Cov tshuaj tiv thaiv catalytic muaj plaub yam tseem ceeb, muab los ntawm lawv cov lus txhais, uas yog qhov tseem ceeb rau kev nkag siab txog kev ua haujlwm ntawm catalysts.
1. Catalysts tsuas tuaj yeem ua kom cov tshuaj tiv thaiv thermodynamically ua tau. Thaum tsim cov tshuaj tiv thaiv cov tshuaj tiv thaiv tshiab, cov tshuaj tiv thaiv thermodynamic yuav tsum ua ntej los txiav txim siab seb cov tshuaj tiv thaiv puas tuaj yeem siv tau.
2. Catalysts tsuas tuaj yeem ua kom muaj kev sib npaug ntawm qhov sib npaug; lawv tsis tuaj yeem hloov txoj haujlwm sib npaug (equilibrium tas li).
3. Catalysts muaj kev xaiv. Thaum cov tshuaj tiv thaiv tuaj yeem ua mus rau ntau tshaj ib qho kev taw qhia, cov catalyst nrawm tsuas yog ib qho ntawm lawv, yog li txhawb nqa ob qho tib si cov tshuaj tiv thaiv thiab kev xaiv hauv ib qho kev sib koom ua ke.
4. Catalyst lub neej. Catalysts tuaj yeem hloov tus nqi ntawm cov tshuaj tiv thaiv tshuaj. Qhov zoo tshaj plaws, catalysts tsis cuam tshuam los ntawm cov tshuaj tiv thaiv. Txawm li cas los xij, hauv cov tshuaj tiv thaiv tiag tiag, cov catalysts raug rau cov cua sov ntev thiab kev ua tshuaj lom neeg, ua rau kev hloov pauv physicochemical irreversible.
