A versatile low temperature solid-state synthesis of vanadium nitride (VN) via a "guanidinium-route": experimental and theoretical studies from the key-intermediate to the final product

被引：16

作者：

de Souza, Eugenio Furtado ^{[1
]}

Chagas, Carlos Alberto ^{[2
]}

Ramalho, Teodorico C.

de Alencastro, Ricardo Bicca ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Quim, Lab Modelagem Mol LABMMOL, Av Athos,Silveira Ramos 149,CT,Bloco A,Sala 609, BR-21941909 Rio De Janeiro, RJ, Brazil

[2] Univ Fed Rio de Janeiro, COPPE, Nucleo Catalise, Programa Engn Quim, BR-21941914 Rio De Janeiro, RJ, Brazil

来源：

DALTON TRANSACTIONS | 2012年 / 41卷 / 47期

关键词：

O CATALYST SURFACE; THERMAL-DECOMPOSITION; AMMONIUM METAVANADATE; TITANIUM NITRIDE; TUNGSTEN CARBIDE; METAL NITRIDES; CARBON NITRIDE; REDUCTION; FILMS; OXYNITRIDE;

D O I：

10.1039/c2dt31614e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

An easy and efficient method ("guanidinium route") to synthesize vanadium nitride (VN) is evaluated in this paper. Initially, ammonium m-vanadate was mixed with guanidinium carbonate, producing an important intermediate, ammonium m-vanadate (GmV), through a solid-state reaction. GmV was decomposed as a function of the temperature and studied with TGA, DRX, FT-Infrared, Temperature-Programmed Surface Reaction (TPSR) and DFT. We show that GmV is transformed into bulk crystalline VN below 800 degrees C. XPS, periodic DFT calculations, and elemental analyses show that the surface is not carbon-free.

引用

页码：14381 / 14390

页数：10