Kukonzekera kwaUltrafine wosowa kwambiri padziko lapansi
Ultrafine wosowa kwambiri padziko lapansi amakhala ndi magwiridwe ochulukirapo poyerekeza ndi zinthu zachilengedwe zomwe zimapangidwa padziko lapansi komanso zambiri, ndipo pakalipano pali kafukufuku. Njira zokonzekera zimagawidwa kukhala njira yolimba yolimba, njira yamadzimadzi ya madzi, ndi njira ya gasi molingana ndi vuto la chinthucho. Pakadali pano, njira yamadzimadzi imagwiritsidwa ntchito kwambiri mu labotaries ndi makampani kuti mukonze ufa wa ufa wamoyo wambiri. Zimaphatikizapo njira zomangira mpweya, bolo gel ther njira, njira ya templaulic, njira ya alkyd hydrolysis, yomwe mwa njira yomwe mpweya wambiri ndioyenera kwambiri pakupanga mafakitale.
Njira yopumira ndikuwonjezera njira yachitsulo yothetsera matumbo, kenako Fyuluta, kutsuka, youma ndi kutentha ndi kuwola ndi kutentha kwa ufa. Zimaphatikizapo njira yowongolera yowongolera, njira yolowera yolowera komanso njira yopumira. Munjira wamba, dziko lapansi wosowa kwambiri ndi zosowa zapadziko lapansi pansi okhala ndi ma radical osinthika omwe ali ndi ma radicals osasunthika amatha kupezeka powotcha, ndi tinthu kukula kwa 3-5 m. Dera lapamwamba limakhala lochepera 10 ㎡ / g ndipo alibe ndalama zapadera komanso zamankhwala. Njira ya ammonium carbonate mpweya wabwino kwambiri ndi njira zomwe zimagwiritsidwa ntchito popanga ufa wamba, ndipo bola ngati njira ya njira ya mpweya imasinthira, imatha kugwiritsidwa ntchito kukonza ufa wadziko lapansi wosowa.
Kafukufuku wasonyeza kuti zinthu zazikulu zomwe zikukhudza tinthu tambiri ndi morfuology ya ufa wapadziko lapansi mu njira yothetsera zinthu zachilengedwe, etc. Kuchulukitsa kwa dziko lapansi. Mwachitsanzo, poyesa kwa Y3 + yokonzekera y2o3, pomwe misa ikuluikulu ya anthu 20 ~ ~ l
Mu mankhwala zimachitika, kutentha ndi chinthu chofunikira. Pakuyesera pamwambapa, pomwe kutentha kumakhala 60-70 ℃, mpweya umachedwa, kufesa kuli kwachangu, tinthu tating'onoting'ono timakhala omasuka komanso yunifolomu; Kutentha kwanyengo kumakhala pansi pa 50 ℃, mafomu amtunduwu mwachangu, okhala ndi mbewu zambiri komanso tinthu tating'ono tating'ono. Pakuchita, kuchuluka kwa co2 ndi nh3 kusefukira kumakhala kocheperako, ndipo mpweya wabwino uli mu mawonekedwe omata, omwe sioyenera kusefa komanso kutsuka. Pambuyo powotchedwa ytraium oxide, pakadali zinthu zobisika zomwe zimapangitsa kuti mukhale ndi tinthu tating'ono tomwe timakhala. Kukhazikika kwa ammonium bicarbonate kumakhudzanso tinthu tating'onoting'ono ta yttrikaum oxide. Pamene ndende ya ammonium bicarborbonate imakhala yocheperako 1mol / l, yomwe ili ndi yttraum oxide kukula kwa tinthu ndi yaying'ono komanso yunifomu; Pamene ndende ya ammonium bicarbonate imaposa 1mol / l, mpweya wakomweko udzachitika, akuyambitsa kugwera ndi tinthu tambiri. Pansi pazinthu zoyenera, kukula kwa tinthu tating'onoting'ono 0,01-0.5 chitha kupezeka μ m ultrafine Yttrium oxide ufa.
Mu njira yotsatsira oxaalate, yankho la oxalic acid limawonjezeredwa pomwe ammonia amawonjezeredwa kuti awonetsetse phindu la pH nthawi zonse, μ m wa ytrium oxadium oxide oxidi. Choyamba, Phatikizani ytraum nitrate yankho ndi ma ammonium a Ytttroxide Colloid, kenako sinthani ndi oxyroc aller kuti mupeze gawo lochepera 1 j2o3 ufa wa m. Onjezani EDTA ku Y. YNTRIum oxide oxide wokhala ndi kukula kwa 20-100nm ikhoza kupezeka.
Pa nthawi yokonzekeraUltrafine wosowa kwambiri padziko lapansiMwa njira yopepuka, madigiri angapo a kuphatikizika amakhala okonda kuchitika. Chifukwa chake, pokonzekera, ndikofunikira kuwongolera kaphatikizidwe kake, ndikusintha mtengo wa pH, pogwiritsa ntchito matepi osiyanasiyana, kuwonjezera osamwa, ndi njira zina zoperekera zinthu zapakatikati. Kenako, njira zouma zoyenera zimasankhidwa, ndipo pamapeto pake, omwazika omwayikidwa padziko lapansi kwambiri padziko lapansi.
Post Nthawi: Apr-21-2023