Related Experiment Video
Updated: Jul 4, 2026

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Simulation-Guided Optimization of NH3/H2 Cocombustion over a CuO Catalyst: Achieving High-Efficiency and near-Zero
JeongHyun Cho1, Jimin Yun1, Minjae Kim1
1Department of Chemical Engineering, Myongji University, Yongin 17058, Republic of Korea.
Abstract:
Ammonia (NH3) is a promising carbon-free fuel, but its industrial application is challenged by low reactivity and substantial nitrogen oxide (NOx) emissions. This study proposes a simulation-guided reactant optimization strategy to achieve high-efficiency NH3 combustion with exceptional nitrogen (N2) selectivity. Chemical kinetic modeling using Chemkin-Pro elucidated intrinsic mechanistic bottlenecks: while hydrogen (H2) acts as a promoter, excessive H2 functions as a radical scavenger by preferentially consuming OH radicals, whereas excess oxygen (O2) accelerates the deep oxidation of amine intermediates toward NOx. Guided by these mechanistic insights, we experimentally validated this strategy over a CuO catalyst, where surface reactions closely mirrored gas-phase radical trends. Specifically, H2 functioned as a critical chemical promoter, generating surface-active species that triggered low-temperature ignition. Furthermore, the catalyst exhibited robust activity under O2-lean conditions (XO2 = 0.7), likely due to the rapid saturation of surface active sites, effectively suppressing deep oxidation pathways without sacrificing reactivity. Under the optimized conditions (XH2 = 3 and XO2 = 0.7), the CuO system achieved complete NH3 conversion at 500 °C with > 99% N2 selectivity at 600 °C. These results demonstrate that synergistically coupling radical-controlled fuel composition with selective catalytic oxidation provides a robust pathway for developing eco-friendly NH3 power systems.
More Related Videos
Related Concept Videos
Heterogeneous Catalysis
Turnover Number and Catalytic Efficiency
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion. The...
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
Combustion Energy: A Measure of Stability in Alkanes and Cycloalkanes
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified petroleum gas (LPG), fuel oil, gasoline, diesel fuel, and...
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Catalysis

