Mayenite (12CaO·7Al₂O₃) is a mesoporous calcium aluminum oxide, with a characteristic crystalline structure. The framework of mayenite is composed of interconnected cages with a positive electric charge per unit cell that includes two molecules [Ca₂₄Al₂₈O₆₄]⁴⁺, and the remaining two oxide ions O²⁻, often labelled “free oxygen”, are trapped in the cages defined by the framework. Starting from mayenite structure several derivatives have been prepared through advanced synthetic protocols by free oxygen substitution with various anions. Mayenite and its derivates have been intensively investigated in many applications which include catalysis (oxidation and reduction, ammonia synthesis, pinacol coupling), environmental sensors and CO₂ sorbent materials. In this review, we summarize our recent results on the main applications of mayenite and its derivatives.

Mayenite (12CaO·7Al ₂ O ₃ ) 是一种介孔钙铝氧化物，具有特征晶体结构。钙铝石的骨架由相互连接的笼组成，每个晶胞带有正电荷，包括两个分子 [Ca ₂₄ Al ₂₈ O ₆₄ ] ⁴⁺和其余两个氧化物离子 O ^2-，通常被标记为“游离氧”，被困在框架定义的笼子里。从钙铝石结构开始，通过先进的合成方案，通过用各种阴离子取代游离氧，制备了几种衍生物。钙铝石及其衍生物已在许多应用中得到深入研究，包括催化（氧化和还原、氨合成、频哪醇偶联）、环境传感器和 CO ₂吸附剂材料。在这篇综述中，我们总结了我们最近关于钙铝石及其衍生物主要应用的结果。