1. Cov cuab yeej yooj yim
Molecular sieves yog crystalline ntxeem tau cov ntaub ntawv uas tsis tu ncua faib, niaj hnub nano - nplai micropore channels sab hauv. Piv nrog rau cov khoom ntxeem tau zoo tib yam, lawv muaj qhov ua tau zoo tswj tau qhov pore qhov ntau thiab tsawg thiab cov qauv kev ruaj ntseg. Nrog rau qhov zoo tshaj plaws thermal thiab hydrothermal tsis kam, lawv tuaj yeem tuav tau ntev - lub sijhawm ua haujlwm tsis tu ncua. Integrating molecular sieving, xaiv adsorption, ion pauv thiab catalysis raws li ib tug multifunctional khoom, molecular sieves pab raws li ib tug tseem ceeb hauv paus ntaub ntawv rau tshuaj, zog thiab ib puag ncig tiv thaiv kev lag luam.
2. Core Functions
Molecular sieves muab kev ntseeg siab molecular sieving kev ua tau zoo. Ua tsaug rau qhov ruaj khov pore qhov ntev, lawv paub txog kev xaiv kev sib cais raws li qhov loj me ntawm molecular: me me molecules diffuse rau hauv pore raws thiab tau txais adsorbed, thaum loj molecules raug thaiv, ua tiav cov khoom purification thiab cov khoom sib cais. Tsis tas li ntawd, lub hauv paus ntsiab lus ntawm lub hauv paus ntawm molecular sieves tsim muaj zog adsorption affinity rau cov polar tshuaj xws li dej thiab kua qaub gases, ua rau lawv haum rau qhuav qhuav thiab purification ntawm ntau yam nruab nrab systems.
Kev hloov kho los ntawm kev sib pauv ion tso cai rau kev hloov pauv ntawm qhov pore loj, qhov chaw acidity thiab adsorption muaj peev xwm kom phim cov txheej txheem sib txawv. Hloov kho molecular sieves tsim qhov chaw ruaj khov thiab nthuav tawm cov duab zoo dua - xaiv catalysis, coj cov tshuaj tiv thaiv rau cov khoom lag luam, txo qis cov khoom tsim tawm thiab txhim kho cov khoom siv raw kev hloov pauv thiab cov khoom xaiv. Coke sau rau ntawm qhov chaw catalyst thaum lub sijhawm muaj kev pabcuam tuaj yeem raug tshem tawm los ntawm kev kub siab -kub rov tsim dua tshiab, ua rau siv cov khoom siv rov ua dua tshiab.
3. Daim ntawv thov tseem ceeb
Hauv kev lag luam petrochemical,molecular sieves ua raws li cov tub ntxhais catalysts rau catalytic cracking, hydrocarbon isomerization thiab roj kho cov txheej txheem, dav siv nyob rau hauv hnyav roj lightening thiab tiav roj av zoo txhim kho. Hauv kev lag luam thee chemical, lawv cov duab zoo heev -cov khoom siv catalytic xaiv txhawb cov txheej txheem tseem ceeb suav nrog methanol- mus rau -olefin rau kev tsim cov khoom siv tshuaj lom neeg.
Rau kev kho roj,molecular sieves ua haujlwm ua thawj adsorbents rau lub cev qhuav dej ntawm kev lag luam roj, CO₂ thiab sulfide tshem tawm, nrog rau cov pa oxygen - cais nitrogen hauv cov roj refining workflows.
Hauv kev tiv thaiv ib puag ncig,lawv adsorb thiab catalytically decompose volatile organic tebchaw rau industrial flue gas purification kom tau raws li cov qauv emission, ua lub luag haujlwm tseem ceeb hauv kev tsim khoom huv si thiab kev txhim kho lub zog huv.