Vanadium oxide supported on porous clay heterostructure for the partial oxidation of hydrogen sulphide to sulfur

被引：34

作者：

Soriano, M. D. ^{[1
]}

Cecilia, J. A. ^{[1
]}

Natoli, A. ^{[1
]}

Jimenez-Jimenez, J. ^{[1
]}

Lopez Nieto, J. M. ^{[2
]}

Rodriguez-Castellon, E. ^{[1
]}

机构：

[1] Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalografia & Mineral, E-29071 Malaga, Spain

[2] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Valencia 46022, Spain

来源：

CATALYSIS TODAY | 2015年 / 254卷

关键词：

V(2)O5; V4O9; Porous clay heterostructure; H2S; Selective oxidation; SELECTIVE CATALYTIC-OXIDATION; ELEMENTAL SULFUR; V2O5; CATALYSTS; WATER-VAPOR; H2S; MONTMORILLONITE; PROPANE;

D O I：

10.1016/j.cattod.2014.12.022

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Vanadium oxide supported on porous clay heterostructures (PCH) catalysts have been synthesized, characterized and evaluated in the selective oxidation of H2S to elemental sulfur. The catalysts were characterized by XRD, adsorption-desorption of N-2 at -196 degrees C, diffuse reflectance UV-vis, H-2-TPR, Raman spectroscopy and XPS. The catalysts with higher vanadium content are more active and selective, exhibiting a H2S conversion close to 70% after 360h on stream with a high selectivity toward elemental sulfur and a low formation of undesired SO2. The catalysts with V2O5 crystallites have shown a higher activity and resistance to the deactivation. The analysis of the spent catalyst has revealed the formation of V4O9 crystals during the catalytic test, which has been reported as the active phase in the selective oxidation of the H2S. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：36 / 42

页数：7

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