Catalytic Reduction of Nitric Oxide in Net Oxidizing EnvironmentsEPA Contract Number: 68D10048
Title: Catalytic Reduction of Nitric Oxide in Net Oxidizing Environments
Investigators: Wright, John D.
Small Business: TDA Research Inc.
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1991 through March 1, 1992
Project Amount: $50,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1991) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , SBIR - Air Pollution , Small Business Innovation Research (SBIR)
Description:Nitrogen oxides (NO and NO, or NO.,) are among the most pervasive and difficult emissions to control. Although the decomposition of the major species (NO) is thermo-dynamically favored, there are no catalytic processes capable of decomposing NO. without the addition of a reducing gas. This is because the oxygen produced during the decompo- sition remains strongly chemisorbed on the catalyst, block- ing access of the NO to the catalytic sites and reversibly poisoning the catalyst. Because the reducing gas contributes roughly one-half of the total cleanup cost, a direct catalytic decomposition process which did not require the use of a reducing gas would be a major advance.
TDA Research, Inc., (TDA) proposes to develop substi- tute zeolites capable of carrying out this reaction. These materials desorb the oxygen at a lower temperature than do other materials, allowing the reaction to proceed. TDA will synthesize substitute zeolites and evaluate the performance of these materials under conditions representative of the exhaust of a gas turbine. Then TDA will develop improved catalysts through manipulation of both the structure and composition of the zeolite, as well as the catalytically active cations.