Hightemperature decomposition of N 2 O from the HNO 3 production: Process feasibility using a structured catalyst

0536194 - ÚFCH JH 2021 RIV GB eng J - Journal Article
Bernauer, Milan - Bernauer, B. - Sádovská, Galina - Sobalík, Zdeněk
Hightemperature decomposition of N 2 O from the HNO 3 production: Process feasibility using a structured catalyst.
Chemical Engineering Science. Roč. 220, JUL 2020 (2020), č. článku 115624. ISSN 0009-2509. E-ISSN 1873-4405
R&D Projects: GA ČR(CZ) GA14-10251S; GA MŠMT(CZ) EF16_013/0001821
Grant - others:GA MŠk(CZ) CZ.02.1.01/0.0/0.0/16_013/0001821
Institutional support: RVO:61388955
Keywords : n2o decomposition * monolith catalysts * oxide catalysts * laminar-flow * reduction * oxidation * washcoat * kinetics * reactors * zeolite
OECD category: Physical chemistry
Impact factor: 4.311, year: 2020
Method of publishing: Limited access

The high-temperature decomposition of N2O in a structured catalyst was studied using a full three-dimensional (3D) model in the temperature range 700–900 °C and high pressure (0.4–0.8 MPa), under realistic gas phase composition, i.e. with 1000 ppm of N2O, high concentrations of NO (9.5–10.5 mol%), O2 (4.5–5.0 mol%), and H2O (15.5–16.8 mol%). The kinetic data gathered from the previous study of the FeOx/Al2O3 catalyst displaying only medium activity were used as the input data. A single-channel 3D model without additional simplifications of fluid flow patterns and mass transfer in fluid and solid catalyst phases was employed to investigate the potential performance of a monolith reactor for N2O decomposition at high temperature regime. The model clearly predicted a relevant performance of the optimized honeycomb system based on such FeOx/Al2O3 catalyst.
Permanent Link: http://hdl.handle.net/11104/0314001