Synthesis, characterisation and behaviour of Co/hydroxyapatite catalysts in the oxidation of 1,2-dichloroethane

Catalytic oxidation of 1,2-dichloroethane over three-dimensional ordered meso-macroporous Co3O4/La0.7Sr0.3Fe0.5Co0.5O3: Destruction route and mechanism

“…01-089-1267) is well maintained, indicating the su-perior structure stability and resistance to chlorine poisoning of the 10Co3O4/3DOM LSFCO catalyst. Three new distinctly diff raction peaks are observed over the spent 10Co3O4/3DOM LSFCO sample compared with the fresh catalyst, which ascribes to the adsorption of chlorine species on the surface of cobalt sites [52]. It is known that the de-struction of chlorinated compounds would result in the surface cobalt oxides sites adsorbing chlorine but the detected chlorine species don't reduce the conversion of 1,2-DCE, indicating the catalyst possesses good resistance to chlorine poisoning.…”

Highly-efficient hydroxyapatite-supported nickel catalysts for dry reforming of methane

“…In fact, hydroxyapatite has the ability to undergo cation and anion exchanges, which can improve its surface properties [19e21]. Also, its acid-base properties could be controlled by modifying the calcium to phosphorous ratio (Ca/P) [22]. Ca-HA is also thermally stable, decomposing only at temperatures above 1000 C and no sintering is observed under 700 C [23].…”

Effect of Microwave Irradiation Parameters on Co/Fe Hydrotalcite Nanocatalysts for the Total Oxidation of VOCs

“…The Co 2p XPS spectra of the both catalysts Co 4 Fe 2 ‐HT500 and MW500–40W showed the presence of two components due to the spin–orbit coupling of the Co 2p 3/2 and Co 2p 1/2 states with satellite peaks indicating that cobalt is present in mixed oxidation states , . The signal Co 2p 3/2 consists of a main photoemission peak located at a binding energy of 780 eV for Co 2+ and 779 eV for Co 3+ (Figure b) and two satellite peaks appearing at about 784.9 and 789.4 eV and corresponding to the Co 3+ ions , . The Co 2p 1/2 signal has three components located at 796 eV for Co 2+ and 794 eV for Co 3+ and a satellite peak corresponding to Co 2+ ions at about 803 eV.…”