ADSORPTION OF HEXACHLOROPLATINIC ACID ON GAMMA-ALUMINA COATINGS FOR PREPARATION OF MONOLITHIC STRUCTURE CATALYSTS

被引：3

作者：

BLACHOU, VM ^{[1
]}

PHILIPPOPOULOS, CJ ^{[1
]}

机构：

[1] NATL TECH UNIV ATHENS,DEPT CHEM ENGN,CHEM PROC ENGN LAB,GR-15773 ATHENS,GREECE

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 1993年 / 119卷

关键词：

PLATINUM ALUMINA; ADSORPTION; MONOLITHIC CATALYSTS;

D O I：

10.1080/00986449308936106

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The adsorption of hexachloroplatinic acid on gamma-Alumina coatings is investigated in order to prepare monolithic structure catalysts for carbon monoxide oxidation. For acid concentrations in the range 0.25-1.5 mM the adsorption is examined in a batch process and a kinetic model is proposed and evaluated. The pH of the solution has a major impact on the adsorption rate and dispersion of Pt on Al2O3 and when acidity becomes lower than 1.5 pH value the deposition of Pt on the catalyst by pore volume impregnation is favourable. The catalytic properties of Pt-alumina as oxidation catalyst for CO depend strongly on the adsorption rate of H2PtCl6. A difference of 80-degrees-C at the light off temperature is observed for catalysts prepared by adsorption from solutions with different acidity.

引用

页码：41 / 53

页数：13

共 10 条

[1]

Cooper B.J., 1987, CATALYSIS AUTOMOTIVE, V30, P117

[2] PREPARATION OF METAL DISTRIBUTIONS WITHIN CATALYST SUPPORTS .1. EFFECT OF PH ON CATALYTIC METAL PROFILES [J].

HEISE, MS ;

SCHWARZ, JA .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1985, 107 (01) :237-243

[3] DISTRIBUTIONS OF HF CO-IMPREGNATED RHODIUM, PLATINUM AND PALLADIUM IN ALUMINA HONEYCOMB SUPPORTS [J].

HEPBURN, JS ;

STENGER, HG ;

LYMAN, CE .

APPLIED CATALYSIS, 1989, 55 (02) :271-285

[4] CO-IMPREGNATION OF RHODIUM INTO ALUMINA HONEYCOMBS WITH ACIDS AND SALTS [J].

HEPBURN, JS ;

STENGER, HG ;

LYMAN, CE .

APPLIED CATALYSIS, 1989, 56 (01) :107-118

[5] AN ISOTHERMAL FIXED-BED REACTOR WITH NONUNIFORMLY ACTIVE CATALYSTS - EXPERIMENTS AND THEORY [J].

LEE, CK ;

VARMA, A .

CHEMICAL ENGINEERING SCIENCE, 1988, 43 (08) :1995-2000

[6] THE DISTRIBUTION OF ACTIVE INGREDIENTS IN SUPPORTED CATALYSTS PREPARED BY IMPREGNATION [J].

LEE, SY ;

ARIS, R .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1985, 27 (02) :207-340

[7] INFLUENCE OF PH ON THE PREPARATION OF MONOMETALLIC RHODIUM AND PLATINUM, AND BIMETALLIC RHODIUM PLATINUM CATALYSTS SUPPORTED ON GAMMA-ALUMINA [J].

MARTENS, JHA ;

PRINS, R .

APPLIED CATALYSIS, 1989, 46 (01) :31-44

[8] BASIC BEHAVIOR OF ALUMINA IN PRESENCE OF STRONG ACIDS [J].

SANTACESARIA, E ;

GELOSA, D ;

CARRA, S .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1977, 16 (01) :45-47

[9] ADSORPTION OF HEXACHLOROPLATINIC ACID ON GAMMA-ALUMINA [J].

SANTACESARIA, E ;

CARRA, S ;

ADAMI, I .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1977, 16 (01) :41-44

[10]

SATTERFIELD CN, 1980, HETEROGENEOUS CATALY, P82

← 1 →