A novel method for preparation of doped Ba3(Ca1.18Nb1.82)O9-δ:: Application to ammonia synthesis at atmospheric pressure

被引：73

作者：

Li, ZJ ^{[1
]}

Liu, RQ ^{[1
]}

Xie, YH ^{[1
]}

Feng, S ^{[1
]}

Wang, JD ^{[1
]}

机构：

[1] Xinjiang Univ, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 11-12期

关键词：

high-temperature proton conductor (HTPC); ammonia synthesis; complex perovskite-type oxides;

D O I：

10.1016/j.ssi.2005.01.009

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：

Complex perovskite-type oxides Ba-3(Ca1.18Nb1.82)O-9 (BCN18), Ba3CaZr0.5Nb1.5O9 (BCZN), and Ba3Ca0.9Nd0.28Nb1.82O9 (BCNN) were synthesized by a new wet chemical method and characterized by thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Using the sintered samples as solid electrolyte and silver-palladium alloy as electrodes, ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in the solid-state proton-conducting cell reactor. The rate of evolution of ammonia was up to 2.16x10(-9) mol s(-1) cm(-2). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1063 / 1066

页数：4

共 16 条

[1] Anelastic and dielectric relaxation measurements in the protonic conductor Ba-3(Ca1.18Nb1.82)O9-delta [J].

Bausch, S ;

Bohn, HG ;

Schilling, W .

SOLID STATE IONICS, 1997, 97 (1-4) :517-521

[2] The high temperature proton conductor Ba3Ca1.18Nb1.82O9-δ.: I.: Electrical conductivity [J].

Bohn, HG ;

Schober, T ;

Mono, T ;

Schilling, W .

SOLID STATE IONICS, 1999, 117 (3-4) :219-228

[3] ELECTROCATALYTIC NONOXIDATIVE DIMERIZATION OF METHANE OVER AG ELECTRODES [J].

CHIANG, PH ;

ENG, D ;

STOUKIDES, M .

SOLID STATE IONICS, 1993, 61 (1-3) :99-103

[4] PROTON CONDUCTION IN SINTERED OXIDES AND ITS APPLICATION TO STEAM ELECTROLYSIS FOR HYDROGEN-PRODUCTION [J].

IWAHARA, H ;

ESAKA, T ;

UCHIDA, H ;

MAEDA, N .

SOLID STATE IONICS, 1981, 3-4 (AUG) :359-363

[5] The high-temperature proton Ba-3(Ca1.18Nb1.82)O-9-delta: Thermogravimetry of the water uptake [J].

Krug, F ;

Schober, T .

SOLID STATE IONICS, 1996, 92 (3-4) :297-302

[6] OXIDE-ION CONDUCTIVITY IN SOME SUBSTITUTED RARE-EARTH PYROZIRCONATES [J].

KUTTY, KVG ;

MATHEWS, CK ;

RAO, TN ;

VARADARAJU, UV .

SOLID STATE IONICS, 1995, 80 (1-2) :99-110

[7] Ammonia synthesis at atmospheric pressure [J].

Marnellos, G ;

Stoukides, M .

SCIENCE, 1998, 282 (5386) :98-100

[8] Current efficiency of electrochemical hydrogen pumping using a high-temperature proton conductor SrCe0.95Yb0.05O3-α [J].

Matsumoto, H ;

Iida, Y ;

Iwahara, H .

SOLID STATE IONICS, 2000, 127 (3-4) :345-349

[9] Lattice parameter change in water vapor exposed Ba3Ca1.18Nb1.82O9-delta [J].

Mono, T ;

Schober, T .

SOLID STATE IONICS, 1996, 91 (1-2) :155-159

[10] Modelling of equilibrium limited hydrogenation reactions carried out in H+ conducting solid oxide membrane reactors [J].

Panagos, E ;

Voudouris, I ;

Stoukides, M .

CHEMICAL ENGINEERING SCIENCE, 1996, 51 (11) :3175-3180

← 1 2 →