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May I ask about the selection of select type for setting a reaction time?

2009-02-24View Original

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When specifying a reaction, what are the options available for selecting the reaction type? The dropdown menu includes emulsion, free-rad, ionic, LHHW, powerlaw, reac-dist, segment-bas, step-growth, user, and ziegler-nat. Emulsion refers to an emulsifier; free-rad refers to free-radical reactions; ionic refers to ionic reactions; reac-dist refers to reactive distillation. What are the remaining terms: LHHW, powerlaw, segment-bas, step-growth, user, ziegler-nat? I see that powerlaw is used quite often; what exactly does it mean here? And how is the input of the reaction formula at the back related to the type of reaction you choose? For a reaction whose reaction kinetics are already known, I see that both LHHW and powerlaw options are available. What is the difference between them? Thank you for the advice!
Reply #22009-02-24
Powerlaw should refer to a power-law reaction, while Ziegler-Nat is the Ziegler-Natta reaction
Reply #32009-02-24
Could you provide more details about the second floor? Thank you
Reply #42009-02-24
I checked, and all those mentioned by the original poster are kinetic models for reactions. The full name of LHHW is Langmuir-Hinshelwood-Hougen-Watson, while user-defined kinetic models are those created by the user himself. Information on these two types of models, as well as Power Law models, can be found in Aspen’s user guide under the section “Defined Reactions and Chemistry”; the original poster might want to take a look

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