Qhov sib txawv tseem ceeb ntawm cov catalyst thiab nruab nrab yog tias cov catalyst muaj txiaj ntsig zoo thaum pib cov tshuaj tiv thaiv thiab rov tsim dua thaum kawg, qhov nruab nrab yog tsim thaum cov tshuaj tiv thaiv tshuaj thiab tsis muaj nyob rau thaum kawg ntawm cov tshuaj tiv thaiv..
Cov ntsiab lus catalyst thiab nruab nrab yog qhov tseem ceeb heev hauv cov tshuaj tiv thaiv. Lub catalyst yog cov tshuaj lom neeg uas tuaj yeem ua rau nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tas siv nws tus kheej, qhov nruab nrab yog ib qho molecule uas tsim los ntawm ob lossis ntau dua reactants thiab dhau mus ntxiv cov tshuaj tiv thaiv kom muab cov khoom kawg.
Catalyst yog dab tsi?
Ib tus catalyst yog cov tshuaj lom neeg uas tuaj yeem ua rau nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tas siv nws tus kheej. Yog li ntawd, qhov sib xyaw no tuaj yeem txuas ntxiv ua dua. Vim li no, tsuas yog ib qho me me ntawm cov catalyst yuav tsum muaj rau qee yam tshuaj tiv thaiv.
A catalyst muab txoj hauv kev rau cov tshuaj tiv thaiv tshuaj los ntawm kev txo lub zog ua kom muaj zog ntawm cov tshuaj tiv thaiv. Ntawm no, cov catalyst ua ke nrog cov reactant los tsim cov khoom nruab nrab, thiab tom qab ua tiav cov tshuaj tiv thaiv uas xav tau, cov catalyst tawm hauv nruab nrab thiab rov tsim dua.
Muaj ob hom catalysts; lawv yog homogeneous thiab heterogeneous catalysts. Nyob rau hauv homogeneous catalysts, cov molecules nyob rau tib theem li reactant molecules. Txawm li cas los xij, nyob rau hauv heterogeneous catalysts, cov molecules nyob rau hauv ib theem sib txawv rau cov reactant molecules. Enzymes yog ib qho piv txwv zoo ntawm cov khoom siv roj ntsha.
Tus Neeg Nruab Nrab yog dab tsi?
Ib qho nruab nrab yog ib qho molecule uas tsim los ntawm ob lossis ntau dua reactants thiab ua rau muaj kev cuam tshuam ntxiv los muab cov khoom kawg. Ib qho nruab nrab yog tsim nyob rau hauv ntau kauj ruam cov tshuaj tiv thaiv. Feem ntau, cov tshuaj lom neeg nyuaj yuav tsum tau ntau tshaj ib kauj ruam los ua kom tiav cov tshuaj tiv thaiv kom tau txais cov khoom kawg uas xav tau. Nyob rau hauv cov kev tshwm sim no, tag nrho cov tshuaj tiv thaiv cov kauj ruam uas tsis yog lub xeem kauj ruam muab intermediates; cov kauj ruam kawg muab cov khoom es tsis yog muab ib qho nruab nrab. Yog li ntawd, qhov nruab nrab tsis ruaj khov, thiab nws zoo li yuav ua rau muaj kev cuam tshuam ntxiv sai sai.
Feem ntau, cov intermediates tshwm sim hauv cov tshuaj tiv thaiv sib tov tsis tshua muaj vim lawv qhov tsis ruaj khov. Lawv muaj nyob rau lub sijhawm luv luv. Ntxiv mus, nws yog ib qho nyuaj heev los cais ib qho nruab nrab vim tias nws nyiam ua rau muaj kev cuam tshuam ntxiv. Hauv cov tshuaj tiv thaiv tshwj xeeb, tuaj yeem muaj ntau tus lej nruab nrab ntawm cov molecules hauv txhua kauj ruam cov tshuaj tiv thaiv. Qee zaum, nws nyuaj heev los txheeb xyuas cov molecules.
Peb tuaj yeem paub qhov txawv nruab nrab ntawm cov khoom nruab nrab thiab cov molecular vibrations. Cov no feem ntau muaj lub neej zoo sib xws thiab tsuas yog hloov pauv. Feem ntau, cov molecules no reactive heev. Ib qho piv txwv zoo yuav yog esterification ntawm diol, qhov twg monoester yog tsim nyob rau hauv thawj kauj ruam, thiab ib tug dioester yog tsim nyob rau hauv lub thib ob (kawg) kauj ruam.
Qhov txawv ntawm Catalyst thiab Intermediate yog dab tsi?
Qhov sib txawv tseem ceeb ntawm cov catalyst thiab nruab nrab yog tias cov catalyst muaj txiaj ntsig thaum pib cov tshuaj tiv thaiv thiab rov tsim dua thaum kawg, qhov nruab nrab yog tsim thaum cov tshuaj tiv thaiv tshuaj thiab tsis muaj nyob rau thaum kawg ntawm cov tshuaj tiv thaiv.. Ntxiv mus, catalysts yog ruaj khov, thaum intermediates tsis ruaj khov.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm cov catalyst thiab nruab nrab hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Catalyst vs Intermediate
Qhov sib txawv tseem ceeb ntawm cov catalyst thiab nruab nrab yog qhov catalyst tau ntxiv thaum pib ntawm cov tshuaj tiv thaiv thiab rov tsim dua thaum kawg ntawm cov tshuaj tiv thaiv qhov nruab nrab yog tsim thaum cov tshuaj tiv thaiv thiab tsis rov tsim dua thaum kawg ntawm cov tshuaj tiv thaiv..
