NO reduction with NH3 under oxidizing atmosphere on copper loaded hydroxyapatite

被引：21

作者：

Jemal, Jihene ^{[1
]}

Tounsi, Hassib ^{[1
]}

Chaari, Kamel ^{[2
]}

Petitto, Carolina ^{[3
]}

Delahay, Gerard ^{[3
]}

Djemel, Samir ^{[1
]}

Ghorbel, Abdelhamid ^{[1
]}

机构：

[1] Fac Sci Tunis, Dept Chim, Lab Chim Mat & Catalyse, Tunis 1060, Tunisia

[2] ENIS, Lab Chim Ind, Sfax 3038, Tunisia

[3] Ecole Natl Super Chim Montpellier, Equipe Mat Avances Catalyse & Sante, Inst Charles Gerhardt, UMR CNRS UM2 ENSCM UM1 5253, F-34296 Montpellier, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2012年 / 113卷

关键词：

Selective catalytic reduction; Nitric oxide; Ammonia; Copper; Hydroxyapatite; SELECTIVE CATALYTIC-REDUCTION; NITRIC-OXIDE; SYNTHETIC HYDROXYAPATITE; ZERO CHARGE; AMMONIA; SURFACE; IONS; ABATEMENT; SORPTION; ZEOLITE;

D O I：

10.1016/j.apcatb.2011.11.045

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：

Copper loaded hydroxyapatite catalysts were prepared by ion exchange in aqueous phase. The copper ion exchange capacity of hydroxyapatite host structure is highly dependent on the initial copper concentration of the solution. For the lowest concentration, a pH variation of the exchange solution is observed. This change in pH may allow the deposition of a small amount of copper hydroxide at the expense of cationic substitution of copper. The increase in copper content exchanged has no effect on the profile of conversion of NO by NH3. From this, it is assumed that the copper cations substituted for calcium are not active in the reaction. The profiles of NO conversion obtained, are in agreement with the presence of a small amount of copper oxide clusters deposited on the surfaces of the apatite. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：255 / 260

页数：6

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