Sorption-desorption of NOx from a lean gas mixture on H3PW12O40•6H2O supported on carbon nanotubes

被引：5

作者：

Gómez-García, MA

Pitchon, V

Kiennemann, A

Corrias, M

Kalck, P

Serp, P

机构：

[1] ECPM, LMSPC, CNRS, UMR 7515, F-67087 Strasbourg 2, France

[2] Ecole Natl Super Ingenieurs Arts Chim & Technol, Lab Catalyse Chim Fine & Polymeres, F-31077 Toulouse 4, France

来源：

TOPICS IN CATALYSIS | 2004年 / 30-1卷 / 1-4期

关键词：

NOx storage; lean burn; tungstophosphoric acid; carbon nanotubes;

D O I：

10.1023/B:TOCA.0000029754.25117.e1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

NOx sorption capacities and efficiencies were measured on a new type of sorbent formed by 12-tungstophosphoric acid (HPW) supported on carbon nanotubes. On such a system, the sorption of both NO and NO2 was observed but compared with HPW alone, a complementary sorption of NOx is possible leading to a capacity of 25 mg/g(HPW) at 300 degreesC with an efficiency of 50%. The sorption results from the formation of a [H+(NO2-,NO+)] complex on HPW and an additional mode of adsorption by a free-nitrate which was identified by the bands at 2261, 1384 and 1295 cm(-1) using infrared spectroscopy.

引用

页码：229 / 233

页数：5

共 10 条

[1] DODECATUNGSTOPHOSPHORIC ACID HEXAHYDRATE, (H5O2+)3(PW12O403-) - TRUE STRUCTURE OF KEGGINS PENTAHYDRATE FROM SINGLE-CRYSTAL X-RAY AND NEUTRON-DIFFRACTION DATA [J].

BROWN, GM ;

NOESPIRLET, MR ;

BUSING, WR ;

LEVY, HA .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 1977, 33 (APR15) :1038-1046

[2]

*CITEPA, 2002, EM AIR FRANC METR

[3] Carbon nanofibers: Catalytic synthesis and applications [J].

De Jong, KP ;

Geus, JW .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2000, 42 (04) :481-510

[4]

Giordano R, 2003, EUR J INORG CHEM, P610

[5] Removal of NOx:: Part II.: Species formed during the sorption/desorption processes on barium aluminates [J].

Hodjati, S ;

Bernhardt, P ;

Petit, C ;

Pitchon, V ;

Kiennemann, A .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 19 (3-4) :221-232

[6] The mechanism of the selective NOx sorption on H3PW12O40•6H2O (HPW) [J].

Hodjati, S ;

Vaezzadeh, K ;

Petit, C ;

Pitchon, V ;

Kiennemann, A .

TOPICS IN CATALYSIS, 2001, 16 (1-4) :151-155

[7] Removal of NOX from a lean exhaust gas by absorption on heteropolyacids:: Reversible sorption of nitrogen oxides in H3PW12O40•6H2O [J].

Hodjati, S ;

Petit, C ;

Pitchon, V ;

Kiennemann, A .

JOURNAL OF CATALYSIS, 2001, 197 (02) :324-334

[8] THE DIMER STATE OF NO IN MICROPORES OF CU(OH)2-DISPERSED ACTIVATED CARBON-FIBERS [J].

KANEKO, K ;

KOBAYASHI, A ;

SUZUKI, T ;

OZEKI, S ;

KAKEI, K ;

KOSUGI, N ;

KURODA, H .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :1795-&

[9] Carbon nanotubes as a superior sorbent for nitrogen oxides [J].

Long, RQ ;

Yang, RT .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2001, 40 (20) :4288-4291

[10]

Nakamoto K., 2009, Infrared and Raman Spectra of Inorganic and Coordination Compounds: Part A: Theory and Applications in Inorganic Chemistry, V6th ed.

← 1 →