He aha ka Cerium Oxide?

ʻO ka Cerium oxide he meaʻokoʻa ʻole me ke ʻano kemika CeO2, ʻeleʻele māmā a i ʻole ʻeleʻele melemele kōkua pauka. Density 7.13g/cm3, helu heheʻe 2397°C, hiki ʻole ke hoʻoheheʻe ʻia i ka wai a me ka alkali, hiki ke hoʻoheheʻe iki ʻia i ka waikawa. Ma kahi mahana o 2000 ° C a me kahi kaomi o 15MPa, hiki ke hoʻohana ʻia ka hydrogen e hoʻemi i ka cerium oxide e loaʻa ai ka cerium oxide. Ke kaʻawale ka mahana ma 2000 ° C a me ke kaomi ʻana ma 5MPa, ʻulaʻula iki ka cerium oxide, a ʻulaʻula. Hoʻohana ʻia ia e like me ka mea polishing, catalyst, catalyst carrier (auxiliary), ultraviolet absorber, fuel cell electrolyte, kaʻa exhaust absorber, electronic ceramics, etc.
ʻIke palekana
Ka paakai ocerium oxideHiki i nā mea o ka honua laha ke hoʻemi i ka maʻiʻo o ka prothrombin, hoʻopau iā ia, keʻakeʻa i ka hana o ka thrombin, precipitate fibrinogen, a hoʻopale i ka decomposition o nā pūhui phosphoric acid. Hoʻonāwaliwali ka ʻawaʻawa o nā mea ʻenekele honua me ka piʻi ʻana o ke kaumaha atomika.
ʻO ka inhalation o ka lepo cerium e hiki ke hoʻoulu i ka pneumoconiosis o ka hana, a hiki i kāna chloride ke hōʻino i ka ʻili a hoʻonāukiuki i ka mucous membrane o nā maka.
ʻO ka manaʻo kiʻekiʻe loa i ʻae ʻia: cerium oxide 5 mg / m3, cerium hydroxide 5 mg / m3, pono e hoʻohana ʻia nā masks kinoea i ka wā e hana ai, pono e mālama ʻia ka pale kūikawā inā loaʻa ka radioactivity, a pono e pale ʻia ka lepo mai ka lūlū ʻana.
ʻano ʻano
ʻO ka huahana maʻemaʻe he pauda kaumaha keʻokeʻo a i ʻole cubic crystal, a ʻo ka huahana haumia he melemele māmā a ʻulaʻula paha i ʻulaʻula ʻulaʻula (no ka mea, aia nā ʻāpana o ka lanthanum, praseodymium, etc.). Aneane hiki ole ke hooheheeia i ka wai a me ka waika. Māmā pili 7.3. Ka helu heheʻe: 1950°C, wahi hoʻolapalapa: 3500°C. ʻO ka ʻawaʻawa, ʻo ka median lethal dose (iole, waha) ma kahi o 1g/kg.
hale kūʻai
E mālama pono i ka ea.
ʻIkepili Kūlana
Māhele ʻia e ka maʻemaʻe: ka maʻemaʻe haʻahaʻa: ʻaʻole kiʻekiʻe ka maʻemaʻe ma mua o 99%, ka maʻemaʻe kiʻekiʻe: 99.9% ~ 99.99%, ka maʻemaʻe ultra-kiʻekiʻe ma luna o 99.999%
Hoʻokaʻawale ʻia e ka nui o ka ʻāpana: ka pauka, micron, submicron, nano
Nā ʻōlelo aʻoaʻo palekana: He mea ʻawaʻawa ka huahana, ʻono ʻole, ʻaʻole hoʻonāukiuki, palekana a hilinaʻi hoʻi, kūpaʻa i ka hana, ʻaʻole e pane me ka wai a me nā mea ola. He kiʻekiʻe kiʻekiʻe aniani clarifying agent, decolorizing agent a me chemical auxiliary agent.
hoʻohana
mea hoʻokahe. Catalyst no nā hoʻololi kūlohelohe. Ke kālailai hao a me ke kila e like me ka laʻana metala maʻamau. ʻO ka nānā ʻana i ka titration redox. Ke aniani hoʻoheheʻe ʻia. Vitreous enamel opacifier. nā mea hoʻopili wela.
Hoʻohana ʻia ma ke ʻano he mea hoʻohui i ka ʻoihana aniani, ma ke ʻano he mea wili no ke aniani kīʻaha, a he hopena anti-ultraviolet i nā mea hoʻonaninani. Ua hoʻonui ʻia i ka wili ʻana o ke aniani aniani, ka lens optical, a me ka paipu kiʻi, a ke pāʻani nei i nā kuleana o ka decolorization, clarification, a me ka absorption o nā kukuna ultraviolet a me nā kukuna electron o ke aniani.