Abstract

Four samples of ZSM-12 zeolite (MTW structural type) synthesized using various template types were tested as catalysts in m-xylene isomerization. The functionality of the catalysts was examined using solid-state ²⁷Al NMR spectroscopy, NH₃–TPD, and IR spectroscopy of adsorbed pyridine. The effects of the crystallite size, acidity, and phase purity of the zeolites on the composition of the reaction products were investigated. The template used for the synthesis was found to affect the physicochemical properties and catalytic activity of the zeolites.

中文翻译：

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MTW沸石微晶形态对间二甲苯异构化产物形成的影响

摘要

测试了使用各种模板类型合成的四个 ZSM-12 沸石（MTW 结构类型）样品作为间二甲苯异构化的催化剂。使用固态²⁷ Al NMR 光谱、NH ₃ -TPD 和吸附吡啶的 IR 光谱检查催化剂的功能。研究了沸石的微晶尺寸、酸度和相纯度对反应产物组成的影响。发现用于合成的模板会影响沸石的物理化学性质和催化活性。