학술논문
Mechanochemical synthesis of nanocrystalline nickel-molybdenum compounds and their morphology and application in catalysis: II. Effect of mechanochemical activation parameters-process power density and exposure time-on the composition and structure of nickel-molybdenum compounds
Document Type
Article
Author
Source
Subject
*NICKEL compounds
*NANOCRYSTALS
*MECHANICAL chemistry
*CATALYSIS
*POWER density
*CRYSTAL structure
*MIXTURES
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Language
ISSN
0023-1584
Abstract
The effect of mechanochemical activation parameters-process power density and the time of treatment of a mixture of nickel hydroxocarbonate NiCO · 2Ni(OH) · nHO and ammonium paramolybdate (NH)MoO · 4HO -on the phase composition, specific surface area, and morphology of mechanically activated products at different Ni: Mo atomic ratios was studied. It was found that, at a mechanochemical activation process power density of 6.2 W/g, layered transition metal molybdates (LTM compounds) with different amounts of crystal water were the constituents of the products, whereas the products mechanically activated at a power density of 28.0 W/g contained a mixture of LTM compounds and heteropoly compounds with the Anderson structure regardless of activation time. [ABSTRACT FROM AUTHOR]