Forced hydrolysis of FeCl3 solutions in the presence of guanylurea phosphate

2022 ◽  
Vol 634 ◽  
pp. 128047
Author(s):  
Marko Robić ◽  
Mira Ristić ◽  
Stjepko Krehula ◽  
Svetozar Musić
Keyword(s):  
Forced Hydrolysis ◽  
Hydrolysis Of

Formation of hybrid colloids by suspension polycondensation in the presence of hydrophilic block copolymers

2002 ◽  
Vol 726 ◽  
Author(s):  
Corine Gerardin ◽  
Valérie Buissette ◽  
François Gaudemet ◽  
Olivier Anthony ◽  
Nicolas Sanson ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Colloidal Suspensions ◽  
Surface Charges ◽  
Inorganic Particles ◽  
Hydrous Oxides ◽  
Stabilization Phase ◽  
Metal Ratio ◽  
Forced Hydrolysis ◽  
Hydrolysis Of

AbstractDouble hydrophilic block copolymers were used to control the growth of inorganic particles and directly prepare hybrid colloidal suspensions. Colloids of metal hydrous oxides were obtained by forced hydrolysis of metal ions in presence of the copolymers. The block copolymers contain a metal-complexing polyelectrolyte block and a stabilizing neutral block. The role of the first block is to ensure a controlled growth of the inorganic phase, while simultaneously, the second block ensures the colloidal stabilization. Phase diagrams presenting the conditions under which precipitation is inhibited are established. The nanoparticles are then characterized in terms of sizes, morphologies and surface charges. The main parameters controlling the size were identified: the copolymer-to-metal ratio and the metal prehydrolysis ratio. The synthesis steps were characterized. First, a key step of induced micellization of the hydrophilic copolymers leads to hybrid core-shell assemblies. The second step consists in mineralization of the micellar core. The suspension polycondensation leads to hairy particles whose morphologies depend on the nature of the metal and on synthesis parameters.

Forced Hydrolysis vs Self-Hydrolysis of Zinc Acetate in Ethanol and Iso-butanol

2019 ◽  
Vol 3 (9) ◽  
pp. 23-28 ◽  
Author(s):  
Geonel R. Gattorno ◽  
G. Oskam
Keyword(s):  
Zinc Acetate ◽  
Forced Hydrolysis ◽  
Hydrolysis Of
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