| abstract |
The invention relates to a preparation method of a light gasoline olefin-reducing-upgrading catalyst, which adopts a hydrothermal synthesis method. The preparation method at least comprises the following steps: first, mixing a silicon-containing source solution and an aluminum-containing source solution to form a mixed solution, wherein, The composition of the silicon-containing source solution is: silicon source, template agent, nickel source and water; the composition of the aluminum-containing source solution is: silicon source, aluminum source, template agent, alkali metal, magnesium source, gallium source and water ; In the mixed solution, based on the corresponding oxides, the molar ratio of each component is: silicon source: template agent: aluminum source: alkali metal: nickel source: magnesium source: gallium source: water is 1:0.5‑0.9:0.02 -0.1: 0.1-0.5: 0-0.03: 0-0.1: 0.005-0.015: 12-20; then, the mixed solution is subjected to hydrothermal crystallization, post-treatment, and calcination to obtain in-situ doped gallium and nickel-containing solutions Or/and Magnesium Hierarchical Beta Molecular Sieve Catalyst. The invention also relates to a light gasoline olefin reducing-upgrading catalyst and a light gasoline olefin reducing-upgrading method. |