Feem ntau, heterogeneous catalysts yog cov khib nyiab uas tau ntxiv rau hauv cov pa roj lossis kua tshuaj sib tov. Nyob rau hauv heterogeneous catalysis, cov reactants adsorb mus rau qhov chaw khi rau ntawm qhov chaw ntawm cov catalyst, thiab qhov muaj ntawm cov chaw tshuaj tiv thaiv no tuaj yeem txwv tus nqi ntawm cov tshuaj tiv thaiv heterogeneous.
Cov catalysts heterogeneous ua haujlwm li cas?
Heterogenous catalysts ua haujlwm feem ntau los ntawm tib lub tshuab. … Tom qab adsorption tau tshwm sim, cov reactants molecules thiab cov catalyst cuam tshuam, ua rau cov reactant molecules ntau reactive. Cov tshuaj tiv thaiv tseem ceeb tom qab ntawd tshwm sim los tsim cov khoom, uas yog tom qab ntawd desorbed los ntawm qhov chaw ntawm cov catalyst.
Dab tsi yog theem tseem ceeb hauv kev ua kom muaj txiaj ntsig?
Heterogeneous catalysis feem ntau suav nrog khoom cov theem catalysts thiab roj theem reactants Nyob rau hauv cov ntaub ntawv no, muaj ib lub voj voog ntawm molecular adsorption, tshuaj tiv thaiv, thiab desorption tshwm sim ntawm lub catalyst nto. Thermodynamics, huab hwm coj hloov mus, thiab hloov tshav kub cuam tshuam tus nqi (kinetics) ntawm cov tshuaj tiv thaiv.
Lub luag haujlwm ntawm catalyst hauv heterogeneous catalysis yog dab tsi?
Catalyst yog siv los nce tus nqi tshuaj tiv thaiv. Heterogeneous catalyst yog siv los nce tus nqi ntawm cov tshuaj tiv thaiv uas catalyst tsis nyob rau theem nrog reactants thiab cov khoom. (i) Diffusion ntawm reactants rau saum npoo ntawm catalyst.
Dab tsi yog heterogeneous catalysis muab piv txwv?
2. Heterogeneous catalysis: Catalysis nyob rau hauv uas lub catalyst nyob rau hauv ib theem txawv ntawm cov reactant hu ua Heterogeneous catalysis. Piv txwv li- Hauv kev sib cuag ntawm sulfuric acid Pt lossis V2O5 yogsiv.
