一类新型碱激发胶凝材料催化剂的研究进展

Research Progresses of New Type Alkali-activated Cementitious Material Catalyst

碱激发固体铝硅酸盐胶凝材料是先进无机非金属材料的前瞻性研究领域之一,本文对碱激发铝硅酸盐胶凝材料的分类、制备工艺、形成机理以及潜在的应用前景进行了综述;详尽地论述了碱激发胶凝材料基新型催化剂的最新研究进展,综合分析了碱激发胶凝材料作为结构材料研究的局限性,展望了该材料作为新型催化材料的发展动态。

Alkali-activated solid aluminosilicate-based cementitious material is one of prospective research fields of advanced inorganic non-metallic materials. Its classification, preparation process, formation mechanism, and potential applications are reviewed in this paper. It is considered that its microstructure and chemical characteristics intensively depend on the raw materials and synthesis conditions. Geopolymers derive from alkali-activated metakaolin or fly ash with low calcium content, while the amorphous calcium silicate hydrate（C-S-H） gels root in the chemical-activated solid wastes of granular blast furnace slag, steel slag and other solid aluminosilicate wastes with high calcium contents. Even though durability of alkali-activated cementitious materials as the building structure materials has been widely studied in the past decades, the intrinsic brittleness still restricts their applications in the field of civil and building engineering. Therefore, exploration of a new applied approach is by far the best option. In recent years, many researches report that the alkali-activated cementitious materials are used as novel precursors and catalysts for some kinds of heterogeneous reactions. The latest research progresses on alkali-activated cementitious material-based catalysts are discussed.