Synthesis and reactions of metal alkoxides

Mehrotra, R. C.

doi:10.1016/0022-3093(88)90003-8

Cited by 167 publications

(55 citation statements)

References 112 publications

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“…M-OR bonds involved in the barium and titanium alkoxides are expected to be highly polar due to electronegativity nature of the oxygen. 30 Therefore, oxygen atoms coordinate to the barium andor titanium atoms, and oligomers of alkoxide,écomplex alkoxides,êare formed. As the alkoxyl group varies from -OC 2 H 5 to -OC 8 H 17 , the complex alkoxide should become hydrophobic.…”

Section: Reaction Temperaturementioning

confidence: 99%

Influence of Different Parameters on the Particle and Crystallite Sizes of Barium Titanate Prepared by an Alkoxide Sol-Gel Method

Kobayashi

Tanase

Nagao

et al. 2007

J. Ceram. Soc. Japan

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Barium titanate nanoparticles were synthesized in wateralcohol solutions by the hydrolysis of complex alkoxide precursor that was prepared by reflux of metallic barium and tetraethylorthotitanate in the alcohol. The alcohols employed were ethanol, 1-butanol and 1-octanol, which have different chain lengths. High hydrolysis reaction temperature produced small particles with small crystallite sizes. Particle and crystallite sizes were also dependent on alcohol species. For ethanol, crystallite size increased from 10.3 to 21.0 nm with an increase in water concentration. The crystallite size also increased from 13.0 to 42.9 nm for 1-butanol and from 26.6 to 52.9 nm for 1-octanol, respectively, with an increase in water concentration. Amorphous or low crystallinity products were formed for the 1-butanol and the 1-octanol at high water concentrations.

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Section: Reaction Temperaturementioning

confidence: 99%

Influence of Different Parameters on the Particle and Crystallite Sizes of Barium Titanate Prepared by an Alkoxide Sol-Gel Method

Kobayashi

Tanase

Nagao

et al. 2007

J. Ceram. Soc. Japan

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“…Sol-gel derived films, cursors. Alkoxides are known for almost all transidue to their fine structure and high density, can be tion metals as well as for the rare earth metals [33] sintered at much lower temperatures than those films and are very reactive towards a reagent such as made by conventional ceramic powder processing. water.…”

Section: Chemical Vapor Depositionmentioning

confidence: 99%

Fabrication of thin electrolytes for second-generation solid oxide fuel cells

et al. 2000

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“…7 Electrochemical dissolution of metals in absolute alcohols containing a supporting electrolyte has proved to be a promising synthesis method of metal alkoxides. 8 Many researchers synthesized niobium, zirconium and hafnium alkoxides using electrochemical method. 9,10 High purity tantalum ethoxide is prepared by a combination of electrochemical synthesis and vacuum distillation.…”

Section: Introductionmentioning

confidence: 99%

Anodic Dissolution Behavior of Zirconium in n-Butanol Solutions Containing Bu<sup>n</sup><sub>4</sub>NBr

2016

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Anodic dissolution of zirconium in Bu n 4 NBr-containing n-butanol solutions was investigated using cyclic voltammetry, linear sweep voltammetry and potentiostatic current-time transient and scanning electron microscopy (SEM). Zirconium did not exhibit active dissolution due to passivation in the potential region of 0.2 to 1.2 V vs. SCE. The zirconium dissolution in passive state was under mass transfer control. Pitting corrosion took place as a result of passivity breakdown by Br − anions and the typical steady-state pitting potential was between 1.55-1.60 V vs. SCE in n-butanol solutions containing 0.08 M Bu n 4 NBr. SEM images confirmed the occurrence and the intensification of pits with an increase of potential. Increasing Bu n 4 NBr concentration accelerated the pit nucleation and growth. The reaction order leading to pit nucleation process was 1.0 with respect to bromide anions. The dissolution of zirconium in n-butanol solution produced Zr(OC 4 H 9 ) 4 .

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Synthesis and reactions of metal alkoxides

Cited by 167 publications

References 112 publications

Influence of Different Parameters on the Particle and Crystallite Sizes of Barium Titanate Prepared by an Alkoxide Sol-Gel Method

Influence of Different Parameters on the Particle and Crystallite Sizes of Barium Titanate Prepared by an Alkoxide Sol-Gel Method

Fabrication of thin electrolytes for second-generation solid oxide fuel cells

Anodic Dissolution Behavior of Zirconium in n-Butanol Solutions Containing Bu<sup>n</sup><sub>4</sub>NBr

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