TY - JOUR
T1 - Novel synthesis of LaH2 and La2O3 through mechanochemistry and sintering
AU - Herbirowo, Satrio
AU - Pramono, Andika Widya
AU - Hendrik, Hendrik
AU - Nugraha, Heri
AU - Puspasari, Vinda
AU - Imaduddin, Agung
AU - Fatah, Martin C.
AU - Sulistiyo, Eko
AU - Yuwono, Akhmad Herman
N1 - Funding Information:
This research was supported by The Indonesia Endowment Funds for Education (LPDP)– Ministry of Finance Indonesia grant. The authors acknowledge the facilities, scientific and technical support from Advanced Materials Characterization Laboratories KST B.J. Habibie – PUSPIPTEK Tangerang Selatan through E-Layanan Sains (ELSA), National Research and Innovation Agency (BRIN). This research was funded by Indonesia Endowment Fund for Education (LPDP), Ministry of Finance of Republic of Indonesia.
Publisher Copyright:
© 2023
PY - 2023/10
Y1 - 2023/10
N2 - Some hydrogen storage materials have been created by a mechanochemical method utilizing ball milling and hydrogen gas. This study developed a novel method for employing hydrogen gas in a ball milling process followed by sintering to dissociate La(OH)3 into La2O3 and produce LaH2. This study aimed to sinter and mill La(OH)3 in a planetary ball with hydrogen, determine the underlying sub-reaction pathways, and characterize the resultant products. The materials characterization was performed through XRD, PSA, DSC/TGA, and SEM-EDS. The rate of hydrogen pressure decrease during ball milling was from 0.0037 to 0.0049 bar/h. The longer the ball milling time, the higher the amount of LaH2. The resulting intermediate compounds after ball milling were LaH2, La, and H2O2, whose composition variations depended upon the initial hydrogen pressure and milling time. LaH2 and La2O3 were the final products following sintering, whose compositions varied depending on the intermediate compounds and their susceptibility to oxygen.
AB - Some hydrogen storage materials have been created by a mechanochemical method utilizing ball milling and hydrogen gas. This study developed a novel method for employing hydrogen gas in a ball milling process followed by sintering to dissociate La(OH)3 into La2O3 and produce LaH2. This study aimed to sinter and mill La(OH)3 in a planetary ball with hydrogen, determine the underlying sub-reaction pathways, and characterize the resultant products. The materials characterization was performed through XRD, PSA, DSC/TGA, and SEM-EDS. The rate of hydrogen pressure decrease during ball milling was from 0.0037 to 0.0049 bar/h. The longer the ball milling time, the higher the amount of LaH2. The resulting intermediate compounds after ball milling were LaH2, La, and H2O2, whose composition variations depended upon the initial hydrogen pressure and milling time. LaH2 and La2O3 were the final products following sintering, whose compositions varied depending on the intermediate compounds and their susceptibility to oxygen.
KW - Ball milling
KW - LaO
KW - LaH
KW - Mechanochemistry
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=85168378273&partnerID=8YFLogxK
U2 - 10.1016/j.sajce.2023.08.004
DO - 10.1016/j.sajce.2023.08.004
M3 - Article
AN - SCOPUS:85168378273
SN - 1026-9185
VL - 46
SP - 182
EP - 195
JO - South African Journal of Chemical Engineering
JF - South African Journal of Chemical Engineering
ER -