烷基胺和醇胺在层状磷酸锆中的嵌入研究

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (1): 88.

烷基胺和醇胺在层状磷酸锆中的嵌入研究

徐金锁, 唐颐, 张华, 高滋

复旦大学化学系, 上海, 200433

收稿日期:1996-01-22 出版日期:1997-01-24 发布日期:1997-01-24
通讯作者: 高滋
作者简介:徐金锁, 男, 28岁, 博士研究生.
基金资助:
国家自然科学基金

Studies on the Intercalation of n-Alkylamine and n-Amino-alcohol in Layered Zirconium Phosphate

XU Jin-Suo, TANG Yi, ZHANG Hua, GAO Zi

Department of Chemistry, Fudan University.Shanghai, 200433

Received:1996-01-22 Online:1997-01-24 Published:1997-01-24

摘要/Abstract

摘要： 从制备层柱磷酸盐的要求出发考察了烷基胺和醇胺在层状α－Zr(HPO₄)2·H₂O(α－ZrP)中的嵌入及其对该层状磷酸盐结构和性质的影响.发现层板剥离度与有机胶种类及加入量有关;HPO₄^2-的水解程度主要取决于胶分子的碱性和层板剥离状况;已剥离的层板是介稳定的,放置后会重新有序化并发生相变.XRD及结构模型近似计算结果表明,在饱和嵌入量时,烷基胺和醇胺在α－ZrP层间呈双层排列.样品在空气中长时间放置后,甲胺和乙胺嵌入物会失去约50％的胺而转化为单层排列,丙胺、丁胶和酸胺嵌入物仍保持双层排列.

关键词: 层状磷酸盐, 层板剥离, 嵌入物相变, HPO₄^2-水解

Abstract: For the purpose of preparing pillared phosphates, the intercalation of n-alky-lamine and n-amino-alcohol in layered α-Zr(HPO₄)₂·H₂O(α-ZrP) and its effect on the struc-ture and properties of the layered phosphate have been investigated in detail. It was found that the delamination degree is related with the nature and the amount of amine added, and the extent of HPO₄^2- hydrolysis is dependent both on the basicity of the amine and the delam-ination degree.The delaminated sheets are metastable, and they may recover their ordered arrangement and experience phase transformations in air.The XRDresults and the approxi-mate calculation of the model structures of the intercalates show that a bilayer orientation of the n-alkylamine and n-amino-alcohol molecules is formed when the intercalates are saturat-ed- After long time exposure in air, the intercalates of methylamine and ethylamlne will lose about 50% of the amine and transfer to a monolayer orientation, but the intercalates of n-propylamine, n-butylamine and n-animo-alcohol still keep a bilayer orientation.

Key words: Layered zirconium phosphate, Delamination, Intercalate phase transformation, HPO₄^2- hydrolysis

TrendMD:

徐金锁, 唐颐, 张华, 高滋. 烷基胺和醇胺在层状磷酸锆中的嵌入研究. 高等学校化学学报, 1997, 18(1): 88.

XU Jin-Suo, TANG Yi, ZHANG Hua, GAO Zi. Studies on the Intercalation of n-Alkylamine and n-Amino-alcohol in Layered Zirconium Phosphate. Chem. J. Chinese Universities, 1997, 18(1): 88.