Effect of Precipitation pH and Heat Treatment on the Properties of Hydrous Zirconium Dioxide

Influence of the support structure and composition of Ni–Cu-based catalysts on hydrogen production by methanol steam reforming

“…[37]. Zirconium hydroxide was synthesized by deposition of zirconium oxynitrate solution (99% ALDRICH) with concentrated solution of hydroxyl ammonium at a constant pH 9.…”

Structure of nanoparticles in the ZrO2-Y2O3 system, as obtained under hydrothermal conditions

“…Due to the presence of several polymorphic modifications [1][2][3][4] zirconium dioxide is of interest as a model for studying the effect of the synthesis methods and parameters on the formation of nanocrystals with different structure [5][6][7][8][9][10][11][12][13][14][15]. Zirconium dioxide based nanomaterials with various structures, morphologies, and particle size parameters have a wide range of applications [16][17][18][19][20][21][22][23][24][25][26][27], which makes the above studies relevant from a practical point of view as well.…”

Synthesis and study of mesoporous xerogels and nanopowders of a metastable solid solution 97ZrO2–3Y2O3 for the fabrication of catalyst substrates

“…6a) is lower than that for the xerogel obtained in an alkaline medium at pH 9 (Fig. 6b), which must be related to the fact that a large number of OH groups are contained on the surface of the Zr and Y atoms [15]. The exothermic effects on the DTA curves corre spond to the crystallization of the metastable cubic phase of the solid solution (ZrO 2 ) 0.97 (Y 2 O 3 ) 0.03 (c' ZrO 2 ) (Fig.…”