Biological platforms consume greenhouse gases at ambient temperatures, bypassing high-energy thermal catalysis.
A selective reduction catalyst system estimates downstream NOx concentration using transient extraction filters and upstream sensor data.
Ammonia slip catalyst converts excess ammonia to nitrogen using a platinum-palladium blend, suppressing harmful nitrous oxide byproducts.
Segmenting off-gas into parallel reactors with alternating catalyst replacement resolves efficiency loss from aging.
Replacing toxic vanadium with a mixed oxide support reduces N2O formation while maintaining ammonia selectivity.
Direct copper exchange replaces residual sodium ions in chabazite, eliminating multi-step processes and boosting hydrothermal stability.
A control unit adjusts ammonia-releasing reducing agent metering using model-based predictions and sensor feedback.
A fixed displacement pump dosing system uses a pressure sensor assembly to calculate flow rate based on detected pressure and stored calibration values.
A two-layer ammonia decomposition catalyst uses noble metal and zeolite layers to break down ammonia into nitrogen and water.
Fe-AEI zeolite catalyst decomposes nitrous oxide while maintaining hydrothermal stability and selectivity.
Pulsed reductant injection prevents buildup and reduces NOx emissions during low temperature operation by dynamically adjusting dosing cycles.
Segmented SCR layers in a bi-layer coating reduce nitrous oxide formation while protecting platinum from deactivation.
A Cu-Fe molecular sieve SCR catalyst prepared via ion exchange and impregnation.
Heated NiO catalyst removes N2O interference from gas samples, increasing radiocarbon detection sensitivity and enabling on-site monitoring.
Segmented conduits with varying diameters disperse reductants uniformly within space-constrained exhaust systems, improving NOx reduction efficiency.
Segmenting the zeolite membrane into a low-density layer and compact layer resolves the contradiction between permeability and defect occurrence.
Novel temperature swing adsorption cycle recovers co-adsorbed NF3 using inert purge gas.
A multifunctional catalyst combines platinum group metals on zirconia with vanadium-iron mixed oxides on titania to drive hydrocarbon oxidation and NOx reduction.
Base metal oxide catalyst resists hydrothermal degradation and water inhibition to maintain stability across a broad temperature range.