Pseudo-boehmiteyog alumina siv lead ua. Nws yog ib theem crystalline tsim nyob rau hauv cov hluavtaws ntawm txhuas hydroxide. Nws yog qhov hloov pauv ntawm aluminium hydroxide. Nws cov khoom siv lead ua tsis tiav, thiab cov duab siv lead ua lub ntsej muag yog daim ntaub nyias nyias. Txij li cov txheej txheem pore pseudo-boehmite kuj tseem muaj feem xyuam nrog cov txheej txheem npaj, cov khoom siv lub cev ntawm cov khoom tau los ntawm cov txheej txheem sib txawv kuj sib txawv. Piv txwv, pseudo-boehmite npaj los ntawm nitric acid txoj kev muaj cov yam ntxwv ntawm nqaim pore loj faib; alkali dej nag txoj kev tuaj yeem siv los npaj carrier-Al2O3 cov cab kuj nrog lub qhov hws loj thiab thaj chaw loj hauv qab nruab nrab kom haum; thiab NaAlO2-CO2 txoj kev tuaj yeem tuaj yeem Pseudo-boehmite nrog cov pore loj dav faib tau.
Piv nrog aluminium hydroxide, pseudo-boehmite tsis tiav cov dej tsis sib xyaw crystalline thiab muaj ntau yam khoom tshwj xeeb. Piv txwv li, pseudo-boehmite lwg me me muaj cov qauv sib tshooj hauv lub network, qhov hws loj, thaj tsam tshwj xeeb thaj chaw, thiab cov tshuaj tsw qab colloidal hauv cov kua qaub. Thixotropy thiab hais txog. Tag nrho cov yam ntxwv no ua rau pseudo-boehmite muaj kev siv sib txawv kiag li rau txhuas hydroxide.
Nws tuaj yeem siv los ua cov ntawv ci rau lub ntiaj teb ib nrab hluavtaws Y-hom zeolite cracking catalysts, aluminosilicate refractory fiber khi, cawv dehydration ethylene catalysts, ethane deoxygenation catalysts, thiab lwm yam, tuaj yeem siv los ua catalyst nqa khoom, qhib alumina thiab lwm yam txhuas salts raw khoom. Cov khoom lag luam γ-Al2O3 yog dav siv los ua catalyst cab kuj, catalyst, adsorbent, thiab lwm yam tom qab muab calcined ntawm 400-700 ℃; tom qab calcination ntawm 1100-1200 ℃, nano α-Al2O3 tuaj yeem tau txais, uas yog dav siv los ua cov xim pleev xim, qib siab ceramics, kev lag luam petrochemical Kev ua haujlwm siab catalysts, submicron / nano abrasive cov ntaub ntawv thiab cov ntaub ntawv polishing, cov tshuaj pleev kom hniav zoo nkauj thiab inorganic membrane cov ntaub ntawv, thiab lwm yam, yog ib yam tshiab ntawm cov khoom siv nrog kev nthuav dav dav dav ntxiv.
1. Pseudo-boehmite cov lus piav qhia txog cov khoom lag luam: Cov khoom no tsis muaj tshuaj lom, tsis qab thiab ntxhiab tsw. Cov khoom ntub yog xim dawb, cov hmoov qhuav yog cov hmoov dawb dawb, pore loj faib tau yog yam, lub ntim loj, thiab cov dej nqus tau zoo. High radial purity, ua haujlwm zoo molding, thiab thixotropic gel yam ntxwv. Cov khoom muaj zoo dispersibility, yooj yim rau yaj nyob rau hauv muaj zog acid thiab muaj zog alkali daws, thiab kev ua tau zoo molding.
2. Ntim thiab ntim ntawm pseudo-boehmite: pseudo-boehmite yog tau ntim hauv cov hnab ntim khoom. Khaws rau hauv qhov chaw txias, qhov cua zoo, hauv cov tsev khaws khoom qhuav.
3. Lub ntsiab siv ntawm pseudo-boehmite:
Cov khoom lag luam no yog siv los ua cov khoom siv raw ntawm catalyst tus neeg nqa khoom alumina, xws li cov khoom siv raw ntawm hydrogenation catalyst, cov cab kuj ntawm hydrogenation catalyst thiab oxychlorination catalyst.
Nws tseem tuaj yeem raug siv los ua cov ntawv sau ua ke rau zeolite thiab silicate refractory fiber ntau cov khoom lag luam, xws li phau ntawv tiv thaiv rau cov khoom hluav taws xob uas tsis tshua muaj lub ntiaj teb Y-hom zeolite tawg catalysts.
Cov khoom no yog cov khoom siv zoo raw khoom rau kev tsim cov khoom sib txawv ntawm cov ntsev txhuas txhuas. Tom qab tsim, nws tuaj yeem siv raws li desiccant, adsorbent thiab catalyst cab kuj ntawm cov duab sib txawv.
1. Txhim kho cov xaiv ntawm cov txheej txheem cov khoom siv thiab siv high-efficiency fixed-chamber nqus lub tshuab lim rau kev ntxhua khaub ncaws thiab lim dej yog qhov tseem ceeb ntawm kev txo qis noj cov dej tshiab rau kev tsim cov pseudo-boehmite.
2. Qhov thib peb siv tau los siv rau cov khoom xyaw ntawm sodium aluminate daws kom txo cov sab nraud tawm sab nraud thiab txhim kho kev siv hluav taws xob kom huv. Nws yog ib qho kev ntsuas tseem ceeb los txo qis siv dej tshiab.
3. Kev tsim nyog nce qhov kub ntawm ntxuav cov dej kub hauv kev tsim khoom, tsim cov txheej txheem tsim nyog, thiab siv lub tshuab ua cua txias yog qhov tseem ceeb ntawm kev txo dej tshiab.
Pseudo-boehmite yog ib hom ntawm pseudo-boehmite nrog cov khoom tsis muaj colloidal muaju. Cov khoom lag luam 1, tsis muaj tshuaj lom, 2, tsis qab, 3, ntxhiab tsw, 4, siab siv lead ua theem purity, 5, zoo peptizing kev ua tau zoo, 6, muaj zog adhesion, 7, nrog cov yam ntxwv ntawm thixotropic gel. Pseudo-boehmite tuaj yeem siv dav hauv petrochemical, chiv, silicate khoom thiab kev tiv thaiv ib puag ncig kev lag luam.