氟离子改性的AlPO_4-5和AlPO_4-11分子筛的研究  

STUDY ON THE STRUCTURE OF THE FLUORINATED ALUMINOPHOSPHATE MOLECULAR SIEVES

作　　者：唐定兴[1] 冯殿忠[2] 

机构地区：[1]青海师范大学 [2]兰州大学

出　　处：《青海师范大学学报（自然科学版）》1991年第2期40-44,共5页Journal of Qinghai Normal University(Natural Science Edition)

摘　　要：作者用2%的氟化铵溶液对A1PO_(4-5)和A1PO(4_11)分子筛进行了改性。产物经X射线粉末衍射、红外光谱、吸附水后的热重—失重速率等方法进行分析,结果表明氟化后分子筛的骨架发生改变.表面酸性研究表明氟化后分子筛不具B酸中心和L酸中心。AlPO_4-5 and AlPO_4-11 molecular sieves were modified with the solution of 2% ammonium fluoride, The products were characterized with XRD, IR, TG-DTG. The results illustrated that the topologies of the molecular Sieves collapse more or less. The Surface acid was investigated. All fluorinated aluminophosphate sieves have no Bronsted acid site and no Lewis acid site.

关 键 词：分子筛 ALPO4-5 AlPO4-Ⅱ 氟离子 

分 类 号：TQ424.25[化学工程]