Iron oxide synthesis using a continuous hydrothermal and solvothermal system
Source abstract
Abstract
Abstract Iron oxide synthesis via a continuous hydrothermal and solvothermal reaction were studied. In the hydrothermal synthesis, fine α-Fe 2 O 3 (hematite) particles were obtained at 250–420 °C and 30 MPa. The α-Fe 2 O 3 crystals were grown in sub-critical water via a dissolution and precipitation process. The growth of α-Fe 2 O 3 crystals in supercritical water was suppressed due to the rather low solvent power of water. Crystalline Fe 3 O 4 was obtained as the temperature was raised above the supercritical state in the solvothermal preparation. Isopropanol (IPA) was oxidized in acetone which provided a reducing atmosphere. Acetone molecule adsorption onto the Fe 3 O 4 particle surface inhibited crystallite growth.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Iron oxide chemistry and applications · Subcritical and Supercritical Water Processes · Environmental remediation with nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (11)
Show source-provided references
1. Rapid and continuous hydrothermal crystallization of metal oxide particles in supercritical water10.1111/j.1151-2916.1992.tb04179.x ↗
2. Hydrothermal synthesis of metal oxide fine particles at supercritical conditions10.1021/ie0003279 ↗
3. Continuous hydrothermal crystallization of α-Fe2O3 and Co3O4 nanoparticles10.1557/JMR.2003.0053 ↗
4. Supercritical water synthesis and deposition of iron oxide (α-Fe2O3) nanoparticles in activated carbon10.1016/j.supflu.2006.02.004 ↗
5. Supercritical hydrothermal synthesis of organic–inorganic hybrid nanoparticles10.1007/s10853-006-7458-y ↗
6. Chemical equilibria and particle morphology of boehmite AlOOH in sub and supercritical water10.1016/S0378-3812(99)00118-1 ↗
7. Effects of hydrothermal synthetic conditions on the particle size of γ-AlO(OH) in sub and supercritical water using a flow reaction system10.1016/j.matchemphys.2005.03.047 ↗
8. Effects of solvents on properties of nanocrystalline hydroxyapatite produced from hydrothermal process10.1016/j.jeurceramsoc.2005.09.111 ↗
9. Preparation of Fe3O4 fine particles through a solvothermal process10.1016/0167-577X(94)90102-3 ↗
10. Study on supercritical hydrothermal synthesis of CoFe2O4 nanoparticles10.1016/j.supflu.2007.03.004 ↗
11. Socrates · 2001