Hierarchical Beta (BEA-H) with intra-crystalline mesoporosity was synthesized by employing a designed template of N(CH₃)₂-C₆H₁₂-N⁺(CH₃)₂-CH₂-(p-C₆H₄)-CH₂-N⁺(CH₃)₂-C₆H₁₂-N(CH₃)₂ [Cl-]₂. Characterization results indicate that BEA-H was crystallized from the outer surface of quasi-spherical particle to the inner part. When it was used as a catalyst for the gas-phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam, BEA-H exhibited a 2.3-fold longer lifetime in comparison to conventional Beta zeolite (BEA-C). The superior catalytic performance of BEA-H is attributed to its hierarchical pore structure and suitable acidity.

通过使用N（CH ₃）₂ -C ₆ H ₁₂ -N ⁺（CH ₃）₂ -CH _2-（pC ₆ H ₄）- CH ₂ -N ⁺（CH ₃）₂ -C ₆ H ₁₂ -N（CH ₃）₂ [Cl-] ₂。表征结果表明，BEA-H从准球形颗粒的外表面到内部结晶。当将其用作环己酮肟气相贝克曼重排成ε-己内酰胺的催化剂时，BEA-H的寿命比传统的Beta沸石（BEA-C）长2.3倍。BEA-H的优异催化性能归因于其分级的孔结构和适当的酸度。