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Paper Information

Journal:   JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN   FALL 2007 , Volume 18 , Number 4; Page(s) 303 To 309.
 
Paper: 

SYNTHESIS OF BINARY TI-SI MIXED OXIDES NANOPARTICLES WITH RUTILE STRUCTURE AS SELECTIVE CATALYST FOR EPOXIDATION OF ALKENES

 
 
Author(s):  FAKHROUEIAN Z., FARZANEH FAEZEH*, GHANDI M.
 
* DEPARTMENT OF CHEMISTRY, ALZAHRA UNIVERSITY, VANAK, TEHRAN, ISLAMIC REPUBLIC OF IRAN
 
Abstract: 

The nanoparticles of Ti-Si mixed oxides (NTSO) with Rutile structure were prepared by sol-gel method in a mixture of alcohol and water as solvent. The solid product was characterized by XRD, FTIR, SEM, TEM, UV, TGA and laser Raman spectroscopy. The catalytic activity of NTSO (5-10nm) was investigated in the epoxidation of cis stilbene, trans stilbene, and norbornene by using oxidants such as tert-butylhydroperoxide (TBHP), molecular oxygen (O2)/isobutyraldehyde (IBA) and hydrogen peroxide (H2O2). It was found that epoxides of trans-stilbene and norbornene were formed quantitatively with the green H2O2 oxidant during 12h.

 
Keyword(s): EPOXIDATION, ALKENES, TI-SI MIXED OXIDES, NANOPARTICLES, HETEROGENEOUS CATALYSIS
 
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