EFFECT OF CHROMIUM ADDITION ON THE BEHAVIOR OF IRON ACTIVATED CARBON CATALYSTS FOR CARBON-MONOXIDE HYDROGENATION

被引：4

作者：

RODRIGUEZREINOSO, F

SEPULVEDAESCRIBANO, A

机构：

来源：

APPLIED CATALYSIS | 1991年 / 77卷 / 01期

关键词：

ADSORPTION; CARBON MONOXIDE CHEMISORPTION; CARBON MONOXIDE HYDROGENATION; CHROMIUM; IRON-CHROMIUM ACTIVE CARBON;

D O I：

10.1016/0166-9834(91)80027-T

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：

To study the effect of chromium addition to iron/active carbon catalysts in the carbon monoxide hydrogenation reaction at atmospheric pressure, five FeCr/C catalysts were prepared with a range of Cr/Fe atomic ratii. Three samples were prepared by coadsorption of the respective nitrates and the other two by successive adsorption. Catalysts were characterized by carbon monoxide chemisorption at 298 K and their catalytic activity was studied in differential conditions after reduction in hydrogen at 673 K. Both the irreversible carbon monoxide chemisorption and the catalytic activity of the samples decrease with increasing chromium content, this decrease being more important in the catalyst prepared by successive adsorption, with the chromium precursor added after adsorption of iron. Chromium favors methane production without modifying the selectivity towards alkenes. These results are interpreted on the basis of a diluent effect of chromium, which results in a decrease in the amount of surface-reduced iron sites.

引用

页码：95 / 108

页数：14

共 32 条

[1] WATER-GAS SHIFT REACTION OVER AN IRON-OXIDE CHROMIUM-OXIDE CATALYST .2. STABILITY OF ACTIVITY [J].

CHINCHEN, GC ;

LOGAN, RH ;

SPENCER, MS .

APPLIED CATALYSIS, 1984, 12 (01) :89-96

[2] WATER-GAS SHIFT REACTION OVER AN IRON-OXIDE CHROMIUM-OXIDE CATALYST .3. KINETICS OF REACTION [J].

CHINCHEN, GC ;

LOGAN, RH ;

SPENCER, MS .

APPLIED CATALYSIS, 1984, 12 (01) :97-103

[3] WATER-GAS SHIFT REACTION OVER AN IRON-OXIDE CHROMIUM-OXIDE CATALYST .1. MASS-TRANSPORT EFFECTS [J].

CHINCHEN, GC ;

LOGAN, RH ;

SPENCER, MS .

APPLIED CATALYSIS, 1984, 12 (01) :69-88

[4] CHANGES IN IRON OXIDATION-STATE AND SURFACE-COMPOSITION OF IRON-CHROMIUM CATALYST REDUCED BY HYDROGEN [J].

CHUDINOV, MG ;

KUZNETSOV, BN ;

ALEKSEEV, AM .

REACTION KINETICS AND CATALYSIS LETTERS, 1990, 41 (01) :7-11

[5]

Courty Ph., 1979, STUD SURF SCI CATAL, V3, P293

[6] PHYSICAL AND CATALYTIC PROPERTIES OF HIGH-TEMPERATURE WATER GAS SHIFT CATALYSTS BASED UPON IRON CHROMIUM OXIDES [J].

DOPPLER, G ;

TRAUTWEIN, AX ;

ZIETHEN, HM ;

AMBACH, E ;

LEHNERT, R ;

SPRAGUE, MJ ;

GONSER, U .

APPLIED CATALYSIS, 1988, 40 (1-2) :119-130

[7]

DRY ME, 1981, CATALYSIS SCI TECHNO, V1, P160

[8] INFLUENCE OF THE PARTICLE-SIZE OF METAL IN THE HYDROGENOLYSIS OF N-BUTANE ON CARBON SUPPORTED IRON CATALYSTS [J].

GUERRERORUIZ, A ;

MORENOCASTILLA, C ;

RODRIGUEZRAMOS, I .

REACTION KINETICS AND CATALYSIS LETTERS, 1985, 27 (02) :283-286

[9] ACTIVE PHASE IN POTASSIUM-PROMOTED IRON-OXIDE CATALYST FOR DEHYDROGENATION OF ETHYLBENZENE [J].

HIRANO, T .

APPLIED CATALYSIS, 1986, 26 (1-2) :81-90

[10] ROLES OF POTASSIUM IN POTASSIUM-PROMOTED IRON-OXIDE CATALYST FOR DEHYDROGENATION OF ETHYLBENZENE [J].

HIRANO, T .

APPLIED CATALYSIS, 1986, 26 (1-2) :65-79

← 1 2 3 4 →