CoAPSO-5型分子筛的合成、结构及性能研究

以三乙胺为模板剂,在氟化氢的参与下,采用水热晶化法合成了纯相的 CoAPSO-5型分子筛。用 X 射线衍射、红外光谱、电子探针和 X 射线光电子能谱等技术对这种分子筛进行了结构研究,确证了 Co 和 Si 对 A1PO_4-5分子筛骨架的同晶置换。CoAPSO-5型分子筛具有离子交换性和良好的热稳定性、吸附性和表面酸性。利用正十六烷裂化反应考察了 CoAPSO-5的催化活性和选择性,表明其在催化领域内具有潜在的应用价值。

Study on Synthesis,Structure and Properties of CoAPSO-5 Molecular Sieve

Cobalt silicoaluminophosphate molecular sieve number 5(CoAPSO-5)was hy-drothermally crystallized in the presence of hydrogen fluoride and triethylamineas a template.Investigation on the structure performed by means of XRD,IR,EPMA and XPS techniques proves isomorphous substitution of Al~(3+) by Co~(2+) inthe lattice of CoAPSO-5.The molecular sieve has good adsorption,thermal stabilityand stronger acidity.Potential applicability of CoAPSO-5 in the field of catalysisis evident from the catalytic activity and selectivity exhibited during crackingof n-C_(16).