Design Principes De Membranes Ceramic Alumina

Alumina seramiki membranes, i n’a fɔ danfaralan minnu tɛ fɛnɲɛnamaw ye, olu dabɔra ka da fɛnw dɔnniya, dugukolo sanfɛla chimie, ani farali fɛɛrɛbɔcogo ɲuman jɛlen kan, k’a laɲini ka sugandiliba sɔrɔ, ka ɲɛnamaya jan sɔrɔ, ani ka kemikaliya sabatili ɲuman sɔrɔ. Dilancogo sariyakolo jɔnjɔnw bɛ lamini fɛnw danfara la, mikrosɔrɔsiraw kɔlɔsili, ani sanfɛla baarakɛcogo.

A fɔlɔ, alimini seramiki membranes substrate material ye a ka c’a la -saniyalenba -Al2O3, k’a sababu kɛ a ka funteni sabatili ɲuman ye (a wulicogo bɛ se degere 2050 ma), masin fanga (a gɛlɛya ka bon ani a bɛ se ka sɔgɔsɔgɔ), ani a ka kemikaliya inertness (a ka se ka asidi ni alkali sɔgɔli kɛlɛ). Ni sintering kɛcogo kɔlɔsira (i n’a fɔ funteni, fiɲɛ ani waati), suman hakɛ ni a porosity bɛ se ka ladilan, o la, membrane ka permeability ni mechanical properties bɛ ɲɛ. Alumini membrane porous (porozɛni) jɔcogo cogoya bɛ Kɛ ni dɛmɛnan ye, 'tɛmɛsira-yɔrɔ ani danfara-yɔrɔ. Poro dilancogo hierarchique (ni makɔrɔporow bɛ dɛmɛyɔrɔ la min bɛ masin dɛmɛ di ani mikroporow bɛ faranfasiyɔrɔ la min bɛ se ka farali kɛ ka ɲɛ) o nafa ka bon kosɛbɛ.

Filanan, porozɛw hakɛ tilatilali ni u sanfɛla cogoyaw bɛ nɔ bila farali nafa la k’a ɲɛsin ɲɔgɔn ma. Fɛɛrɛw fɛ i n’a fɔ sol-gel, anodi oxydation, walima hydrothermal synthesis, pores hakɛ bɛ se ka kɔlɔsi tigitigi (0,01–10 μm), o b’a to a bɛnnen don microfiltration, ultrafiltration, ani hali nanofiltration ma. Surface charge manipulation (i n’a fɔ hydroxyl kuluw walima baarakɛkuluw donni) bɛ se ka ion walima molecule kɛrɛnkɛrɛnnenw ka adsorption sugandilen bonya, ka faranfasi tiɲɛni ɲɛ. Ka fara o kan, alumina membranes dense (min tɛ-porous walima nanoporous) bɛ se ka kɛ ka gazi faranfasi walima ka gazi saniya min funteni ka bon, ka da u ka doncogo dɔgɔyalenba kan ani u ka sugandiliba kan.

A laban na, aluminiyɔmu seramiki membranes dilanni fana ka kan ka jateminɛ kɛ u kɛcogo yɛrɛ la, i n’a fɔ funteni caman, fɛnw minnu bɛ fɛnw tiɲɛ kosɛbɛ, walima degunba cogoyaw. Doping (i n’a fɔ ZrO2 ni TiO2) bɛ se ka masinw ka baarakɛcogo ɲɛ ka taa a fɛ ani funteni bonya bɛnkan, o la, a bɛ baara kɛ waati janya. Kuma surun na, aluminiyɔmu seramiki membranes dilanni ye fɛnw, u jɔcogo ani u baarakɛcogo ɲɛnabɔli jɛlen de nɔ ye, ka fɛɛrɛ kuraw di minnu bɛ se ka da u kan, iziniw farali, sigida lakanani, ani fanga.