Reaction Rates

Please login with a confirmed email address before reporting spam

Hello, I am using COMSOL 6.1 Reaction Engineering Module. I am modeling a reaction in the form of:

A-->B+C+D+... The reaction depicts the heat breakdown of a solid substance. I obtained the reaction kinetics [A, E] values from TGA measurements. When I use these numbers to define the reaction constant [k], the reaction does not occur. I receive a graph with the concentration of [A] represented by a fixed straight line and all products at zero. Has anyone ever modeled reactions using kinetic values from TGA data? Please help.

  • I also want my reaction rate to be temperature dependent. my temperature is rising from 0K to 800K and then stays at that point. I tried to identify temperature as a function but I couldn't include the function in the rate constant. COMSOL wont recognize it. If anyone has such success modeling these type of scenarios. I would be grateful to hear you thoughts.

Best Regards


1 Reply Last Post 2024年5月3日 GMT+2 09:02

Please login with a confirmed email address before reporting spam

Posted: 4 months ago 2024年5月3日 GMT+2 09:02

There is something fundamentally wrong if the reaction does not proceed. Hard to say without seeing the model.

There is something fundamentally wrong if the reaction does not proceed. Hard to say without seeing the model.

Reply

Please read thediscussion forum rulesbefore posting.

Pleaselog into post a reply.

Note that while COMSOL employees may participate in the discussion forum, COMSOL®software users who are on-subscription should submit their questions via theSupport Centerfor a more comprehensive response from the Technical Support team.

Baidu
map