Structural flexibility in ∼SbVO4

被引：15

作者：

Landa-Canovas, Angel R. ^{[1
]}

Javier Garcia-Garcia, F. ^{[2
]}

Hansen, Staffan ^{[3
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[2] Univ Augsburg, Lehrstuhl Festkorperchem, Inst Phys, D-86159 Augsburg, Germany

[3] Lund Univ, Ctr Chem, Dept Chem, Div Polymer & Mat Chem, SE-22100 Lund, Sweden

来源：

CATALYSIS TODAY | 2010年 / 158卷 / 1-2期

关键词：

Catalyst; Propane ammoxidation; SbVO4/Sb2O4; system; Non-stoichiometry; Structural flexibility; OPERANDO RAMAN-GC; PROPANE AMMOXIDATION; OXIDE CATALYSTS; SELECTIVE OXIDATION; CRYSTAL-STRUCTURE; SB+V COVERAGE; VANADIUM; SYSTEM; ACRYLONITRILE; VSBO4;

D O I：

10.1016/j.cattod.2010.04.027

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

similar to SbVO4 is a well known catalyst used for the ammoxidation of propane to acrylonitrile. However, little importance is usually given to the structural flexibility exhibited by the similar to SbVO4 phase, which has rutile-type structure and can accommodate up to 1/8 of cation vacancies. In this work we highlight the great structural flexibility exhibited by this phase accommodating the changes in the oxidation state of vanadium which is accompanied by the introduction of cation vacancies. Besides, it presents a wide range of compositional non-stoichiometry, ranging from a 1/1 vanadium/antimony molar ratio to almost 1/0. It is carried out in a soft way and does not involve the creation of extended structural defects but more subtle structural changes such as long-range order, structural modulations and short-range order. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：156 / 161

页数：6

共 31 条

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