Cov yam ntxwv ntawm cov adsorbents sib txawv
Cov pa roj carbon ua kom muaj zog:Nws muaj cov qauv nplua nuj microporous thiab mesoporous, nrog rau thaj chaw tshwj xeeb ntawm kwv yees li 500-1000m2 / g, thiab qhov faib tawm ntawm qhov loj me feem ntau ntawm 2-50nm. Cov pa roj carbon activated feem ntau vam khom lub zog van der Waals tsim los ntawm cov adsorbate los tsim cov adsorption, thiab feem ntau yog siv rau kev adsorption thiab tshem tawm cov organic compounds, cov organic hydrocarbon hnyav, thiab cov deodorants;
Lub tshuab nqus molecular:Nws muaj cov qauv microporous pore nrog thaj chaw tshwj xeeb ntawm kwv yees li 500-1000m2 / g, feem ntau yog tsim los ntawm micropores, nrog rau qhov faib loj ntawm 0.4-1nm. Cov yam ntxwv adsorption ntawm molecular sieves tuaj yeem hloov pauv los ntawm kev kho lawv cov qauv, cov khoom sib xyaw, thiab hom kev sib npaug cations. Molecular sieves feem ntau vam khom cov qauv pore thiab Coulomb force field ntawm cov equilibrium cations thiab molecular sieve framework los tsim adsorption. Lawv muaj kev ruaj khov thermal thiab hydrothermal zoo thiab siv dav hauv kev sib cais thiab kev ntxuav ntawm ntau yam roj thiab kua theem. Thaum siv ua adsorbents, molecular sieves muaj kev xaiv muaj zog, qhov tob adsorption siab, thiab muaj peev xwm adsorption loj;
Silica gel:Cov tshuaj adsorbent silicone muaj thaj tsam tshwj xeeb ntawm li 300-500m2 / g, feem ntau yog mesoporous, nrog rau qhov faib tawm ntawm 2-50nm. Sab hauv ntawm nws cov kav dej pore muaj ntau pawg hydroxyl nto, feem ntau yog siv rau kev ziab adsorption thiab kev nqus siab kom tsim CO2;
Alumina ua kom nquag:Nrog rau thaj chaw tshwj xeeb ntawm 200-500m2 / g, nws feem ntau yog mesoporous thiab muaj qhov faib tawm ntawm 2-50nm. Nws yog siv rau kev ziab, dehydration, acidic pov tseg roj purification, thiab lwm yam.
Lub sijhawm tshaj tawm: Cuaj hlis-26-2023