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CN107974274B 一种含磷和含负载金属的MFI结构分子筛及其制备方法 有权

一种含磷和含负载金属的MFI结构分子筛及其制备方法
摘要：
本公开提供了一种含磷和含负载金属的MFI结构分子筛及其制备方法，该分子筛的n(SiO2)/n(Al2O3)大于100；所述分子筛的磷含量为0.1‑5重％；所述分子筛的负载金属含量为0.5‑5重％；所述分子筛的Al分布参数D(Al)满足：0.5≤D(Al)≤0.8；所述分子筛的负载金属分布参数D(M)满足：2≤D(M)≤10；所述分子筛的介孔体积占总孔体积的比例为15‑30体％；所述分子筛的强酸酸量占总酸量的比例为60‑80％，B酸酸量与L酸酸量之比为20‑100。将本公开的含磷和含负载金属的MFI结构分子筛作为活性组元制备催化剂或助剂，在石油烃催化裂化反应中能够提高汽油收率和辛烷值的同时，并可有效降低汽油烯烃含量。
摘要（英）：

The invention discloses a phosphorus-containing and supported-metal-containing MFI structure molecular sieve and a preparation method thereof, wherein the n(SiO2)/n(Al2O3) of the molecular sieve is greater than 100, the phosphorus content of the molecular sieve is 0.1-5 wt%, the supported metal content of the molecular sieve is 0.5-5 wt%, the Al distribution parameter D (Al) of the molecular sieveis more than or equal to 0.5 and is less than or equal to 0.8, the supported metal distribution parameter D (M) of the molecular sieve is more than or equal to 2 and is less than or equal to 10, thevolume of the mesopores of the molecular sieve accounts for 15-30% of the total pore volume, the amount of the strong acid of the molecular sieve accounts for 60-80% of the total acid amount, and a ratio of the acid B to the acid L is 20-100. According to the present invention, with the catalyst or the auxiliary agent prepared by using the phosphorus-containing and supported-metal-containing MFI structure molecular sieve as the active component, the yield and the octane number of gasoline can be improved in the catalytic cracking reaction of petroleum hydrocarbons while the olefin content in gasoline can be effectively reduced.

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