Grantee Research Project Results
The Catalytic Oxidation of Carbon Monoxide at Ambient Temperatures
EPA Grant Number: U915348Title: The Catalytic Oxidation of Carbon Monoxide at Ambient Temperatures
Investigators: Weber, Adam
Institution: Tufts University
EPA Project Officer: Packard, Benjamin H
Project Period: September 7, 1998 through January 1, 2001
Project Amount: $34,000
RFA: STAR Graduate Fellowships (1998) RFA Text | Recipients Lists
Research Category: Academic Fellowships , Safer Chemicals , Fellowship - Chemical Engineering
Objective:
The objectives of this research project are to: (1) investigate various preparation parameters in making catalysts for the total oxidation of carbon monoxide at ambient temperatures; and (2) examine parametric studies and their application to the oxidation of volatile organics.
Approach:
I will examine the gold supported on ceria catalyst system. The activity of the catalysts is highly dependent on the morphology, size, and related properties of the designed catalysts, which, in turn, are dependent on the preparation method used. I will be studying three different preparation methods—coprecipitation, deposition precipitation, and cogelation. With each method, certain parameters will be varied (e.g., initial solution concentration, calcination temperature, preparation temperature, precursor, gold loading, dopants, and carbonate used). The catalysts will be ranked by their light-off temperature for the carbon monoxide reaction, and will be characterized by methods such as scanning transmission electron microscopy, inductively coupled plasma, x-ray diffraction, and x-ray photoelectron spectroscopy. After the parameters and methods have been examined, the most active sample will be used for additional studies, including parametric studies of the carbon monoxide reaction and the oxidation of propane and propylene. The parametric studies include deactivation and the effects of water, contact time (space velocity), carbon dioxide, and oxygen concentration. At the completion of the project, an active catalyst and preparation protocol will be generated.
Supplemental Keywords:
fellowship, carbon monoxide, catalyst, scanning transmission electron microscopy, STEM, inductively coupled plasma, ICP, x-ray diffraction, XRD, x-ray photoelectron spectroscopy, XPS, catalytic oxidation, volatile organics., RFA, Scientific Discipline, Toxics, Air, Sustainable Industry/Business, Chemical Engineering, Environmental Chemistry, air toxics, cleaner production/pollution prevention, Sustainable Environment, HAPS, Chemistry, Technology for Sustainable Environment, Environmental Engineering, Engineering, Chemistry, & Physics, air pollutants, catalyst composition, catalytic oxidation, oxidation, oxidation of volitale organic hydrocarbons, air pollution control, carbon monoxide (CO), cerium oxide, oxidation of organic compounds, catalysts, air pollution, gold, carbon monoxide, formaldehyde pollution, volatile organic hydrocarbons, carbon monoxideProgress and Final Reports:
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.