Qhov sib txawv tseem ceeb ntawm qhov zoo thiab qhov tsis zoo yog qhov zoo catalysts yog cov khoom muaj peev xwm ua kom cov tshuaj tiv thaiv nce ntxiv, qhov tsis zoo catalysts yog cov khoom muaj peev xwm txo qis cov tshuaj tiv thaiv.
A zoo catalyst yog ib yam khoom uas tuaj yeem nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tau koom nrog lossis noj hauv cov txheej txheem tshuaj tiv thaiv. Ib qho tsis zoo catalyst, ntawm qhov tod tes, yog ib yam khoom uas tuaj yeem txo tus nqi ntawm cov tshuaj tiv thaiv yam tsis tau noj thaum lub sij hawm cov tshuaj tiv thaiv.
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. Qhov sib xyaw no tuaj yeem ua txuas ntxiv mus ntxiv hauv cov tshuaj tiv thaiv tshuaj. Yeej, muaj plaub hom catalysts: homogenous catalysts, heterogeneous catalysts, heterogenized homogenous catalysts, thiab biocatalysts.
Peb tseem tuaj yeem faib lawv ua qhov zoo thiab tsis zoo catalysts raws li lawv cov txiaj ntsig ntawm tus nqi ntawm cov tshuaj tiv thaiv.
Dab tsi yog Qhov Zoo Tshaj Plaws?
Ib qho zoo catalyst tuaj yeem piav qhia tias yog ib yam khoom uas tuaj yeem nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tau koom nrog lossis noj hauv cov txheej txheem tshuaj tiv thaiv. Cov tshuaj no tuaj yeem ua rau nce cov tshuaj tiv thaiv lossis cov tshuaj tiv thaiv ceev los ntawm kev txo qis cov tshuaj tiv thaiv kev ua kom lub zog. Lub decomposition ntawm poov tshuaj chlorate nyob rau hauv lub xub ntiag ntawm manganese dioxide catalyst (MnO2) yog ib qho piv txwv ntawm hom zoo catalyst.
Daim duab 01: Catalysis Reaction Progress
Vim tias cov catalysts zoo tuaj yeem ua rau cov tshuaj tiv thaiv nce ntxiv, lawv tuaj yeem ua rau nce cov txiaj ntsig ntawm cov tshuaj tiv thaiv tshuaj. Kev nce cov tshuaj tiv thaiv ua rau muaj qhov nce ntawm cov khoom muab los ntawm cov tshuaj tiv thaiv ib lub sijhawm.
Dab tsi yog qhov tsis zoo Catalyst?
Ib qho tsis zoo catalyst tuaj yeem piav qhia tias yog ib yam khoom uas tuaj yeem txo tus nqi ntawm cov tshuaj tiv thaiv yam tsis tau noj thaum lub sijhawm cov tshuaj tiv thaiv. Qee zaum, cov tshuaj tiv thaiv tuaj yeem rov qab los ntawm qhov muaj cov khoom txawv teb chaws uas paub tias yog cov catalysts tsis zoo. Ib qho piv txwv ntawm hom catalyst no yog phosphoric acid, uas ua raws li qhov tsis zoo catalyst kom txo qis cov tshuaj tiv thaiv ntawm decomposition ntawm hydrogen peroxide. Tsis tas li ntawd xwb, peb tuaj yeem hais tias cawv kuj tuaj yeem ua haujlwm ua cov tshuaj tiv thaiv tsis zoo.
Ntxiv mus, cov catalysts tsis zoo tuaj yeem txo cov txiaj ntsig ntawm cov tshuaj tiv thaiv tshuaj vim tias lawv tuaj yeem txo cov tshuaj tiv thaiv. Kev txo qis cov tshuaj tiv thaiv ua rau txo qis ntawm cov khoom muab los ntawm cov tshuaj tiv thaiv ib lub sijhawm.
Qhov txawv ntawm qhov zoo thiab qhov tsis zoo yog dab tsi?
Yeej, muaj plaub hom catalysts: homogenous catalysts, heterogeneous catalysts, heterogenized homogenous catalysts, thiab biocatalysts. Txawm li cas los xij, tuaj yeem muaj qhov zoo thiab tsis zoo catalysts ib yam nkaus, raws li cov catalyst cov nyhuv ntawm cov tshuaj tiv thaiv. Qhov sib txawv tseem ceeb ntawm qhov zoo thiab qhov tsis zoo catalyst yog qhov zoo catalysts yog cov khoom muaj peev xwm ua kom cov tshuaj tiv thaiv nce ntxiv, qhov tsis zoo catalysts yog cov khoom muaj peev xwm txo qis cov tshuaj tiv thaiv. Ib qho zoo catalyst ua haujlwm los ntawm kev txo qis lub zog ua kom ceev cov tshuaj tiv thaiv; Txawm li cas los xij, qhov tsis zoo catalyst tsis tuaj yeem txo lub zog ua kom qis, yog li cov tshuaj tiv thaiv qis dua.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo catalyst nyob rau hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Positive vs Negative Catalyst
Peb tuaj yeem faib cov catalysts ua cov catalysts zoo thiab tsis zoo raws li lawv cov txiaj ntsig ntawm cov tshuaj tiv thaiv kab mob. Qhov sib txawv tseem ceeb ntawm qhov zoo thiab qhov tsis zoo catalyst yog qhov zoo catalysts yog cov khoom uas muaj peev xwm nce cov tshuaj tiv thaiv, qhov tsis zoo catalysts yog cov khoom uas muaj peev xwm txo qis cov tshuaj tiv thaiv.
