Catalytic decomposition of ammonia in simulated coal-derived gas over supported nickel catalysts

被引：13

作者：

Ozawa, Yasushi ^{[1
]}

Tochihara, Yoshihisa ^{[1
]}

机构：

[1] Cent Res Inst Elect Power Ind, Energy Engn Res Lab, Kanagawa 2400196, Japan

来源：

CATALYSIS TODAY | 2011年 / 164卷 / 01期

关键词：

IGCC; Hot gas clean-up; Ammonia decomposition; Catalysis; Catalyst selectivity; PARTIAL OXIDATION; LOW-TEMPERATURE; PORE STRUCTURE; ZEOLITES; NITROGEN; DEACTIVATION; METHANE; NH3; FE-ZSM-5; ACIDITY;

D O I：

10.1016/j.cattod.2010.11.037

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

As a hot gas clean-up technology for integrated coal gasification combined-cycle (IGCC) power plants, the catalytic decomposition of ammonia using simulated coal-derived gas was studied. Based on the selective catalytic oxidation of ammonia to nitrogen and water, the characteristics of five kinds of supported nickel catalysts were investigated. Ammonia decomposition experiments were carried out at 0.9 MPa, and the surface properties of the catalysts were investigated through surface area measurement, the temperature programmed desorption of ammonia(NH(3)-TPD), carbon analysis, XRD analysis, and transmission electron microscope (TEM) observation. The results showed that a nickel catalyst supported on ZSM-5 zeolite has the highest activity and selectivity for ammonia decomposition to nitrogen without carbon deposition from 250-400 degrees C among the tested catalysts. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：528 / 532

页数：5

共 22 条

[1] The selective catalytic oxidation of NH3 over Fe-ZSM-5 [J].

Akah, A ;

Cundy, C ;

Garforth, A .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 59 (3-4) :221-226

[2] The role of Al and strong acidity in the selective catalytic oxidation of NH3 over Fe-ZSM-5 [J].

Akah, Aaron C. ;

Nkeng, George ;

Garforth, Arthur A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 74 (1-2) :34-39

[3] Low temperature selective oxidation of ammonia to nitrogen on silver-based catalysts [J].

Gang, L ;

Anderson, BG ;

van Grondelle, J ;

van Santen, RA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 40 (02) :101-110

[4]

Guisnet M, 1997, STUD SURF SCI CATAL, V111, P1

[5] COKING AND DEACTIVATION OF ZEOLITES - INFLUENCE OF THE PORE STRUCTURE [J].

GUISNET, M ;

MAGNOUX, P .

APPLIED CATALYSIS, 1989, 54 (01) :1-27

[6]

KANEKO S, 2003, P ICOPE 03, V3, P163

[7] Synthesis and characterization of mesoporous alumina with nickel incorporated for use in the partial oxidation of methane into synthesis gas [J].

Kim, P ;

Kim, Y ;

Kim, H ;

Song, IK ;

Yi, J .

APPLIED CATALYSIS A-GENERAL, 2004, 272 (1-2) :157-166

[8]

KRISHNAN GN, 1987, DOEMC230872504

[9] Selective catalytic oxidation of NH3 in gasification gas.: 3.: Experiments at elevated pressure [J].

Leppalahti, J .

ENERGY & FUELS, 1998, 12 (04) :758-766

[10] Characterization and reactivity of MoO3/SiO2 catalysts in the selective catalytic oxidation of ammonia to N2 [J].

Lietti, L ;

Ramis, G ;

Busca, G ;

Bregani, F ;

Forzatti, P .

CATALYSIS TODAY, 2000, 61 (1-4) :187-195

← 1 2 3 →