The reaction of molten phenylphosphonic acid with a layered double hydroxide and its calcined oxide

被引：53

作者：

Carlino, S ^{[1
]}

Hudson, MJ ^{[1
]}

Husain, SW ^{[1
]}

Knowles, JA ^{[1
]}

机构：

[1] UNIV TARBIAT MOALLEM,DEPT CHEM,TEHRAN 15614,IRAN

来源：

SOLID STATE IONICS | 1996年 / 84卷 / 1-2期

关键词：

phenylphosphonic acid; layered double hydroxide (LDH); layered double oxide (LDO);

D O I：

10.1016/S0167-2738(96)83014-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Phenylphosphonic acid was thermally intercalated into both the host Mg-Al-CO3 layered double hydroxide (LDH) and its corresponding oxide material (LDO) formed by the thermal decomposition of the host LDH via a novel slow heating method. In the thermal intercalation process, the host and guest reactants are carefully heated together to a temperature just above the melting point of the guest. The resulting intercalation compounds were studied by a variety of analytical techniques. Powder X-ray diffraction (PXRD) indicated that the reaction products were all polyphasic microcrystalline materials and suggested that arrangement of the phenylphosphonate anions between the LDH and LDO layers was similar to that exhibited by zirconium (IV) bis(benzenephosphonate), alpha-Zr(C6H5PO3)(2) formed via a topotactic reaction. Fourier-transformed infrared (FTIR) was inconclusive, while thermal analysis of the reaction mixture clearly showed the reaction taking place. Al-27, C-13 and P-31 solid-state magic-angle spinning nuclear magnetic resonance (MAS NMR) indicated the presence of the anion of phenylphosphonic acid together with some free/unintercalated acid. Collectively, these techniques suggested that the phosphonic acid was intercalated between the layers of both LDH and LDO hosts by way of an acid-base condensation reaction.

引用

页码：117 / 129

页数：13

共 37 条

[1] CRYSTALLINE ZR(R-PO3)2 AND ZR(R-OPO3)2 COMPOUNDS (R=ORGANIC RADICAL) - NEW CLASS OF MATERIALS HAVING LAYERED STRUCTURE OF ZIRCONIUM-PHOSPHATE TYPE [J].