首页> 外国专利> SPHEROIDAL ALUMINA PARTICLES WITH IMPROVED MECHANICAL STRENGTH HAVING A MACROPOROUS MEDIAN DIAMETER IN THE RANGE 0.05 TO 30uM

SPHEROIDAL ALUMINA PARTICLES WITH IMPROVED MECHANICAL STRENGTH HAVING A MACROPOROUS MEDIAN DIAMETER IN THE RANGE 0.05 TO 30uM

机译:机械强度提高的球状氧化铝颗粒的宏观中值直径在0.05至30uM之间

摘要

The present invention concerns spheroidal alumina particles characterized by a BET specific surface area in the range 150 to 300 m2/g, a mean particle diameter in the range 1.2 to 3 mm and a particle diameter dispersion, expressed as the standard deviation, not exceeding 0.1, a total pore volume, measured by mercury porosimetry, in the range 0.50 to 0.85 mL/g, a degree of macroporosity within a particle of less than 30%, and in which the dispersion of the diameters of the macropores, expressed as the ratio D90/D50, does not exceed 8. The invention also concerns processes for the preparation of said particles as well as catalysts comprising said particles as a support, and their use in catalytic hydrocarbon treatment processes, in particular in a catalytic reforming process.
机译:本发明涉及球形氧化铝颗粒,其特征在于BET比表面积为150至300m2 / g,平均粒径为1.2至3mm,粒径分散度以标准偏差表示,不超过0.1。 ,通过汞孔隙率法测量的总孔体积在0.50至0.85mL / g的范围内,颗粒内的大孔度小于30%,并且其中大孔直径的分散度表示为比率D90 / D50不超过8。本发明还涉及所述颗粒以及包含所述颗粒作为载体的催化剂的制备方法,以及它们在催化烃处理过程中,特别是在催化重整过程中的用途。

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