Catalysts raug cuam tshuam los ntawm ntau yam hauv lub sijhawm siv thiab yuav poob lawv cov dej num nrawm lossis qeeb. Qhov ua rau ntawm catalyst deactivation yog complex. Nws tuaj yeem muab faib ua pawg hauv qab no:
1. Kev tsis ua haujlwm tas mus li
Lub active tivthaiv ntawm lub catalyst yog inactivated los ntawm qhov kev txiav txim (kev lom) ntawm tej yam txawv teb chaws Cheebtsam, feem ntau mus tas li inactivated. Feem ntau ntawm cov khoom txawv teb chaws no yog cov tshuaj tiv thaiv los yog kev sib pauv ion nrog cov khoom nquag ntawm cov catalyst, uas ua rau muaj kev hloov pauv hauv cov khoom nquag. Piv txwv li, acidic catalysts neutralized los ntawm alkalis, precious hlau catalysts yog lom los ntawm sulfides los yog nitrides, thiab lwm yam. Deactivation ntawm catalyst lom feem ntau manifests raws li ib tug ceev ceev ntawm kev ua si. Kev poob ntawm cov khoom xyaw nquag vim hnav lossis sublimation thaum siv kuj ua rau lub cev tsis muaj zog, uas feem ntau nyuaj rau rov qab los yooj yim.
2. Lub active tivthaiv yog them thiab maj mam inactivated, uas yog tsis mus tas li inactivation. Piv txwv li, cov pa roj carbon deposits generated thaum lub sij hawm cov txheej txheem cov tshuaj tiv thaiv npog lub active Cheebtsam los yog thaiv lub pores ntawm lub catalyst, yog li ntawd cov reactants tsis tuaj yeem tiv tauj nrog lub active Cheebtsam. Cov mulches no tuaj yeem raug tshem tawm los ntawm ib txoj kev, thiab yog tias lawv deactivated los ntawm cov pa roj carbon deposits, lawv tuaj yeem rov tsim dua los ntawm kev hlawv hluav taws.
3. Kev ua haujlwm tsis raug ua rau catalyst inactivation, xws li cov tshuaj tiv thaiv kub dhau, kev kub ntxhov siab hloov pauv ua rau muaj kev kub ntxhov lossis crushing ntawm lub txaj catalyst, thiab lwm yam., hom inactivation tsis tuaj yeem rov qab tau.
