CO Adsorption on Various Oxide Phases Grown on Palladium(111) and Isothermal Oxidation on PdO(101)

MISSING IMAGE

Material Information

Title:
CO Adsorption on Various Oxide Phases Grown on Palladium(111) and Isothermal Oxidation on PdO(101)
Physical Description:
1 online resource (47 p.)
Language:
english
Creator:
Li, Tao
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Master's ( M.S.)
Degree Grantor:
University of Florida
Degree Disciplines:
Chemical Engineering
Committee Chair:
WEAVER,JASON F
Committee Co-Chair:
HAGELIN,HELENA AE

Subjects

Subjects / Keywords:
co -- isothermal -- oxide -- palladium -- rairs
Chemical Engineering -- Dissertations, Academic -- UF
Genre:
Chemical Engineering thesis, M.S.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
CO molecule, due to its simple vibrational and electronic structure, makes itself an ideal candidate for the investigation of vibrational spectroscopy on transition metals and their oxide surfaces. In this thesis, I will present two studies that were conducted during my two years master research at University of Florida. The first study focuses on the investigation of oxidation on Pd(111) surface. Temperature programmed desorption (TPD) of two-dimensional (2D) oxide and PdO(101) were obtained under the Ultra high vacuum (UHV) condition and oxygen uptake curve was collected at the temperature before and after precursor desorption peak. Because the initial formation of PdO(101) surface is mediated by the stability of precursor state, and at high temperature the uptake curve abruptly slows down at ~0.7 ML. Thus we used this phenomenon to calibrate the oxygen coverage scale in this experiment. The second study focuses on the Reflection-Absorption Infrared Spectroscopy (RAIRS) spectra of CO adsorption on Pd(111) and oxidized surface as well as isothermal oxidation of CO on PdO(101) surface. It turns out that at 100 K CO adsorbs on bridge and hollow sites on Pd(111) at the saturation coverage of 0.5 ML, whereas for Pd5O4 and PdO(101) surface, CO mainly adsorbs on mixture of atop and bridge sites at saturation coverage of 0.46 ML and 0.35 ML, respectively. Isothermal CO oxidation experiment shows the change of CO characteristic adsorption peak as the decrease of oxygen surface coverage.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Tao Li.
Thesis:
Thesis (M.S.)--University of Florida, 2014.
Local:
Adviser: WEAVER,JASON F.
Local:
Co-adviser: HAGELIN,HELENA AE.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2016-05-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2014
System ID:
UFE0046847:00001