Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate
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Yunfei Bi
,
Shuangqin Zeng
Abstract
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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© 2009 Institute of Chemistry, Slovak Academy of Sciences
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- Fuels obtained by thermal cracking of individual and mixed polymers
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- Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate
- A Raman spectroscopy study on differently deposited DLC layers in pulse arc system
- 1,7′-dimethyl-2′-propyl-1H,3′H-2,5′-bibenzo[d]imidazole as a corrosion inhibitor of mild steel in 1 M HCl
- The role of acidity profile in the nanotubular growth of polyaniline
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- Phase separation in non-ionic surfactant Triton X-100 solutions in the presence of phenol
- Phase formation in sodium dodecylsulfate solutions in the presence of salicylic acid for preconcentration purposes
- Numerical properties of equations involving high-order derivatives of pressure with respect to volume
- Synthesis and characterization of conducting copolymer of (N 1,N 3-bis(thiophene-3-ylmethylene)benzene-1,3-diamine-co-3,4-ethylenedioxythiophene)
- Intercalation of non-aromatic heterocyclic amines into layered zirconium glycine-N,N-dimethylphosphonate
- Kinetics of catalytic Meerwein-Ponndorf-Verley reduction of aldehydes and ketones using boron triethoxide
