{3}$ as the precursor via a hydrothermal approach at 160 °C. A series of porous chitosan/iron oxide hybrid nanoparticles were obtained via changing the ratio of chitosan to FeCl$_{3}$, FeCl$_{3}$ concentration and pH value of the reaction solution, and producing porous iron oxide nanoparticles after calcination. The as-prepared samples were characterized by means of X-ray diffraction, transmission electron microscopy, thermal gravimetric analysis, Fourier transform infrared, and N$_{2}$ sorption. The particle sizes of these metal oxides were less than 100 nm, and the pore sizes were in the range of 2–16 nm. It was demonstrated that chitosan played a key role in the formation of the porous structures. The resultant α-Fe$_{2}$O$_{3}$ nanoparticles were used as the support to immobilize Au or Pd nanoparticles, producing Au/α-Fe$_{2}$O$_{3}$ or Pd/α-Fe$_{2}$O$_{3}$ nanoparticles. The as-prepared α-Fe$_{2}$O$_{3}$ nanocatalyst exhibited high selectivity towards cyclohexanone and cyclohexanol for catalyzing cyclohexane oxidation with O$_{2}$ at 150°C.
Starting Page	1502
Ending Page	1508
Page Count	7
File Format	PDF
ISSN	16747291
Journal	Science in China Series B: Chemistry
Volume Number	53
Issue Number	7
e-ISSN	18622771
Language	English
Publisher	SP Science China Press
Publisher Date	2010-07-31
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	chitosan mesoporous nanoparticles α-Fe$_{2}$O$_{3}$ cyclohexane oxidation Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Chemistry

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