Influence of oxygen or methane preadsorption on low-temperature atomic deuterium emission from palladium deuteride

被引：1

作者：

Dus, R ^{[1
]}

Nowicka, E ^{[1
]}

Wolfram, Z ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

来源：

LANGMUIR | 1998年 / 14卷 / 16期

关键词：

D O I：

10.1021/la971034w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The emission of atomic deuterium from decomposing palladium deuteride (PdHx) was studied. The desorption of D atoms and D-2 molecules was confirmed during PdHx decomposition over a temperature range of 190-298 K. It was found that preadsorption of methane at 298 K onto a thin Pd film surface before transformation into palladium deuteride completely precluded emission of D atoms from the obtained PdDx. However preadsorption of oxygen and its reaction products with hydrogen (e.g., OHad or H2Oad) very slightly hindered D atom emission from decomposing PdDx.

引用

页码：4545 / 4551

页数：7

共 21 条

[1]

ALEFELD G, 1978, TOPICS APPL PHYSICS, V29

[2]

Bond G.C., 1962, CATALYSIS METALS

[3]

BORODZINSKI A, 1976, P 4 INT C CAT LOND

[4] STUDIES ON POSSIBILITY OF DETERMINATION OF SURFACE-AREA OF PALLADIUM FILMS BY MEANS OF ADSORPTION OF HYDROGEN OR OXYGEN AND RECIPROCAL TITRATION OF THESE GASES [J].

DUS, R ;

LISOWSKI, W .

SURFACE SCIENCE, 1976, 59 (01) :141-154

[5] HYDROGEN ADSORPTION ON GROUP-1-B METALS [J].

DUS, R .

PROGRESS IN SURFACE SCIENCE, 1993, 42 (1-4) :231-243

[6] DECOMPOSITION OF THIN PALLADIUM HYDRIDE FILMS AS A SOURCE FOR LOW-TEMPERATURE ATOMIC-HYDROGEN EMISSION [J].

DUS, R ;

NOWICKA, E ;

WOLFRAM, Z ;

LISOWSKI, W .

APPLIED SURFACE SCIENCE, 1993, 65-6 :106-109

[7]

DUS R, 1989, Z SURF SCI, V1, P216

[8] PHOTOEMISSION FROM CONDENSED LAYERS OF H-2 ON CU AND AU [J].

EBERHARDT, W ;

CANTOR, R ;

GREUTER, F ;

PLUMMER, EW .

SOLID STATE COMMUNICATIONS, 1982, 42 (11) :799-802

[9]

Fukai Y., 1993, SPRINGER SERIES MAT, V21

[10]

KIRCHHEIM R, 1988, P 1 INT S MET HYDR S, V2

← 1 2 3 →