ʻO ka Puʻupuʻu Honua Laha ʻole: Lanthanum Oxide

Lanthanum oxide,molecular formulaLa2O3, kaumaha molekala 325.8091. Hoʻohana nui ʻia no ka hana ʻana i nā aniani optical precision a me nā fibers optical.

Waiwai kemika

Hiki ke hoʻoheheʻe ʻia i loko o ka wai a hiki ke hoʻoheheʻe ʻia i loko o nā waikawa e hana i nā paʻakai pili.

Hōʻike ʻia i ka lewa, maʻalahi ke komo i ke kalapona a me ka wai, e hoʻololi mālie i ka lanthanum carbonate.

ʻO ke ahilanthanum oxidehui pū me ka wai e hoʻokuʻu i ka nui o ka wela.

waiwai kino

ʻAno a me nā waiwai: ʻO ka pauka paʻa keʻokeʻo.

Māmā: 6.51 g/mL ma 25 ° C

Ka helu heheʻe: 2315 ° C, wahi hoʻolapalapa: 4200 ° C

Solubility: Hiki ke hoʻoheheʻe ʻia i loko o nā waikawa a me ka ammonium chloride, hiki ʻole ke hoʻoheheʻe ʻia i ka wai a me nā ketones.

Hana hana

1. ʻO ka mea maka no ke ʻano hoʻoheheʻe ʻia he ʻano hopena nitrate honua laha loa ma hope o ka wehe ʻana i ka cerium, aia ma kahi o 50% La2O3, nā huina o CeO2, 116-7% Pr6O5, a me 30% Nd2O3. Hoʻohui ʻia i loko o Σ Ua unuhi ʻia a hoʻokaʻawale ʻia mai nā honua ʻē aʻe me ka hoʻohana ʻana i ka phosphine extractant neutral, dimethyl heptyl methylphosphonate (P350), i loko o kahi ʻōnaehana kerosene P350 no nā pae 35-38. o ka unuhi ana. ʻO ke koena o ka hopena i loaʻa ka lanthanum i hoʻokaʻawale ʻia me ka amonia, hoʻoheheʻe ʻia me ka ʻakika oxalic, a laila kānana ʻia a puhi ʻia no ka loaʻa ʻana o kahi huahana o ka lanthanum oxide. Wehe ʻia mai ka lanthanum phosphate cerium ore a i hoʻomākaukau ʻia e ka puhi ʻana i ka lanthanum carbonate a i ʻole nitrate. Hiki ke loaʻa iā ia ma ka hoʻomehana ʻana a me ka decomposing i ka oxalate o ka lanthanum.

2. E kau i ka La (OH) 3 i loko o ka platinum crucible, maloʻo ma 200 ℃, puhi ma 500 ℃, a decompose ma luna o 840 ℃ no ka loaʻa ʻana o ka lanthanum oxide.

Palapala noi

Hoʻohana nui ʻia no ka hana ʻana i nā aniani optical precision a me nā fibers optical. Hoʻohana pū ʻia i ka ʻoihana uila e like me nā capacitors ceramic a me nā piezoelectric ceramic additives. Hoʻohana ʻia ia ma ke ʻano he mea maka no ka hana ʻana i ka lanthanum borate a ma ke ʻano he catalyst no ka hoʻokaʻawale ʻana a me ka hoʻomaʻemaʻe ʻana.

Ke kahua noi: Hoʻohana nui ʻia no ka hana ʻana i ke aniani aniani aniani, kiʻekiʻe refractive optical fiber board, kūpono no ka hana ʻana i nā kāmera, nā kāmela, nā lens microscope, a me nā prisms no nā mea hana optical kiʻekiʻe. Hoʻohana ʻia ia i ka hana ʻana i nā capacitors ceramic, piezoelectric ceramic dopants, a me nā mea luminescent X-ray e like melanthanum bromidepauda. Lawe ʻia mai ka lanthanum phosphate cerium ore a i ʻole i loaʻa ma ka puhi ʻana i ka lanthanum carbonate a i ʻole nitrate. Hiki ke loaʻa iā ia ma ka hoʻomehana ʻana a me ka decomposing i ka oxalate o ka lanthanum. Hoʻohana ʻia ma ke ʻano he catalyst no nā ʻano hopena like ʻole, e like me ka catalytic oxidation o carbon monoxide ke hoʻopaʻa ʻia me ka cadmium oxide, a me ka catalytic hydrogenation o ka carbon monoxide i ka methane ke hoʻopaʻa ʻia me ka palladium. Hiki ke hoʻohana ʻia ka Lanthanum oxide i hoʻopili ʻia me ka lithium oxide a i ʻole zirconia (1%) no ka hana ʻana i nā magnet ferrite. He mea hoʻoheheʻe koho maikaʻi loa ia no ka hui ʻana o ka methane e hana i ka ethane a me ka ethylene. Hoʻohana ʻia e hoʻomaikaʻi i ka hilinaʻi wela a me nā waiwai dielectric o ka barium titanate (BaTiO3) a me ka strontium titanate (SrTiO3) ferroelectrics, a me ka hana ʻana i nā mea fiber optic a me nā aniani optical.