Journal of Nanomaterials / 2013 / Article / Tab 4

Research Article

Extraction of Nanosized Cobalt Sulfide from Spent Hydrocracking Catalyst

Table 4

Data used for the simulation of the cobalt oxalate sulfide intermediate.

Structure Name Energy (KJ/mol) Simulated visible absorption Wavelength

471210.table.004aCarboxy arbonyloxy mercapto (cobalt intermediate)−1188.7 582.49 nm
471210.table.004bCobalt oxalate −919.04 382.84 nm
471210.table.004cCobalt sulfide −1911.836

The red shifted wavelength of the intermediate indicates that it is responsible for the change in color from violet to red.