SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hatari
Cobalt Molybdate Catalyst: Acid-Washed Alumina Impregnated to 6.5 % Molybdenum and 0.8 % Cobalt, Pelleted (Hoog, Shell, US 2,608,521)
A catalyst for taking sulphur out of oils with hydrogen: alumina carrying a little molybdenum and cobalt. Shell's 1948 recipe cleans the alumina with acid, soaks it in a solution of the two salts, then presses it into small pellets and heats them under nitrogen.
Result: 3 x 5 mm pellets with 6.5 parts molybdenum and 0.8 part cobalt to 100 parts alumina. In Shell's test they desulphurised a gas oil 88 % at 375 °C and 50 atmospheres, for hundreds of hours without regeneration.
Source: Hoog, US 2,608,521 (Shell, 1952). Not given: the amounts of the two salts, drying temperature. Shell used a commercial activated alumina. Danger: hydrochloric acid burns. Picture drawn by Youblob.
Juu
3 days
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
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
Alumina: Alum Precipitated with Water of Ammonia and Calcined, Ure 1839
na Charlie
Kemia
15
0
0
0
0
0
Activated Alumina: Aluminium Trihydrate Heated at 350 °C While Hot Air Carries the Steam Away (Derr, Alcoa, US 2,015,593)
na Charlie
Viwandani
2
0
0
0
0
0
Hatari
Ammonium Molybdate: Roasted Molybdenite Dissolved in Strong Ammonia (Gin 1907)
na Charlie
Viwandani
14
0
0
0
0
0
Hatari
Cobalt Nitrate: Cobalt Oxide Dissolved in Nitric Acid (Thorpe 1912)
na Charlie
Viwandani
2
0
0
0
0
0
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.