In-field heat treatments of a solid-liquid Mn/Ga diffusion couple were conducted at 573 and 673 K with without magnetic field 5 T to investigate effects on the phase formation. Formation β-Mn, Mn3Ga, γ-MnGa, λ-MnGa, Mn2Ga5, MnGa4 phases was observed. The obtained results indicated that reaction growth λ-MnGa Mn2Ga5 proceeded by diffusion-controlled process for both 0 T. We confirmed suppressed ...

Reaction-induced changes of the morphology of a Pt foil catalyst during ammonia oxidation were investigated in a temperature-controlled way for partial pressures of oxygen and ammonia around 4.5 and 3 kPa, respectively, and at temperatures between 20 and 700 8C. The presence of the feed mixture (ammonia and oxygen) was required to induce surface roughening. Moreover, the reaction temperature co...

the cellular automata method has been used to simulate the pattern formation of the schlögl model as a bistable reaction-diffusion system. both microscopic and macroscopic cellular automata approaches have been considered and two different methods for obtaining the probabilities in the microscopic approach have been mentioned. the results show the tendency of the system towards the more stable ...

the electrocatalysis of the oxygen reduction reaction (orr) on carbon supportedpt-v (1:1) catalyst in polymer electrolyte fuel cells (pefc) was investigated. atan oxygen pressure of one atm an enhanced electrocatalytic property of pt-v/ccompared with pt/c is revealed. these results indicate the occurrence of adifferent electrocatalytic mechanism for the orr on pt/c and pt-v/c. anincrease of mas...

ABSTRACT The successful development and application in industry of methanol-to-olefins (MTO) process brought about an innovative efficient route for olefin production via non-petrochemical resources also attracted attention C1 chemistry zeolite catalysis. Molecular sieve catalysts with diversified microenvironments embedding unique channel/cavity structure acid properties, exhibit demonstrable ...

the electrocatalysis of the oxygen reduction reaction (orr) on carbon supportedpt-v (1:1) catalyst in polymer electrolyte fuel cells (pefc) was investigated. atan oxygen pressure of one atm an enhanced electrocatalytic property of pt-v/ccompared with pt/c is revealed. these results indicate the occurrence of adifferent electrocatalytic mechanism for the orr on pt/c and pt-v/c. anincrease of mas...