Sökning: "TPD"
Visar resultat 1 - 5 av 38 avhandlingar innehållade ordet TPD.
1. Kinetic Studies of NO Oxidation and Reduction over Silver-Alumina Catalyst
Sammanfattning : In line with growing concerns to manufacture more environmentally friendly vehicles, the use of internal combustion engines operating with oxygen excess or so called lean-burn engines will continue to be increasingly used. For lean-burn operation, reduction of NOx (NO+NO2) emissions is a major challenge and it is therefore urgently required to develop efficient and reliable NOx reduction aftertreatment systems for a wide variety of lean-burn or diesel engines. LÄS MER
2. Gas Adsorption and Permeation in MFI Zeolites and Membranes
Sammanfattning : The single and multi component gas adsorption behavior on silicalite-1 and cation exchanged MZSM-5 zeolites (M = H, Na, and Ba) were investigated by a step change response method. Temperature programmed desorption (TPD) and in-situ fourier transform infrared (FTIR) spectroscopy were also performed to study the type of adsorbed species and their thermal stabilities. LÄS MER
3. Study of H2/CO/CO2 adsorption on MFI zeolites for CO2 selective WGS membrane reactor concept
Sammanfattning : The single-component adsorption behavior of CO, CO2 and multi-component adsorption of H2/CO2, CO/CO2, and H2/CO/CO2 on silicalite-1 and cation exchanged MZSM-5 zeolites (M = H, Na, and Ba) were investigated by a step change response method. Temperature programmed desorption (TPD) and in-situ fourier transform infrared (FTIR) spectroscopy were also performed to study the type of adsorbed species and their thermal stabilities. LÄS MER
4. Characterization of catalysts with a temperature-programmed desorption method
Sammanfattning : .... LÄS MER
5. Investigation of La promoted Pd/BEA Performance for Passive NOx adsorption processes
Sammanfattning : Lean-burn combustion engines have been used to improve fuel efficiency by reducing fuel consumption. However, these engines face challenges in lean reduction of NOx for exhaust after-treatment systems. LÄS MER