Micron-Sized Single-Crystal-like CoAPO-5/Carbon Composites Leading to Hierarchical CoAPO-5 with Both Inter- and Intracrystalline Mesoporosity

作者：Sanchez Sanchez Manuel^*; Manjon Sanz Alicia; Diaz Isabel; Mayoral Alvaro; Sastre Enrique

来源：Crystal Growth & Design, 2013, 13(6): 2476-2485.

DOI：10.1021/cg4001768

Commercial mesopores-containing carbon (carbon black BP2000) has been used as crystallization host as well as hard template of intracrystalline mesopores in CoAPO-5 materials prepared with N-methyldicyclohexylamine as specific structure-directing agent. As a result, micrometer-sized AFI-structured terminated-tip (pencil-like) hexagonal prims have been obtained. Despite the appearance of single crystals, the crystals are actually composites formed by a large number of elongated-shape CoAPO-5 and carbon nanodomains. Indeed, the removal of carbon by calcination leaves an inorganic Co-doped AlPO4-based material having a complex hierarchical pore system, formed by the expected microporosity for an AFI-structured material and both intra- and intercrystalline mesoporosity. In good agreement with nanocomposite nature of these micrometer-sized crystals, the size of their generated by burning the carbon matrix can be relatively controlled by the conditions of the calcinatioin processes. under optimized synthesis and calcination conditions, AFI-structured materials with high mesoporous surface area and pore volume can be afforded.

• 出版日期2013-6