Catalytic Reduction of Nitric Oxide

EPA Grant Number: R823529
Title: Catalytic Reduction of Nitric Oxide
Investigators: Chuang, Steven S.C.
Institution: University of Akron
EPA Project Officer: Hahn, Intaek
Project Period: October 1, 1995 through September 1, 1998
Project Amount: $280,211
RFA: Exploratory Research - Engineering (1995) RFA Text |  Recipients Lists
Research Category: Air Quality and Air Toxics , Safer Chemicals , Land and Waste Management


The objectives of this project include: (1) determination of the reactivities of various types of adsorbed NO and CO and their reaction pathways under various conditions for catalytic nitric oxide reduction, and (2) investigation of the feasibility of using silane to enclose the metal particle in order to inhibit sintering of the catalyst at high operating temperatures. The experimental plan consists of: (1) preparation and characterization of Rh, Ce-Rh, Pd, Cu-ZSM-5, and Co-ZSM-5 catalysts, (2) investigation of reaction dynamics, (3) catalyst modification by silanation, and (4) evaluation of catalyst deactivation characteristics in the presence of O2, SO2, and H2O. The experimental approach for reaction and silanation studies involves use of in situ infrared spectroscopy and mass spectroscopy to simultaneously determine dynamics of adsorbates as well as gaseous reactant and product concentration during NO reduction and silanation of catalysts. Results of the reactivity study will allow identification of the most active form of adsorbed CO and NO for the reaction and the sites to which these species adsorb. This knowledge is required for the design of catalyst preparation methods to populate the most active form of the sites on the catalyst surface. Successful development of the silanation approach could provide new ways to inhibit sintering of not only NO reduction catalysts but also numerous supported metal catalysts of industrial significance.

Publications and Presentations:

Publications have been submitted on this project: View all 5 publications for this project

Journal Articles:

Journal Articles have been submitted on this project: View all 2 journal articles for this project

Supplemental Keywords:

air, air pollution, NO reduction mechanism, catalysts., Scientific Discipline, Air, Environmental Chemistry, Engineering, Chemistry, & Physics, Environmental Engineering, metal catalysts, nitrous oxide, catalytic oxidation, characterization of catalysts, catalyst formulations, catalysts, air pollution, silination studies, Nitric oxide, catalytic reduction

Progress and Final Reports:

  • 1996
  • 1997
  • Final Report