Lwm qhov kev piav qhia yog tias cov catalysts koom nrog cov tshuaj tiv thaiv. Nyob rau hauv tag nrho cov tshuaj tiv thaiv, lub luag hauj lwm ntawm ib tug catalyst yog kom txo tau lub activation zog yuav tsum tau rau cov tshuaj tiv thaiv tshwm sim. Qhov tseem ceeb, nws hloov cov tshuaj tiv thaiv nyuaj rau hauv ob qho yooj yim tshwm sim tshuaj tiv thaiv (qhov opposite yog hu ua inhibitor). Hauv ob qhov kev cuam tshuam no, cov catalyst ua raws li cov tshuaj reactant hauv thawj cov tshuaj tiv thaiv thiab ua ib yam khoom hauv qhov thib ob. Yog li ntawd, los ntawm qhov kev xav ntawm tag nrho cov tshuaj tiv thaiv kab zauv, cov catalyst tseem tsis hloov ua ntej thiab tom qab cov tshuaj tiv thaiv.
Feem ntau hais lus, lub catalyst yog ib yam khoom uas koom nrog cov txheej txheem nruab nrab ntawm cov tshuaj tiv thaiv tshuaj, xaiv hloov tus nqi ntawm cov tshuaj tiv thaiv, thaum nws qhov ntau thiab cov khoom siv tshuaj tseem ceeb tsis hloov ua ntej thiab tom qab cov tshuaj tiv thaiv. Cov nyhuv ntawm cov catalyst hauv kev ua kom cov tshuaj tiv thaiv thiab coj mus rau cov tshuaj sib npaug sai li sai tau yog feem ntau hu ua catalysis, tab sis nws tsis hloov qhov sib npaug ntawm cov tshuaj tiv thaiv.
