Preparation procedure to obtain iron nanopowder under non-isothermal conditions

Журнал Белорусского государственного университета: Химия

Van MinhNguyen¹  Manh Hung Nguyen²  Vitaly N.Danchuk³  Tien Hiep Nguyen⁴ 

[1] Le Quy Don Technical University, 236 Hoang Quoc Viet Street, Hanoi 100000, Vietnam;Institute of Technology, 3 Cau Vong Street, Hanoi 100000, Vietnam;Le Quy Don Technical University, 236 Hoang Quoc Viet Street, Hanoi 100000, Vietnam;National University of Science and Technology «MISiS», 4 Leninsky Avenue, Moscow 119049, Russia;

关键词: kinetics;    iron nanopowder;    non-isothermal condition;    differential-difference method;    activation energy;   

DOI  :  10.33581/2520-257X-2021-1-28-35

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown