Cov yam ntxwv ntawm particulate catalysts

Particulate catalysts muaj qhov tshwj xeeb saum npoo av thiab porosity, txhim kho cov tshuaj tiv thaiv zoo. Peb cov methanol-rau-aromatic catalysts thiab hydrogenation catalysts yog tag nrho cov tsim nyob rau hauv ib tug particulate daim ntawv, exhibiting zoo heev stability thiab selectivity. Ntawm lawv, cov khoom lag luam zeolite molecular sieve kuj muaj cov cim tshwj xeeb xws li FAU / MWW.

Particulate catalysts yog ib chav kawm tseem ceeb ntawm cov khoom siv dav hauv tshuaj, ib puag ncig, thiab lub zog. Lawv qhov tshwj xeeb particle morphology thiab catalytic kev ua tau zoo ua rau lawv yog ib feem tseem ceeb hauv ntau cov txheej txheem kev lag luam. Daim ntawv thov ntawm cov khoom siv catalysts feem ntau yog nyob ntawm lawv qhov chaw tshwj xeeb ntawm qhov chaw, zoo dispersibility, thiab catalytic kev ua haujlwm, uas tuaj yeem txo qis kev ua kom muaj zog thiab txhim kho cov tshuaj tiv thaiv thiab kev xaiv hauv tshuaj lom neeg.

Kev ua haujlwm catalytic ntawm particulate catalysts feem ntau yog los ntawm lawv qhov chaw ua haujlwm saum npoo av. Cov chaw no muaj peev xwm adsorb reactant molecules, txhawb kev tawg thiab tsim cov tshuaj tiv thaiv. Cov qauv tsim tshwj xeeb tsis yog tsuas yog ua rau thaj chaw sib cuag ntawm cov catalyst thiab reactants tab sis kuj pab txhawb kev ntws thiab dispersion hauv reactor, txhim kho kev hloov pauv huab cua. Tsis tas li ntawd, cov khoom siv hluav taws xob feem ntau muaj cov tshuab ua haujlwm siab, tiv thaiv lub cev hnav thiab tshuaj lom neeg corrosion thaum lub sij hawm cov txheej txheem tshuaj tiv thaiv, ncua lawv lub neej kev pab cuam.