Catalytic Cracking of n-Hexane over MeAPOs Molecular Sieves

Li Li Feng; Chong Chen Wang; Xing Yi Qi

doi:10.4028/www.scientific.net/AMR.236-238.1063

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Catalytic Cracking of n-Hexane over MeAPOs Molecular Sieves

Abstract:

Mg-, Zn-, and Cu-substituted aluminophosphate molecular sieves (MeAPO-5 and MeAPO-11) were synthesized by hydrothermal crystallization method. The n-hexane cracking performance over the as-prepared MeAPOs was estimated under different reaction conditions. MeAPO-5 molecular sieves exhibited higher activity for the cracking conversion in the temperature range of 723~823 K than MeAPO-11. The conversion level of n-hexane over MeAPOs with the same topology had the following order: MgAPOs > ZnAPOs > CuAPOs. The cracking results showed that the conversion level of n-hexane increased with increasing reaction temperatures and contact time, and that the first order is determined in the n-hexane concentration.