Hi,
We all know that the catalysts provide an alternative (lower energy) pathway for a reaction to occur. For example, the gas reforming reactions (say steam reforming of methane) are highly endothermic and the use of catalysts economize the reaction. But how does all this actually take place? I just want an explanation that can help me realize this phenomenon.
In absence of catalyst the gas molecules can collide at very high temperatures (>1000 oC) to form the products, but in presence of catalyst the same reaction is taking place at 600 oC. How this happens?
CH4 gets adsorbed on the catalyst surface and that facilitates the braking down of the C-H bonds.
The molecules are chemisorbed onto the surface which weakens the intermolecular bonds allowing a transtion complex to form which may lead to to the formation of the new species.
Thanks for replying Marius Pelmus Kanchan Mondal .
Could you kindly tell on what factors the formation of the transition phase depends in Steam reforming reaction?
Further, kindly clarify is it gonna be physical adsorption or chemisorption on catalyst's surface? Since the physical adsorption will decrease with increasing temperatures, whereas better conversions are achieved at high temperatures!
Thanks in advance!
It is chemisorbtion, as Kanchan Mondal specified. For more info on this topic please read the thesis sent in the previous message.
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