null检测 | 多环芳香烃在的HSAPO – 34經甲醇制烯烃催化形成-上海漾盟仪器有限公司

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In several recent papers [1–5] we have shown that cyclic organic species are part of the active sites for methanol-toolefin (MTO) catalysis on microporous solid acids [6,7]. On zeolite HZSM-5 these “reaction centers” are either methylsubstituted cyclopentenyl carbenium ions or methylbenzenes [2]. On the silico-aluminophosphate acid catalyst HSAPO-34 [7], the reaction centers are methylbenzenemolecules [3,5], and we cannot rule out the possibility that other types of arenes, e.g., methylnaphthalenes, could also be reaction centers. HSAPO-34 has the CHA topology (its 1 nm cages are interconnected through 0.37 nm windows), and aromatic molecules, even benzene, once formed cannot escape

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