Selective catalytic oxidation of ammonia over LaMAl<sub>11</sub>O<sub>19−δ</sub> (M = Fe, Cu, Co, and Mn) hexaaluminates catalysts at high temperatures in the Claus process
Guoxia Jiang, Fenglian Zhang, Zheng Wei, Zhuo Wang, Yu Sun, Yumeng Zhang, Caihong Lin, Xin Zhang, Zhengping Hao
Abstract
A method for selective catalytic oxidation of ammonia at high temperature was proposed to remove the ammonia impurity in the Claus process. Cu substituted hexaaluminate catalysts achieved the highest N<sub>2</sub> yield at around 520 °C and the reaction followed the i-SCR mechanism.
Topics & Concepts
CatalysisAmmoniaClaus processChemistryYield (engineering)Inorganic chemistryImpurityMaterials scienceSulfurMetallurgyOrganic chemistryHydrogen sulfideCatalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsAmmonia Synthesis and Nitrogen Reduction