Preferential occupation of molybdenum on the thin alumina film: Characterization by CO titration

Zhiquan Jiang; Weixin Huang; Hong Zhao; Zhen Zhang; Dali Tan; Xinhe Bao

doi:10.1016/j.cattod.2007.10.063

Preferential occupation of molybdenum on the thin alumina film: Characterization by CO titration

Zhiquan Jiang, Weixin Huang, Hong Zhao, Zhen Zhang, Dali Tan, Xinhe Bao

Research output: Contribution to journal › Article › peer-review

Abstract

A thin alumina film, the alumina model surfaces modified by the metallic molybdenum and by the MoO₃ are titrated by CO chemisorption. Two types of CO adsorption sites, namely octahedrally and tetrahedrally coordinated Al³⁺ sites, are present on the thin alumina film. The thin alumina film prepared under UHV conditions can be used to simulate the conventional high-surface-area alumina supports in real catalysis. The deposited metallic molybdenum preferentially occupies octahedrally coordinated Al³⁺ site and suppresses CO chemisorption on this site, and oxidation of the surface molybdenum species enhances this suppression.

Original language	English
Pages (from-to)	28-34
Number of pages	7
Journal	Catalysis Today
Volume	131
Issue number	1-4
DOIs	https://doi.org/10.1016/j.cattod.2007.10.063
State	Published - 29 Feb 2008
Externally published	Yes

Keywords

Alumina
Molybdenum
Preferential occupation
Thermal desorption spectroscopy

Access to Document

10.1016/j.cattod.2007.10.063

Cite this

@article{6f9a64de041244589a503ed6d112ed98,

title = "Preferential occupation of molybdenum on the thin alumina film: Characterization by CO titration",

abstract = "A thin alumina film, the alumina model surfaces modified by the metallic molybdenum and by the MoO3 are titrated by CO chemisorption. Two types of CO adsorption sites, namely octahedrally and tetrahedrally coordinated Al3+ sites, are present on the thin alumina film. The thin alumina film prepared under UHV conditions can be used to simulate the conventional high-surface-area alumina supports in real catalysis. The deposited metallic molybdenum preferentially occupies octahedrally coordinated Al3+ site and suppresses CO chemisorption on this site, and oxidation of the surface molybdenum species enhances this suppression.",

keywords = "Alumina, Molybdenum, Preferential occupation, Thermal desorption spectroscopy",

author = "Zhiquan Jiang and Weixin Huang and Hong Zhao and Zhen Zhang and Dali Tan and Xinhe Bao",

year = "2008",

month = feb,

day = "29",

doi = "10.1016/j.cattod.2007.10.063",

language = "英语",

volume = "131",

pages = "28--34",

journal = "Catalysis Today",

issn = "0920-5861",

publisher = "Elsevier B.V.",

number = "1-4",

}

TY - JOUR

T1 - Preferential occupation of molybdenum on the thin alumina film

T2 - Characterization by CO titration

AU - Jiang, Zhiquan

AU - Huang, Weixin

AU - Zhao, Hong

AU - Zhang, Zhen

AU - Tan, Dali

AU - Bao, Xinhe

PY - 2008/2/29

Y1 - 2008/2/29

N2 - A thin alumina film, the alumina model surfaces modified by the metallic molybdenum and by the MoO3 are titrated by CO chemisorption. Two types of CO adsorption sites, namely octahedrally and tetrahedrally coordinated Al3+ sites, are present on the thin alumina film. The thin alumina film prepared under UHV conditions can be used to simulate the conventional high-surface-area alumina supports in real catalysis. The deposited metallic molybdenum preferentially occupies octahedrally coordinated Al3+ site and suppresses CO chemisorption on this site, and oxidation of the surface molybdenum species enhances this suppression.

AB - A thin alumina film, the alumina model surfaces modified by the metallic molybdenum and by the MoO3 are titrated by CO chemisorption. Two types of CO adsorption sites, namely octahedrally and tetrahedrally coordinated Al3+ sites, are present on the thin alumina film. The thin alumina film prepared under UHV conditions can be used to simulate the conventional high-surface-area alumina supports in real catalysis. The deposited metallic molybdenum preferentially occupies octahedrally coordinated Al3+ site and suppresses CO chemisorption on this site, and oxidation of the surface molybdenum species enhances this suppression.

KW - Alumina

KW - Molybdenum

KW - Preferential occupation

KW - Thermal desorption spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=38449102850&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2007.10.063

DO - 10.1016/j.cattod.2007.10.063

M3 - 文章

AN - SCOPUS:38449102850

SN - 0920-5861

VL - 131

SP - 28

EP - 34

JO - Catalysis Today

JF - Catalysis Today

IS - 1-4

ER -

Preferential occupation of molybdenum on the thin alumina film: Characterization by CO titration

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this