Nanostructured La0.8Sr0.2Fe0.8Cr0.2O3 Perovskite for the Steam Methane Reforming

被引：16

作者：

Gomez-Cuaspud, Jairo A. ^{[1
]}

Perez, Carlos A. ^{[2
]}

Schmal, Martin ^{[2
]}

机构：

[1] Univ Pedagog & Tecnol Colombia, Inst Invest & Innovac Ciencia & Tecnol Mat INCITE, Grp Integridad & Evaluac Mat GIEM, Ave Cent Norte 39-115, Tunja, Colombia

[2] Univ Fed Rio de Janeiro, NUCAT COPPE UFRJ, Ctr Tecnol, Bloco G,Sala 228 CEP, BR-21945909 Rio De Janeiro, Brazil

来源：

CATALYSIS LETTERS | 2016年 / 146卷 / 12期

关键词：

Chromium-iron perovskite; Methane reforming; Post reaction analyses; SHELL REDOX CATALYST; PARTIAL OXIDATION; OXYGEN CARRIERS; OXIDES; COMBUSTION; CO; DEPOSITION; HYDROGEN; LAFE1-XCOXO3; ACTIVATION;

D O I：

10.1007/s10562-016-1885-4

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：

This work describes the synthesis of La0.8Sr0.2Fe0.8Cr0.2O3 perovskite using a polymerization chemical route, for application on steam methane reforming reaction, compared to the LaFeO3 oxide. Results derived from X-ray diffraction (XRD), X-ray photoelectron spectroscopy and transmission electron microscopy (TEM) confirmed the presence of a prevalent orthorhombic structure related with a nanostructured solid (15-33 nm). The methane conversion of La0.8Sr0.2Fe0.8Cr0.2O3 oxide is very high compared to the LaFeO3 oxide at 700 A degrees C. The stability test was performed during 240 h, using the catalyst under similar reaction conditions and the deactivation was low. Post reaction analyses by TEM, XRD and TPO showed growth of crystallite sizes, absence of carbon deposition, but no structural modifications, which suggest that the promoters prevent carbon deposition and resist structure changes during the steam methane reforming reaction. [GRAPHICS] .

引用

页码：2504 / 2515

页数：12

共 51 条

[1] CATALYTIC COMBUSTION OF METHANE OVER VARIOUS PEROVSKITE-TYPE OXIDES [J].