Protocol full text hidden due to copyright restrictions
Open the protocol to access the free full text link
Protocol full text hidden due to copyright restrictions
Open the protocol to access the free full text link
Example 2
A reaction solution was prepared by dissolving manganese (II) acetylacetonate acetate (Mn(CH3COCHCOCH2)2) and Cobalt (II) acetate tetrahydrate (Co(CH3COO)2.4H2O) in a mixture of oleic acid (OLAC) and 1-octadecene. The reaction solution had a molar ratio of 4.5 mol OLAC: mol Metal (Mn+Co) and a combined metal concentration of 0.9 mmol Mn/mL of 1-octadecene. The reaction solution was heated to a temperature of 130° C. under flowing nitrogen and held at 130° C. for 60 minutes. The mixture was then heated under an inert atmosphere of nitrogen at a rate of 10° C./min to reflux (320° C.). The reaction mixture was held at 320° C. for 120 min. The reaction mixture was cooled under an inert atmosphere using a flow of RT air to cool the exterior of the reaction vessel. The nanoparticles were collected and purified via repeated washing and decanting/centrifugation steps using hexane as a hydrophobic solvent, and isopropanol as a counter solvent. The purified nanoparticles were dispersed in toluene. TEM images illustrated that the nanoparticles are rod-shaped, have an average length of 64.1 with a length distribution of 15% and an average width of 11.7 nanometers with a width distribution of 13%.
Example 3
The catalyst C is prepared using the same support as that used for the catalyst A, and by carrying out the same steps as those performed to obtain the catalyst A, the only difference being that the calcining step is carried out in air at 400° C. for 4 hours in a traversed bed with an air velocity of 3 litres of air/gram of catalyst and per hour (l/g·h).
The final catalyst C has a total cobalt content of 20% by weight (the content of Co present in the spinel phase being included), i.e. 15% by weight of cobalt as active phase.
Example 2
The catalyst B is prepared using the same support as that used for the catalyst A, and by carrying out the same steps as those performed to obtain the catalyst A, the only difference being that the calcining step is carried out in air at 400° C. for 4 hours in a traversed bed with an air velocity of 2 litres of air/gram of catalyst and per hour (l/g·h).
The final catalyst B has a total cobalt content of 20% by weight (the content of Co present in the spinel phase being included), i.e. 15% by weight of cobalt as active phase.
Example 4
The catalyst D is prepared using the same support as that used for the catalyst A, and by carrying out the same steps as those performed to obtain the catalyst A, the only difference being that the calcining step is carried out in air at 400° C. for 4 hours in a traversed bed with an air velocity of 4 litres of air/gram of catalyst and per hour (l/g·h).
The final catalyst D has a total cobalt content of 20% by weight (the content of Co present in the spinel phase being included), i.e. 15% by weight of cobalt as active phase.