While ammonia combustion produces zero $ ext{CO}_2$, what specific emission necessitates the integration of $ ext{NO}_x$ abatement technologies?
Answer
Nitrogen oxides ($ ext{NO}_x$)
Ammonia, despite being carbon-free, releases nitrogen oxides ($ ext{NO}_x$) during combustion, which requires specialized development and integration of abatement technologies into the exhaust systems.
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