ILanthanum carbonate(i-lanthanum carbonate), i-molecular formula ye-La2 (CO3) 8H2O, ngokubanzi iqulethe inani elithile leemolekyuli zamanzi. Yinkqubo ye-crystal ye-rhombohedral, inokusabela nge-acids ezininzi, i-solubility 2.38 × 10-7mol / L emanzini kwi-25 ° C. Isenokuboliswa ngokushushu ibe yilanthanum trioxide kwi-900°C. Kwinkqubo yokubola kwe-thermal, inokuvelisa i-alkali. Kwinkqubo yokubola kwe-thermal kunokuvelisa i-alkali.ILanthanum carbonateinokuveliswa ngealkali metal carbonates ukwenza amanzi anyibilikayo carbonate ityuwa complex.ILanthanum carbonateI-precipitate inokuveliswa ngokudibanisa i-ammonium carbonate engaphezulu kancinci kwisisombululo esinyibilikayo setyuwa yelanthanum.
Igama lemveliso:ILanthanum carbonate
Ifomula yeemolekyuli:ILa2 (CO3) 3
Ubunzima bemolekyuli: 457.85
INOMBOLO YECAS. :6487-39-4
Imbonakalo:: Umgubo omhlophe okanye ongenambala, unyibilika ngokulula kwiasidi, awungeni moya.
Usebenzisa:.ILanthanum carbonatei-inorganic compound eyenziwe nge-lanthanum element kunye ne-carbonate ion. Ibonakala ngokuzinza okuqinileyo, ukunyibilika okuphantsi kunye neempawu zeekhemikhali ezisebenzayo. Kwishishini, i-lanthanum carbonate ingasetyenziswa ngokubanzi kwi-ceramics, i-electronics, iyeza kunye nezinye iindawo. Phakathi kwabo, i-lanthanum carbonate idlala indima ebalulekileyo kwimboni ye-ceramics, ingasetyenziselwa njenge-pigment, i-glaze, izongezo zeglasi, njl.; kwintsimi ye-electronics, i-lanthanum carbonate inokulungiswa kunye ne-conductivity ephezulu yombane, ukushisa okuphantsi kwe-sintering yezinto ezinamandla, ezilungele ukuveliswa kwee-capacitors eziphezulu ze-energy-density, ezisetyenziselwa ukuveliswa kwe-ternary catalysts, izongezo ze-carbide; kwinkalo yamayeza,lanthanum carbonatesisongezo esiqhelekileyo kumayeza, kwaye sinokusetyenziswa ukunyanga kwintsimi yeyeza,lanthanum carbonatesisongezelelo seziyobisi esiqhelekileyo, esinokusetyenziswa kunyango lwe-hypercalcemia, i-hemolytic uremic syndrome kunye nezinye izifo, kwaye ifanelekile kunyango lwe-hyperphosphatemia kwizigulane zesifo sezintso. Ngelizwi elinye,lanthanum carbonateinemisebenzi emininzi kwaye isetyenziswa kakhulu kwishishini lale mihla lemichiza, isayensi yezinto eziphathekayo, amayeza kunye nezinye iinkalo.
Ukupakisha: 25, 50 / kg, 1000kg / tonne kwingxowa elukiweyo, 25, 50kg / umphanda kwikhadibhodi igubu.
Iveliswa njani:
ILanthanum carbonateiyona nto iphambili yokuvelisa i-lanthanum oxide [1-4]. Ngemeko engxamisekileyo yokhuseleko lokusingqongileyo, i-ammonium bicarbonate, njenge-precipitant yendabuko yokulungiswa kwe-lanthanum carbonate, isetyenziswe kakhulu kwimveliso yemizi-mveliso [5-7], nangona ineenzuzo zexabiso eliphantsi lokuvelisa kunye nomxholo ophantsi wokungcola. yecarbonate efunyenweyo. Nangona kunjalo, ngenxa ye-eutrophication ye-NH + 4 kumanzi amdaka emizi-mveliso, enempembelelo enkulu kwindalo esingqongileyo, isixa seetyuwa ze-ammonium ezisetyenziswa kushishino lubekwe phambili iimfuno ezingqongqo. Njengenye precipitants eziphambili, sodium carbonate, xa kuthelekiswa ammonium bicarbonate, ekulungiselelenilanthanum carbonate in inkqubo yamanzi amdaka amashishini ngaphandle kwe-ammonia, ukungcola kwe-nitrogen, kulula ukujongana nayo; xa kuthelekiswa ne-sodium bicarbonate, ukuziqhelanisa nokusingqongileyo kunamandla [8 ~ 11].ILanthanum carbonatekunye nesodium carbonate njenge-precipitant yokulungiswa kwe-low-sodium enqabileyo yomhlaba i-carbonate ayifane ixelwe kuncwadi, eyamkela iindleko eziphantsi, ukusebenza okulula kwendlela yokutyisa imvula, kunye ne-sodium ephantsi.lanthanum carbonateilungiswa ngokulawula uthotho lweemeko zokusabela.
Imigqaliselo yothutho lwelanthanum carbonate: Izithuthi zokuthutha kufuneka zixhotyiswe ngeentlobo ezifanelekileyo kunye nobuninzi bezixhobo zokucima umlilo kunye nokuvuza kwezixhobo zonyango olungxamisekileyo. Akuvumelekanga ngokungqongqo ukuxuba kunye nokuthutha kunye ne-oxidizers kunye neekhemikhali ezidliwayo. Umbhobho wokukhupha wesithuthi esithwala imithwalo kufuneka uxhotyiswe nge-flame retardant. Xa iilori zetanki zisetyenziselwa ukuthutha, kufuneka kufakwe amakhonkco aphantsi komhlaba. Ukuze kuncitshiswe umbane ongatshintshiyo oveliswe yi-vibration, kunokwenzeka ukuba kufakwe izahluli zemingxuma kwitanki. Akuvumelekanga ukulayisha okanye ukukhulula izixhobo zoomatshini kunye nezixhobo ezixhomekeke kwiintlantsi. Ehlotyeni kusasa nangokuhlwa ukuthutha kulungile, kwinkqubo yokuthutha, ukukhusela ilanga nemvula kunye nokushisa okuphezulu. Hlala kude nomthombo womlilo, umthombo wobushushu kunye nendawo yobushushu obuphezulu ngexesha lokumisa. Ukuthuthwa kweendlela kufuneka kuqhutywe ngokuhambelana neendlela ezimiselweyo, kwaye akufanele ziyeke kwiindawo zokuhlala kunye neendawo ezinabantu abaninzi. Uthutho lukaloliwe aluvumelekanga ukutyibilika. Ukuthuthwa ngobuninzi ngeenqanawa zokhuni okanye zesamente akuvumelekanga ngokungqongqo. Iimpawu zengozi kunye nezaziso ziya kuthunyelwa kwiindlela zothutho ngokuhambelana neemfuno zothutho.
Iimpawu ezibonakalayo kunye neekhemikhali (%).
| ILa2(CO3)33N | ILa2(CO3)34N | ILa2(CO3)35N | |
| I-TREO | 45.00 | 46.00 | 46.00 |
| La2O3/TREO | 99.95 | 99.99 | 99.999 |
| Fe2O3 | 0.005 | 0.003 | 0.001 |
| SiO2 | 0.005 | 0.002 | 0.001 |
| CaO | 0.005 | 0.001 | 0.001 |
| SO42- | 0.050 | 0.010 | 0.010 |
| 0.005 | 0.005 | 0.005 | |
| Cl- | 0.040 | 0.010 | 0.010 |
| 0.005 | 0.003 | 0.003 | |
| Na2O | 0.005 | 0.002 | 0.001 |
| PbO | 0.002 | 0.001 | 0.001 |
| Uvavanyo lokunyibilika kweAcidi | icacile | icacile | icacile |
Qaphela:Iimveliso zinokuveliswa kwaye zipakishwe ngokweenkcukacha zomsebenzisi.
Ixesha lokuposa: Apr-08-2024