FCC catalysts with different zeolite crystallite sizes: acidity, structural properties and reactivity
FCC catalysts with different zeolite crystallite sizes: acidity, structural properties and reactivity
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DOI：
10.1016/j.apcata.2004.03.042
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发表时间：
2004-08
影响因子：
5.5
通讯作者：
G. Tonetto;J. Atias;H. Lasa
中科院分区：
文献类型：
--
作者：
G. Tonetto;J. Atias;H. Lasa
本文研究了两种平均粒径为60μm的FCC催化剂的总酸度、氨脱附能、比表面积、Brönsted酸中心和刘易斯酸中心的相对含量、晶粒尺寸和颗粒尺寸以及粒度分布。这些催化剂的表征是相关的，因为它们应用于测试在新型CREC提升管模拟器中的单独研究[Ind.Eng.Chem.Res.42（2003）4162]中开发的对总催化裂化速率的煤岩内扩散传输影响的程度。
Two FCC catalysts with a 60μm average size, prepared with different crystallite sizes (0.4 and 0.9μm), are studied in terms of total acidity, energy of ammonia desorption, specific surface area, relative amount of Brönsted and Lewis acid sites, crystallite and particle size, and micropore size distribution. Characterization of these catalysts is relevant in view of their application to test the extent of intracrystallite diffusive transport influence on the overall catalytic cracking rates as developed, in separate studies [Ind. Eng. Chem. Res. 42 (2003) 4162] in a novel CREC Riser Simulator.