Electrosynthesis of cerium hexaboride by the molten salt technique

• Published in: Journal of crystal growth Vol. 310; no. 14; pp. 3376 - 3379
• Main Authors: Amalajyothi, K., Berchmans, L. John, Angappan, S., Visuvasam, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2008; Elsevier
• Subjects: A1. SEM; A1. XRD; A2. Molten salt technique; B1. Cerium hexaboride; Chemistry; Electrochemistry; Exact sciences and technology; General and physical chemistry; Kinetics and mechanism of reactions; B1. Cerium hexaboride; A1. XRD; A1. SEM; 75.75.ta; 81.07.−b; 81.15.Pq; A2. Molten salt technique; 61.05.cp; Boron oxide; High density; Cerium; Boron; Chemical synthesis; Current density; Scanning electron microscopy; Lithium fluoride; Cerium boride; Laser induced fluorescence; X ray diffraction; Molybdenum; Crucible; Molten salt; Electrolyte; Graphite; 81.07.-b; Electrochemistry; Cerium chloride
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2008.04.026

Molten salts are well thought-out as the incredibly promising medium for chemical and electrochemical synthesis of compounds. Hence a stab has been made on the electrochemical synthesis of CeB 6 using molten salt technique. The electrolyte consisted of lithium fluoride (LiF), boron trioxide (B 2O 3) and cerium chloride (CeCl 3). Electrochemical experiments were carried out in an inconal reactor in an argon atmosphere. Electrolysis was executed in a high-density graphite crucible, which doles out as the electrolyte clutching vessel as well as the anode. The cathode was made up of a molybdenum rod. The electrolysis was carried out at 900 °C at different current densities intended for the synthesis of CeB 6 crystals. After the electrolysis, the cathode product was removed and cleaned using dilute HCl solution. The crystals were scrutinized by X-ray diffraction (XRD) to make out the phase and the purity. It has been observed that CeB 6 crystals are synthesized at all current densities and the product has traces of impurities.