Grantee Research Project Results
Bifunctional Catalysts for the Decomposition of Nitric Oxide
EPA Contract Number: 68D30137Title: Bifunctional Catalysts for the Decomposition of Nitric Oxide
Investigators: Wickman, David T.
Small Business: TDA Research Inc.
EPA Contact: Richards, April
Phase: II
Project Period: September 1, 1993 through September 1, 1996
Project Amount: $150,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1993) Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Nitrogen oxides (NO and NO2 or NOx) are among the most pervasive and difficult emissions to control. Although the decomposition reactions of both NO and NO2 are thermodynamically favored, there is no commercial catalytic process capable of decomposing NOx without the addition of a reducing gas. This is because the oxygen produced during the decomposition remains strongly chemisorbed on the catalyst, blocking access of the NO to the catalytic sites and reversibly poisoning the catalyst. NOx decomposition catalysts would be useful in stationary applications because the reducing gas and associated equipment contribute roughly one-half of the total clean-up cost. Such catalysts would also find ready acceptance in mobile applications as there is currently no practical catalytic method for NOx reduction in diesel exhaust.
TDA Research, Inc., proposes to synthesize and test coprecipitated bifunctional catalysts capable of carrying out the decomposition reaction. In Phase I, they modified a metal oxide catalyst to reduce the affinity of the catalyst on the unmodified catalyst. In Phase II, they will synthesize and test new catalyst formulations. They will perform additional characterization experiments with the goal of understanding the nature of the bifunctional catalyst effect in order to optimize the catalyst composition.
Supplemental Keywords:
Sustainable Industry/Business, RFA, Air, Scientific Discipline, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, Sustainable Environment, HAPS, Engineering, Chemistry, & Physics, cleaner production/pollution prevention, air toxics, New/Innovative technologies, novel catalyst systems, catalysts, Nitrogen dioxide, emissions, treatment, nitrogren oxides (NOx), Nox, zeolites, catalyst formulations, Nitrogen Oxides, emission controls, nitrogen dioxide (NO2), catalyst composition, control, Substitutes, emission control technologies, nitrogen oxides (Nox), air pollutants, Nitric oxide, gas turbines, air pollution, air pollutant precursors, acid rain, catalytic reductionProgress and Final Reports:
SBIR Phase I:
Bifunctional Catalysts for the Decomposition of Nitric OxideThe 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.