| Abstrakt: |
Mixed solid solution spinels impregnated with cerium, Ce/MgO·MgAl2-xMxO4(MFe, V, Cr, x≤0.4), were studied for controlling the SOxemission from the fluid catalytic cracking (FCC) regenerator. An insufficient sulfur release problem inherent to the earlier DeSOxcatalyst, Ce/MgO·MgAl2O4, was effectively overcome by incorporating a transition metal into the spinel structure. Studies of the SOxpick-up, temperature profile for the sulfate reduction, the thermal analysis, and the DeSOxcycle test in the batch as well as the automated continuous reactor are discussed to define the role of a transition metal in the mixed spinels for the DeSOxperformance. These advanced DeSOxcatalysts have led to a commercial success for the simultaneous control of SOxand NOxemissions from the FCC regenerator. |
