Cov khoom siv catalyst yog cov khoom siv porous substrate uas siv rau hauv kev lag luam tshuaj lom neeg thiab petrochemicals rau kev ua kom cov kua thiab cov pa roj ua cov khoom siv nruab nrab thiab cov khoom siv kawg. Cov chaw ua kom roj thoob ntiaj teb hloov cov kua, cov pa roj thiab cov khoom siv nruab nrab uas tshwm sim ntuj tsim mus rau hauv cov khoom siv tau xws li roj, tshuaj lom neeg, roj thiab roj nplua nyeem. Cov txheej txheem ua kom roj tawg suav nrog kev tawg cov hydrocarbons ntawm qhov kub thiab txias siab hauv qhov muaj cov catalyst.
Alumina yog siv rau hauv kev tsim cov catalyst carriers vim nws cov khoom kub inert, ua rau nws yog cov khoom siv substrate tsim nyog los tuav cov catalyst thaum tsis ua rau nws txoj haujlwm puas tsuaj thiab tsis cuam tshuam nrog cov tshuaj reactants. Cov qauv pore ntawm cov catalyst carrier yog qhov tseem ceeb heev hauv cov txheej txheem hydrocarbon cracking, vim nws yog qhov chaw uas cov tshuaj tiv thaiv yog catalyzed. Qee yam ntxwv ntawm cov khoom siv alumina raw, xws li qhov loj me ntawm cov khoom me me, tuaj yeem cuam tshuam rau qhov loj me ntawm cov pore thiab kev faib tawm thiab yog li ntawd kev sib xws yog qhov tseem ceeb rau kev ua kom muaj cov khoom siv substrate zoo.
Peb cov khoom muaj cov khoom faib tawm uas tswj tau qhov loj me ntawm cov khoom me me thiab cov cheeb tsam ntawm cov khoom kom sib xws kom ntseeg tau tias cov qauv ntawm cov qhov dej zoo txhua lub sijhawm. Peb kuj muab cov qib kev ntshiab sib txawv, tshwj xeeb tshaj yog hais txog cov ntsiab lus Na2O, kom ua tau raws li cov kev xav tau tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Xya Hli-24-2019