A catalyst for the decomposition of N2O under the conditions of the Ostwald process, comprising a carrier and a coating made of rhodium, rhodium/palladium or rhodium oxide applied thereto, ensures to yield NO with a particularly low content of laughing gas as the first process product.MOLLER ...
A catalyst for the decomposition of NO under the conditions of the Ostwald process, comprising a carrier and a coating made of rhodium, rhodium/palladium or rhodium oxide applied thereto, ensures to yield NO with a particularly low content of laughing gas as the first process product....
This indicates that platinum detachment or dissolution are more severe for porous carbon, while agglomeration and Ostwald ripening are dominant processes on solid carbon, which is schematically shown in Fig. 14. At this point it should be mentioned that the ECSA and mean particle diameter measurement...
Recently, much research has been carried out to find a suitable catalyst for the transesterification process during biodiesel production where heterogeneous catalysts play a crucial role. As homogenous catalysts present drawbacks such as slow reaction rate, high-cost due to the use of food grade oils...
K. Sintering of catalytic nanoparticles: particle migration or Ostwald ripening? Acc. Chem. Res. 46, 1720–1730 (2013). Article CAS Google Scholar Cargnello, M. et al. Efficient removal of organic ligands from supported nanocrystals by fast thermal annealing enables catalytic studies on well-...
In the catalytic combustion of ammonia on platinum-based gauzes to produce nitric acid using the Ostwald process,selecting the appropriate catalyst type and design is a key factor in maximizing ammonia yields.During the production of nitric oxide (NO),side reactions inevitably produce nitrous oxide ...
Also, deactivation of dispersed catalyst phases via Ostwald ripening can occur to different degrees depending on local time-temperature environments. The objective for the COMSOL Multiphysics® model is to address both of these issues, and others. The COMSOL Multiphysics® regeneration model...
Process for production of compound oxides and a second metal element is present in the aqueous phase instead of the, organic phase, the second metal element in the aqueous phase is incorporated into the resulting hydrolysis product of the first metal element, making it ... S Takeshima - US ...
Instability of the platinum electrocatalyst is one of the important causes of degradation in PEMFCs. Though it is still not fully understood, platinum nanoparticle degradation mechanisms [9] in a typical hydrogen fuel cell can be generally categorized into: (1) Ostwald ripening: dissolved Pt species...
The ebullated-bed type process is similar to a fluidized-bed reactor process in that the catalyst is maintained in random motion by the passage of hydrogen and hydrocarbons upward through the reactor, and catalyst can be withdrawn and added while the unit is on-stream. The heavy feed (usually...