Abstract
Magnesium-substituted nickel phosphates were prepared from phosphoric acid, nickel nitrate, and magnesium nitrate solutions. The obtained precipitates and their thermal products were investigated in terms of chemical composition, particle shape and size distribution, and specific surface area. The acidic properties were estimated from ammonia-temperature programmed desorption curves and the adsorption of trimethylamine. Magnesium-substituted nickel phosphates had larger specific surface areas and higher adsorption ratios of trimethylamine than did unified nickel and magnesium phosphates.
