摘要
采用红外光谱研究了(NH_4)_2SiF_6处理的KL沸石样品的骨架Si/Al与吸收带频率的关系。在～770cm^(-1)附近吸收带的频率与沸石骨架中Al的摩尔分数X_(Al)(即Al/(Si+Al))间存线形关系:X_(Al)=-7.309×10^(-3)(u_(770-760)+0.3242。这一结果与化学分析结果一致。
KL zeolite was treated with (NH4)2 SiF6 for secondary synthesis L series mesopore material. In this paper, the relation of the framework Si/Al in theses mesoporous zeolite materials to infrared frequency was investigated by infrared spectrum. At 770 cm-1, absorb frequency (υ) to molar fraction of Al ( XAl= Al/(Si + Al) in zeolite framework was as following: XAl=-7.309×10-3 (υ770 - 760)+0.324 2, and this result was consistent with that by chemical analysis.
出处
《化工时刊》
CAS
2002年第4期31-34,共4页
Chemical Industry Times
