Ushirikiano
SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hatari
Cerium: Anhydrous Cerous Chloride Electrolysed in an Iron Pipe at 200 Amperes (Hirsch, 1911)
The hard part of making cerium is a chloride with no water and no oxide in it. Hirsch boiled purified cerium ammonium nitrate down with hydrochloric acid for weeks, dried it in a stream of dry hydrogen chloride, then electrolysed the melt in a plain iron pipe, which served as the cathode.
Result: a fused ingot of cerium metal (580 g in one run), about 98 % cerium.
Source: A. Hirsch, The Preparation and Properties of Metallic Cerium, Trans. Am. Electrochem. Soc. 20 (1911), pp. 65-85. Chlorine comes off the anode; hydrogen chloride is corrosive; the original seal used asbestos. Picture: Figs. 7 and 8 of the paper.
Juu
4 weeks
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
IngiaMchoro huu unatengeneza
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.