MICROGRAVIMETRIC STUDY ON THE INTERACTION OF NICKEL POWDERS WITH NITROUS-OXIDE AND DIOXYGEN

被引：3

作者：

HO, YS

YEH, CT

机构：

[1] Department of Chemistry, National Tsinghua University, Hsinchu

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1990年 / 59卷 / 01期

关键词：

Nickel and Alloys--Oxidation - Nitrogen Compounds - Oxygen - Powders--Materials;

D O I：

10.1016/0304-5102(90)85087-X

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：

The interaction of nickel powders with dioxygen and nitrous oxide was gravimetrically studied. The dioxygen proved relatively reactive toward the surface of nickel. The O/Nis ratio obtained for this interaction increased with temperature but leveled off with a stoichiometry of 2.2 around 200 K. Nitrous oxide was a milder oxidant than dioxygen. The extent of nickel oxidation with nitrous oxide also increased with temperature. A stoichiometry of O/Nis = 0.60 ± 0.03 was obtained from the oxidation at 195 K < T < 232 K. These two stoichiometries suggested that weight gain on the nickel samples upon oxidation by dioxygen or nitrous oxide may be coupled with dihydrogen chemisorption to estimate the specific surface area of nickel samples. © 1990.

引用

页码：53 / 59

页数：7

共 15 条

[1]

[Anonymous], 1975, STRUCTURE METALLIC C

[2]

BEST JR, 1954, J AM CHEM SOC, V26, P838

[3] XPS AND UPS STUDIES OF INTERACTION OF NITROGEN-CONTAINING MOLECULES WITH NICKEL - USE OF BINDING-ENERGY PATTERNS AND RELATIVE INTENSITIES TO DIAGNOSE SURFACE SPECIES [J].