| abstract |
The invention discloses a fly ash-based catalytic cracking catalyst and a preparation method thereof. The method mainly comprises the following steps: 1) and sieving the magnetic beads of the fly ash with a 50-200 mesh sieve. 2) Mixing the fly ash magnetic beads, the magnesium-containing compound and the auxiliary agent according to a certain mass ratio, placing the mixture in a plasma ball mill, and carrying out ball milling for 0.5-5h under the excitation voltage of 5-8kV to obtain the catalyst. Catalyst with surface alkaline constant K b And an acidity constant Ka of 1.2 to 1.8: 1, and has a porous channel structure with a pore size of 0.4-25 nm. The method takes bulk solid waste fly ash as a main raw material, prepares the ferrimagnesium spinel material as a catalyst for catalytic cracking of biomass by a high-energy plasma ball mill, has the advantages of simple preparation process, high catalytic efficiency, easy large-scale production and the like, and simultaneously achieves the purpose of turning waste into wealth. |