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Catalytic destruction of benzene (C6H6), a surrogate for organic hazardous air pollutants (HAPs) produced from coal combustion, was investigated using a commercial selective catalytic reduction (SCR) catalyst for evaluating the potential co-benefit of the SCR technology for reducing organic HAP emissions. Bench-scale experiments were performed using simulated coal combustion flue gases under a broad range of SCR reaction conditions. C6H6 was added at 1 or 17 ppm into the flue gas mixtures with different concentrations of sulfur dioxide (SO2), nitrogen oxide (NO), hydrogen chloride (HCl), and ammonia (NH3) to simulate the combustion of bituminous and sub-bituminous coals. The destruction of the C6H6 across the catalyst was measured by a total hydrocarbon analyzer and a resonance-enhanced multiphoton ionization time-of-flight mass spectrometer (REMPI-TOFMS) for the experiments with high (17 ppm) and low (1 ppm) concentrations of C6H6, respectively. The operating parameters of the SCR process, including the space velocity, temperature, and concentration of C6H6, were found to have a significant impact on the destruction of C6H6. The constituents of the flue gas had very little impact on the destruction, suggesting that the significant additional co-benefit of destruction of trace organic HAPs provided by the SCR process may be applicable to a wide variety of coals under different firing conditions. Destruction of C6H6 with high efficiencies is likely to occur concurrently with the reduction of NO during the SCR process without indication of carbon deposition on the catalyst.