%0 Journal Article %T An Experimental Observation of the Thermal Effects and NO Emissions during Dissociation and Oxidation of Ammonia in the Presence of a Bundle of Thermocouples in a Vertical Flow Reactor %A Samuel Ronald Holden %A Zhezi Zhang %A Jian Gao %A Junzhi Wu %A Dongke Zhang %J Advances in Chemical Engineering and Science %P 250-264 %@ 2160-0406 %D 2023 %I Scientific Research Publishing %R 10.4236/aces.2023.133018 %X Ammonia (NH₃) dissociation and oxidation in a cylindrical quartz reactor has been experimentally studied for various inlet NH₃ concentrations (5%, 10%, and 15%) and reactor temperatures between 700 K and 1000 K. The thermal effects during both NH₃ dissociation (endothermic) and oxidation (exothermic) were observed using a bundle of thermocouples positioned along the central axis of the quartz reactor, while the corresponding NH₃ conversions and nitrogen oxides emissions were determined by analysing the gas composition of the reactor exit stream. A stronger endothermic effect, as indicated by a greater temperature drop during NH₃ dissociation, was observed as the NH₃ feed concentration and reactor temperature increased. During NH₃ oxidation, a predominantly greater exothermic effect with increasing NH₃ feed concentration and reactor temperature was also evident; however, it was apparent that NH₃ dissociation occurred near the reactor inlet, preceding the downstream NH₃ and H₂ oxidation. For both NH