Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate

Bi, Yunfei, Zeng, Shuangqin, Li, Dadong and Nie, Hong Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate Chemical Papers, Vol.64, No. 1, 2010, 40-45

Document type: Článok z časopisu / Journal Article
Collection: Chemical papers  

Author(s) Bi, Yunfei
Zeng, Shuangqin
Li, Dadong
Nie, Hong
Title Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate
Journal name Chemical Papers
Publication date 2010
Year available 2010
Volume number 64
Issue number 1
ISSN 0366-6352
Start page 40
End page 45
Place of publication Poland
Publisher Versita
Collection year 2010
Language english
Subject 290000 Engineering and Technology
290600 Chemical Engineering
Abstract/Summary Ammonium dioxothiotungstate was synthesized using different tungsten sources and characterized in detail by powder X-ray diffraction, energy dispersive X-ray spectrometry, transmission electron microscopy, nitrogen adsorption, and temperature-programmed sulfidation. It was found that tungsten oxide nanobelts are superior to ammonium metatungstate as tungsten source for the synthesis of ammonium dioxothiotungstate due to a time-consuming aging step being excluded from the synthesis route. Moreover, detailed characteristic data reveal that, when tungsten oxide nanobelts are used, the physical and chemical properties of the resulting ammonium dioxothiotungstate including particles size, specific surface area, and sulfidation pattern were improved. Also, the hydrodesulfurization measurements showed higher catalytic activity and balanced selectivity of the resulting ammonium dioxothiotungstate.
 
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