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Characterization and Catalytic Performance of Niobic Acid Dispersed over Titanium Silicalite
Joint Authors
Prasetyoko, Didik
Ramli, Zainab
Endud, Salasiah
Nur, Hadi
Source
Advances in Materials Science and Engineering
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-09-25
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Niobic acid, Nb2O5⋅nH2O, has been supported on the titanium silicalite by impregnation method.
The obtained materials were characterized by X-ray diffraction, infrared, and ultra-violet—visible diffuse reflectance spectroscopy, temperature programmed reduction, pyridine adsorption, and field emission scanning electron microscopy techniques.
It was demonstrated that the tetrahedral titanium species still retained after impregnation of niobic acid.
The results revealed that niobium species interacted with hydroxyl groups on the surface of TS-1.
The niobium species in the catalysts are predominantly polymerized niobium oxides species or bulk niobium oxide with the octahedral structure.
All catalysts showed both Brønsted and Lewis acid sites.
The catalysts have been tested for epoxidation of 1-octene with aqueous hydrogen peroxide.
It was found that the presence of niobic acid in the catalysts enhanced the rate of the formation of epoxide at the initial reaction time.
Diol as a side product was also observed due to the acidic properties of the catalysts.
American Psychological Association (APA)
Prasetyoko, Didik& Ramli, Zainab& Endud, Salasiah& Nur, Hadi. 2008. Characterization and Catalytic Performance of Niobic Acid Dispersed over Titanium Silicalite. Advances in Materials Science and Engineering،Vol. 2008, no. 2008, pp.1-12.
https://search.emarefa.net/detail/BIM-464509
Modern Language Association (MLA)
Prasetyoko, Didik…[et al.]. Characterization and Catalytic Performance of Niobic Acid Dispersed over Titanium Silicalite. Advances in Materials Science and Engineering No. 2008 (2008), pp.1-12.
https://search.emarefa.net/detail/BIM-464509
American Medical Association (AMA)
Prasetyoko, Didik& Ramli, Zainab& Endud, Salasiah& Nur, Hadi. Characterization and Catalytic Performance of Niobic Acid Dispersed over Titanium Silicalite. Advances in Materials Science and Engineering. 2008. Vol. 2008, no. 2008, pp.1-12.
https://search.emarefa.net/detail/BIM-464509
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464509