The Haber-Bosch Process Revisited: On the Real Structure and Stability of "Ammonia Iron" under Working Conditions

被引：593

作者：

Kandemir, Timur ^{[1
]}

Schuster, Manfred E. ^{[1
]}

Senyshyn, Anatoliy ^{[2
]}

Behrens, Malte ^{[1
]}

Schloegl, Robert ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Abt Anorgan Chem, D-14195 Berlin, Germany

[2] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85747 Garching, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 48期

关键词：

catalyst microstructure; Haber-Bosch process; heterogeneous catalysis; iron nitridation; neutron diffraction; LONG-RANGE ORDER; IN-SITU; NEUTRON-DIFFRACTION; MAGNETIC-PROPERTIES; SURFACE; NITROGEN; CATALYST; DECOMPOSITION; MECHANISM; POWDER;

D O I：

10.1002/anie.201305812

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In situ neutron diffraction was used to study the structural properties of an industrial ammonia synthesis catalyst under working conditions similar to those of the Haber-Bosch process. Despite favorable thermodynamics, no indications of reversible bulk nitridation of the iron catalyst was observed in a self-generated ammonia concentration of 12 vol % at 425 °C and 75 bar after 88 h on stream. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：12723 / 12726

页数：4

共 45 条

[1] The interaction of nitrogen with the (111) surface of iron at low and at elevated pressures [J].

Alstrup, I ;

Chorkendorff, I ;

Ullmann, S .

JOURNAL OF CATALYSIS, 1997, 168 (02) :217-234

[2]

Apodaca L. E., 2011, US GEOLOGICAL SURVEY

[3]

Appl M., 2000, ULLMANNS ENCY IND CH, P139

[4] KINETICS OF ACTIVATION OF THE INDUSTRIAL AND MODEL FUSED IRON CATALYSTS FOR AMMONIA-SYNTHESIS [J].

BARANSKI, A ;

KOTARBA, A ;

LAGAN, JM ;

PATTEKJANCZYK, A ;

PYRCZAK, E ;

REIZER, A .

APPLIED CATALYSIS A-GENERAL, 1994, 112 (01) :13-36

[5] CATALYTIC DECOMPOSITION OF NITROGEN-15-LABELED HYDRAZINE ON MGO-SUPPORTED IRON [J].

BLOCK, J ;

SCHULZEK.G .

JOURNAL OF CATALYSIS, 1973, 30 (02) :327-329

[6] THE TEXTURAL PROMOTION OF METALLIC IRON BY ALUMINA [J].

BORGHARD, WS ;

BOUDART, M .

JOURNAL OF CATALYSIS, 1983, 80 (01) :194-206

[7] KINETICS AND MECHANISM OF AMMONIA-SYNTHESIS [J].

BOUDART, M .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1981, 23 (1-2) :1-15

[8] SURFACE, CATALYTIC AND MAGNETIC-PROPERTIES OF SMALL IRON PARTICLES .1. PREPARATION AND CHARACTERIZATION OF SAMPLES [J].

BOUDART, M ;

DELBOUILLE, A ;

DUMESIC, JA ;

KHAMMOUMA, S ;

TOPSOE, H .

JOURNAL OF CATALYSIS, 1975, 37 (03) :486-502

[9] INTERACTION OF NITROGEN WITH IRON SURFACES .1. FE(100) AND FE(111) [J].

BOZSO, F ;

ERTL, G ;

GRUNZE, M ;

WEISS, M .

JOURNAL OF CATALYSIS, 1977, 49 (01) :18-41

[10] SURFACE, CATALYTIC AND MAGNETIC-PROPERTIES OF SMALL IRON PARTICLES .3. NITROGEN INDUCED SURFACE RECONSTRUCTION [J].

DUMESIC, JA ;

TOPSOE, H ;

BOUDART, M .

JOURNAL OF CATALYSIS, 1975, 37 (03) :513-522

← 1 2 3 4 5 →