Nkwadebe nkeultrafine obere ụwa oxides
Ngwakọta ụwa nke Ultrafine na-adịghị ahụkebe nwere oke ojiji dị ukwuu ma e jiri ya tụnyere ogige ụwa na-adịghị ahụkebe nwere oke urughuru n'ozuzu, na enwere nyocha ugbu a na ha.A na-ekewa ụzọ nkwadebe ahụ n'ime usoro siri ike, usoro mmiri mmiri, na usoro gas dị ka nchịkọta nke ihe ahụ si dị.Ka ọ dị ugbu a, a na-eji usoro mmiri mmiri eme ihe n'ọtụtụ ebe na ụlọ nyocha na ụlọ ọrụ iji kwadebe ntụ ntụ ultrafine nke ogige ụwa na-adịghị ahụkebe.Ọ na-agụnye usoro mmiri ozuzo, usoro sol gel, usoro hydrothermal, usoro template, usoro microemulsion na usoro alkyd hydrolysis, n'ime nke mmiri ozuzo kachasị mma maka mmepụta mmepụta ihe.
Usoro mmiri ozuzo bụ ịgbakwunye mmiri mmiri na ngwọta nnu ígwè maka mmiri ozuzo, wee nyochaa, saa, kpoo na ikpo ọkụ iji nweta ngwaahịa ntụ ntụ.Ọ na-agụnye usoro mmiri ozuzo ozugbo, otu ụdị mmiri ozuzo na usoro ndakọrịta.N'ime usoro mmiri ozuzo nkịtị, ikuku oxides ụwa na-adịghị ahụkebe na nnu ụwa na-adịghị ahụkebe nwere radicals acid na-agbanwe agbanwe nwere ike nweta site na ọkụ na-asọpụta, na nha nha nke 3-5 μm.Ebe a kapịrị ọnụ erughị 10 ㎡/g na enweghị ihe pụrụ iche anụ ahụ na kemịkal.Usoro mmiri ozuzo ammonium carbonate na usoro mmiri ozuzo oxalic acid bụ ugbu a bụ ụzọ a na-ejikarị eme ihe maka imepụta ntụ ntụ oxide nkịtị, ma ọ bụrụhaala na agbanwere ọnọdụ usoro nke usoro mmiri ozuzo, enwere ike iji ha kwadebe ultrafine rare earth oxide powders.
Nnyocha egosiwo na isi ihe na-emetụta urughuru size na morphology nke obere ụwa ultrafine powders na ammonium bicarbonate ọdịda usoro na-agụnye ịta nke obere ụwa na ngwọta, ọdịda okpomọkụ, ọdịda gị n'ụlọnga ịta, wdg The ịta nke obere ụwa n'ime. ngwọta bụ isi ihe na-emepụta ntụ ntụ ultrafine gbasasịrị n'otu n'otu.Dị ka ihe atụ, na nnwale nke Y3 + mmiri ozuzo iji kwadebe Y2O3, mgbe uka ịta nke obere ụwa bụ 20 ~ 30g / L (gbakọọ site Y2O3), na ọdịda usoro na-eji ire ụtọ, na yttrium oxide ultrafine ntụ ntụ nwetara site na carbonate mmiri ozuzo. ihicha na ọkụ bụ obere, edo, na Mgbasa dị mma.
Na mmeghachi omume kemịkalụ, ọnọdụ okpomọkụ bụ ihe dị mkpa.Na n'elu nnwale, mgbe okpomọkụ bụ 60-70 ℃, ọdịda bụ ngwa ngwa, filtration bụ ngwa ngwa, ahụ bụ rụrụ na edo, na ha bụ ihu ọma okirikiri;Mgbe okpomọkụ mmeghachi omume dị n'okpuru 50 ℃, mmiri ozuzo na-etolite ngwa ngwa, na-enwekwu ọka na nha nha.N'oge mmeghachi omume ahụ, ọnụ ọgụgụ nke CO2 na NH3 na-ejupụta na-adị ntakịrị, na mmiri ozuzo dị n'ụdị na-egbuke egbuke, nke na-adịghị mma maka nzacha na ịsacha.Mgbe agbachara ya ọkụ n'ime yttrium oxide, a ka nwere ihe ndị na-egbochi ihe na-emekọ ihe nke ukwuu ma nwee oke urughuru.Nleta nke ammonium bicarbonate na-emetụtakwa nha nha nke yttrium oxide.Mgbe ntinye nke ammonium bicarbonate na-erughị 1mol / L, nha nha nke yttrium oxide nwetara dị obere na otu;Mgbe ntinye nke ammonium bicarbonate karịrị 1mol / L, mmiri ozuzo mpaghara ga-eme, na-eme ka agglomeration na akụkụ buru ibu.N'okpuru ọnọdụ kwesịrị ekwesị, enwere ike nweta nha nha nke 0.01-0.5 μ M ultrafine yttrium oxide powder.
N'ime usoro mmiri ozuzo oxalate, a na-agbakwunye ngwọta oxalic acid ka ọ bụrụ nke a na-agbakwunye amonia iji hụ na uru pH na-adịgide adịgide n'oge usoro mmeghachi omume, na-eme ka ihe na-erughị 1 μ M nke yttrium oxide ntụ ntụ.Nke mbụ, wụsa ngwọta yttrium nitrate na mmiri amonia iji nweta yttrium hydroxide colloid, wee gbanwee ya na ngwọta oxalic acid iji nweta nha nha na-erughị 1 μ Y2O3 ntụ ntụ nke m.Tinye EDTA na Y3 + ngwọta nke yttrium nitrate na ntinye nke 0.25-0.5mol / L, dozie pH na 9 na mmiri amonia, tinye ammonium oxalate, wee kpoo ngwọta 3mol / L HNO3 na ọnụego 1-8mL / min na 50 ℃ ruo mgbe mmiri ozuzo zuru na pH = 2.Enwere ike nweta ntụ ntụ Yttrium oxide nwere oke nha nke 40-100nm.
N'oge usoro nkwadebeultrafine obere ụwa oxidessite na usoro mmiri ozuzo, ogo dị iche iche nke agglomeration na-adịkarị mfe ime.Ya mere, n'oge usoro nkwadebe, ọ dị mkpa iji nlezianya na-achịkwa ọnọdụ njikọ ahụ, site n'ịgbanwe uru pH, na-eji ihe dị iche iche na-emepụta ihe, na-agbakwunye ndị na-ekesa, na ụzọ ndị ọzọ iji gbasaa ngwaahịa ndị dị n'etiti.Mgbe ahụ, a na-ahọrọ ụzọ ihicha kwesịrị ekwesị, n'ikpeazụkwa, a na-enweta ntụ ntụ ultrafine na-adịghị ahụkebe nke ọma site na calcination.
Oge nzipu: Eprel-21-2023