CHANGES INDUCED IN THE SURFACE CHARACTERISTICS AND CATALYTIC ACTIVITY OF AMORPHOUS CU-ZR BY HYDROGEN PRETREATMENT

被引：15

作者：

KATONA, T

MOLNAR, A

PERCZEL, IV

KOPASZ, C

HEGEDUS, Z

机构：

[1] ATTILA JOZSEF UNIV, DEPT ORGAN CHEM, H-6701 SZEGED, HUNGARY

[2] CTR CATALYSIS SURFACE & MAT SCI, SZEGED, HUNGARY

[3] AGMI INST MAT TESTING & QUAL CONTROL, BUDAPEST, HUNGARY

[4] CSEPEL IRON & MET WORKS, BUDAPEST, HUNGARY

[5] TECH UNIV BUDAPEST, DEPT PHYS, H-1521 BUDAPEST, HUNGARY

来源：

SURFACE AND INTERFACE ANALYSIS | 1992年 / 19卷 / 1-12期

关键词：

D O I：

10.1002/sia.740190196

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：

Hydrogen-treated amorphous Cu61Zr39 alloy ribbon exhibits the development of characteristic formations (hemispheres) in a arrangement (as revealed by SEM on both sides of the ribbon, in parallel with copper enrichment (determined by AES) and partial crystallization (determined by differential scanning calorimetry). The extrusion of pure copper is considered to be caused by hydrogen diffusing into the bulk through existing surface defects As a consequence of the surface and structural changes, steady increases in both the copper surface area and the catalytic activity (dehydrogenation of alcohols and isomerization of allyl alcohol and 2-propyloxirane) are demonstrated.

引用

页码：519 / 523

页数：5

共 20 条

[1] METALLIC GLASSES IN HETEROGENEOUS CATALYSIS [J].