Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface

George H. Smudde; Min Yu; Peter C. Stair

doi:10.1021/ja00058a053

Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface

George H. Smudde, Min Yu, Peter C. Stair

Northwestern University

Research output: Contribution to journal › Article

24 Citations (Scopus)

Abstract

The adsorption and surface reactions of free gas phase methyl radicals on oxygen-modified Mo(100) have been studied using a combination of temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). Methyl radicals were found to adsorb on the surface at room temperature. Upon heating the surface methyl groups decompose to form surface hydrogen. The surface hydrogen hydrogenates the remaining intact methyl groups leading to methane which desorbs from the surface. The carbon produced by dehydrogenation combines with surface oxygen to yield CO. Comparison of the surface chemistry and the measured C(1s) binding energy with surface methoxy and with CH₃ bonded to metal surfaces indicates that the methyl groups are primarily bonded to surface metal atoms to form a metal alkyl rather than to surface oxygen.

Original language	English
Pages (from-to)	1988-1993
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	115
Issue number	5
DOIs	https://doi.org/10.1021/ja00058a053
Publication status	Published - Mar 1 1993

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/ja00058a053

Fingerprint Dive into the research topics of 'Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface'. Together they form a unique fingerprint.

Cite this

Smudde, G. H., Yu, M., & Stair, P. C. (1993). Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface. Journal of the American Chemical Society, 115(5), 1988-1993. https://doi.org/10.1021/ja00058a053

@article{fe5ca996e4014ac7bd1a2984929010e0,

title = "Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface",

abstract = "The adsorption and surface reactions of free gas phase methyl radicals on oxygen-modified Mo(100) have been studied using a combination of temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). Methyl radicals were found to adsorb on the surface at room temperature. Upon heating the surface methyl groups decompose to form surface hydrogen. The surface hydrogen hydrogenates the remaining intact methyl groups leading to methane which desorbs from the surface. The carbon produced by dehydrogenation combines with surface oxygen to yield CO. Comparison of the surface chemistry and the measured C(1s) binding energy with surface methoxy and with CH3 bonded to metal surfaces indicates that the methyl groups are primarily bonded to surface metal atoms to form a metal alkyl rather than to surface oxygen.",

author = "Smudde, {George H.} and Min Yu and Stair, {Peter C.}",

year = "1993",

month = mar,

day = "1",

doi = "10.1021/ja00058a053",

language = "English",

volume = "115",

pages = "1988--1993",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

number = "5",

}

TY - JOUR

T1 - Adsorption of Methyl Radicals on the Oxygen-Modified Mo(100) Surface

AU - Smudde, George H.

AU - Yu, Min

AU - Stair, Peter C.

PY - 1993/3/1

Y1 - 1993/3/1

N2 - The adsorption and surface reactions of free gas phase methyl radicals on oxygen-modified Mo(100) have been studied using a combination of temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). Methyl radicals were found to adsorb on the surface at room temperature. Upon heating the surface methyl groups decompose to form surface hydrogen. The surface hydrogen hydrogenates the remaining intact methyl groups leading to methane which desorbs from the surface. The carbon produced by dehydrogenation combines with surface oxygen to yield CO. Comparison of the surface chemistry and the measured C(1s) binding energy with surface methoxy and with CH3 bonded to metal surfaces indicates that the methyl groups are primarily bonded to surface metal atoms to form a metal alkyl rather than to surface oxygen.

AB - The adsorption and surface reactions of free gas phase methyl radicals on oxygen-modified Mo(100) have been studied using a combination of temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). Methyl radicals were found to adsorb on the surface at room temperature. Upon heating the surface methyl groups decompose to form surface hydrogen. The surface hydrogen hydrogenates the remaining intact methyl groups leading to methane which desorbs from the surface. The carbon produced by dehydrogenation combines with surface oxygen to yield CO. Comparison of the surface chemistry and the measured C(1s) binding energy with surface methoxy and with CH3 bonded to metal surfaces indicates that the methyl groups are primarily bonded to surface metal atoms to form a metal alkyl rather than to surface oxygen.

UR - http://www.scopus.com/inward/record.url?scp=0037885157&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037885157&partnerID=8YFLogxK

U2 - 10.1021/ja00058a053

DO - 10.1021/ja00058a053

M3 - Article

AN - SCOPUS:0037885157

VL - 115

SP - 1988

EP - 1993

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 5

ER -