I have a deoxygenation reaction of oleic acid using activated carbon as a catalyst with addition of drops of formic acid to enhance hydrogen gas production in an autoclave reactor with operating conditions of 300 ° C and operating pressure of 10 bar. When the temperature reaches 260 ° C, the pressure starts to rise rapidly and reaches 50 bar. what is the reason
The reaction produces gaseous products, the rate of formation of which increases with increasing temperature. Temperature also affects the pressure of the increasing amount of gaseous products.
What is the solution to implement the reaction without the pressure rising????
At 260 oC the saturation pressure of water is ~47 bar. Are you using water as your solvent? In that case the pressure increase you observe is simply caused by boiling of the solvent.
You can verify this hypothesis by performing an experiment with solvent only (no other chemicals).
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