Abstract Hierarchical HZSM-5 supported Cr 2 O 3 obtained through tetrapropylammonium hydroxide (TPAOH) treatment and subsequent loading of Cr 2 O 3 exhibited synergistically catalytic performance toward the transformation of liquefied petroleum gas (LPG) to propylene and ethylene due to increase in mesoporosity, weak-acid amount and strong-acid strength. Over 10%Cr 2 O 3 /HZ5-96 with mesoporosity of 51.4% and moderate ratio of weak-acid amount/strong-acid amount of 4, the selectivity of propylene and ethylene reached 58.91% at 600 °C. Furthermore, the formation of methane and heavier C 5 + was dramatically reduced. This provides a clue for catalyst design to the selective transformation of mixed light hydrocarbons.

中文翻译：

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Cr 2 O 3 与分级HZSM-5协同作用对LPG向丙烯和乙烯转化的影响

摘要 通过四丙基氢氧化铵 (TPAOH) 处理和随后负载 Cr 2 O 3 获得的分级 HZSM-5 负载的 Cr 2 O 3 表现出协同催化性能，由于介孔率增加，液化石油气 (LPG) 转化为丙烯和乙烯，弱酸量和强酸强度。Cr 2 O 3 /HZ5-96含量超过10%，介孔率为51.4%，弱酸量/强酸量比为4适中，600℃时丙烯和乙烯的选择性达到58.91%。此外，甲烷和较重的 C 5 + 的形成显着减少。这为混合轻烃选择性转化的催化剂设计提供了线索。