Chemisorption of hydrogen on ultrathin Pd films on Mo (100)

John M. Heitzinger; Steven C. Gebhard; Bruce E. Koel

doi:10.1016/0009-2614(92)87046-R

Chemisorption of hydrogen on ultrathin Pd films on Mo (100)

John M. Heitzinger, Steven C. Gebhard, Bruce E. Koel

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12 Scopus citations

Abstract

The H₂ adsorption properties of ultrathin Pd films deposited on Mo(100) have been studied with Auger electron spectroscopy (AES) and temperature-programmed desorption (TPD). The pseudomorphic monolayer of Pd on Mo(100) has a greatly reduced H₂ uptake capacity at 150 K compared to bulk Pd. Desorption from the Pd monolayer occurs from a chemisorption state with a desorption temperature of about 290 K. Thicker Pd films also have a reduced H₂ uptake, until θ_Pd≥5.5. H₂ desorption from the low-temperature hydride state that is characteristic of bulk Pd only occurs for Pd films with θ_Pd≥5.5.

Original language	English (US)
Pages (from-to)	65-70
Number of pages	6
Journal	Chemical Physics Letters
Volume	200
Issue number	1-2
DOIs	https://doi.org/10.1016/0009-2614(92)87046-R
State	Published - Nov 27 1992

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{43017f30c4964e0ba7dfd18160175850,

title = "Chemisorption of hydrogen on ultrathin Pd films on Mo (100)",

abstract = "The H2 adsorption properties of ultrathin Pd films deposited on Mo(100) have been studied with Auger electron spectroscopy (AES) and temperature-programmed desorption (TPD). The pseudomorphic monolayer of Pd on Mo(100) has a greatly reduced H2 uptake capacity at 150 K compared to bulk Pd. Desorption from the Pd monolayer occurs from a chemisorption state with a desorption temperature of about 290 K. Thicker Pd films also have a reduced H2 uptake, until θPd≥5.5. H2 desorption from the low-temperature hydride state that is characteristic of bulk Pd only occurs for Pd films with θPd≥5.5.",

author = "Heitzinger, \{John M.\} and Gebhard, \{Steven C.\} and Koel, \{Bruce E.\}",

year = "1992",

month = nov,

day = "27",

doi = "10.1016/0009-2614(92)87046-R",

language = "English (US)",

volume = "200",

pages = "65--70",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - Chemisorption of hydrogen on ultrathin Pd films on Mo (100)

AU - Heitzinger, John M.

AU - Gebhard, Steven C.

AU - Koel, Bruce E.

PY - 1992/11/27

Y1 - 1992/11/27

N2 - The H2 adsorption properties of ultrathin Pd films deposited on Mo(100) have been studied with Auger electron spectroscopy (AES) and temperature-programmed desorption (TPD). The pseudomorphic monolayer of Pd on Mo(100) has a greatly reduced H2 uptake capacity at 150 K compared to bulk Pd. Desorption from the Pd monolayer occurs from a chemisorption state with a desorption temperature of about 290 K. Thicker Pd films also have a reduced H2 uptake, until θPd≥5.5. H2 desorption from the low-temperature hydride state that is characteristic of bulk Pd only occurs for Pd films with θPd≥5.5.

AB - The H2 adsorption properties of ultrathin Pd films deposited on Mo(100) have been studied with Auger electron spectroscopy (AES) and temperature-programmed desorption (TPD). The pseudomorphic monolayer of Pd on Mo(100) has a greatly reduced H2 uptake capacity at 150 K compared to bulk Pd. Desorption from the Pd monolayer occurs from a chemisorption state with a desorption temperature of about 290 K. Thicker Pd films also have a reduced H2 uptake, until θPd≥5.5. H2 desorption from the low-temperature hydride state that is characteristic of bulk Pd only occurs for Pd films with θPd≥5.5.

UR - https://www.scopus.com/pages/publications/4243880991

UR - https://www.scopus.com/inward/citedby.url?scp=4243880991&partnerID=8YFLogxK

U2 - 10.1016/0009-2614(92)87046-R

DO - 10.1016/0009-2614(92)87046-R

M3 - Article

AN - SCOPUS:4243880991

SN - 0009-2614

VL - 200

SP - 65

EP - 70

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -

Chemisorption of hydrogen on ultrathin Pd films on Mo (100)

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