1. Preparation procedure to obtain iron nanopowder under non-isothermal conditions
- Author
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Tien Hiep Nguyen, Van Minh Nguyen, Manh Hung Nguyen, and Vitaly N. Danchuk
- Subjects
kinetics ,iron nanopowder ,non-isothermal condition ,differential-difference method ,activation energy ,Chemistry ,QD1-999 - Abstract
The kinetics for the procedure of preparing iron nanopowder from α-FeOOH by hydrogen reduction under non-isothermal conditions were studied. The reduction of α-FeOOH nanopowder was shown to occur within the temperature range from 180 to 550 °С, with a maximum specific rate value attained at 500 °С. The activation energy for the reduction process α-FeOOH nanopowder was measured to be ~43 kJ/mol, evidencing a mixed reaction mode. Performing the reduction of α-FeOOH at 500 °С accelerated the process while ensuring the required properties of the product obtained. The Fe nanoparticles thus prepared were of rounded shape, the size ranging from 70 to 100 nm.
- Published
- 2021
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