Structure of oxides prepared by decomposition of layered double Mg-Al and Ni-Al hydroxides

被引：43

作者：

Cherepanova, Svetlana V. ^{[1
,2
]}

Leont'eva, Natalya N. ^{[3
]}

Arbuzov, Aleksey B. ^{[3
]}

Drozdov, Vladimir A. ^{[3
]}

Belskaya, Olga B. ^{[3
,4
]}

Antonicheva, Nina V. ^{[3
]}

机构：

[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Inst Hydrocarbons Proc, Siberian Branch, Omsk 644040, Russia

[4] Omsk State Tech Univ, Omsk, Russia

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 225卷

基金：

俄罗斯科学基金会;

关键词：

LDH; Mixed oxide; X-ray diffraction; DIFFaX simulation; Defect spinel; 1D disorder; X-RAY-DIFFRACTION; HYDROTALCITE; NICKEL; CATALYSTS; PRECURSORS; SPINEL; SPECTROSCOPY; TEMPERATURE; CRYSTALS; XRD;

D O I：

10.1016/j.jssc.2015.01.022

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Thermal decomposition of Mg-Al and Ni-Al layered double hydroxides LDH at temperatures lower than 800 degrees C leads to the formation of oxides with different structures. Mg-Al oxide has a very defective structure and consists of octahedral layers as in periclase MgO and mixed octahedral-tetrahedral layers as in spinel MgAl2O4. Mixed Ni-Al oxide has a sandwich-like structure, consisting of a core with Al-doped NiO-like structure and some surface layers with spinel NiAl2O4 structure epitaxial connected with the core. Suggested models were verified by simulation of X-ray diffraction patterns using DIFFaX code, as well as HRTEM, IR-, UV-spectroscopies, and XPS. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：417 / 426

页数：10