Topic
Ammonia
About: Ammonia is a research topic. Over the lifetime, 16217 publications have been published within this topic receiving 271940 citations. The topic is also known as: NH3 & azane.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the catalytic activity in the reduction of NO by ammonia in the presence of oxygen (SCR process) is reported for CuO-TiO2 and for different catalysts belonging to the MgO-Fe2O3 system.
385 citations
TL;DR: In this paper, a variety of supported metal catalysts have been studied and the activation energies for the ammonia decomposition process varied from 17 to 22 kcal/mol depending upon the catalyst employed.
Abstract: Catalytic decomposition of ammonia has been investigated as a method to produce hydrogen for fuel cell applications. The absence of any undesirable by-products (unlike, e.g., COx, formed during reforming of hydrocarbons and alcohols) makes this process an ideal source of hydrogen for fuel cells. In this study a variety of supported metal catalysts have been studied. Supported Ru catalysts were found to be the most active, whereas supported Ni catalysts were the least active. The supports were found to play a profound role in the ammonia decomposition process. The activation energies for the ammonia decomposition process varied from 17 to 22 kcal/mol depending upon the catalyst employed. The activation energies of the supported Ir catalysts were found to be in excellent agreement with our recent studies addressing ammonia decomposition on single crystal Ir.
384 citations
TL;DR: In this paper, a new process of nitrification/denitrification via nitrite wais found to be available in half-technical experiences with high operation security, where the essential parameter for regulating the process is the concentration of free ammonia in the reactor.
378 citations
TL;DR: In this paper, a metal-organic framework-derived nitrogen-doped nanoporous carbon was used as an electrocatalyst for the nitrogen reduction reaction (NRR) by using renewable electricity.
373 citations
TL;DR: In this paper, the authors investigated the effect of ammonium nitrate on the SCR reaction in the presence of NO and showed that ammonium Nitrate can lead to the formation of NO 2.
369 citations