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ʻElemu Honua Rare Magical: Lutetium
ʻO Lutetium kahi mea ʻokoʻa ʻole o ka honua me nā kumukūʻai kiʻekiʻe, nā mālama liʻiliʻi, a me nā hoʻohana palena ʻole. He palupalu a hiki ke hoʻoheheʻe ʻia me ka wai. ʻO nā isotopes kūlohelohe he 175Lu a me ka hapalua o ke ola o 2.1 × 10 ^ 10 mau makahiki β Emitter 176Lu. Hana ʻia ia ma ka hoʻemi ʻana iā Lu...Heluhelu hou aku -
ʻElemu Honua Rare Magical – Praseodymium
ʻO Praseodymium ke kolu o ka nui o ka lanthanide element i loko o ka papaʻaina manawa o nā mea kemika, me ka nui o 9.5 ppm i loko o ka ʻōpala, ʻoi aku ka haʻahaʻa ma mua o ka cerium, yttrium, lanthanum, a me scandium. ʻO ia ka ʻelima o nā mea nui loa i nā honua laha. Akā e like me kona inoa, ʻo praseodymium ...Heluhelu hou aku -
ʻO Barium ma Bolognite
arium, mea 56 o ka papa kau. ʻO ka barium hydroxide, ka barium chloride, ka barium sulfate… he mea maʻamau i nā puke kula kiʻekiʻe. I ka makahiki 1602, ua ʻike ka poʻe alchemist komohana i ka pōhaku Bologna (i kapa ʻia ʻo "pōhaku lā") hiki ke hoʻopuka i ka mālamalama. He lum liʻiliʻi kēia ʻano oka...Heluhelu hou aku -
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, ka 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 hana hou ...Heluhelu hou aku -
Ka hoʻohana ʻana o ka nano cerium oxide i ka polymer
Hoʻomaikaʻi ʻo Nano-ceria i ke kūpaʻa ʻelemakule ultraviolet o ka polymer. ʻO ka 4f uila uila o nano-CeO2 he mea maʻalahi loa ia i ka lawe ʻana i ka māmā, a ʻo ka band absorption ka hapa nui ma ka ʻāpana ultraviolet (200-400nm), ʻaʻohe ona hiʻohiʻona hiʻona i ka mālamalama ʻike a me ka transmittance maikaʻi. Ord...Heluhelu hou aku -
Hoʻohana i ka pauka scandium oxide Sc2O3
Ka hoʻohana ʻana i ka scandium oxide ʻO ke kumu kemika o ka scandium oxide ʻo Sc2O3. Nā waiwai: Paʻa keʻokeʻo. Me ke ʻano cubic o ka honua sesquioxide. ʻO ka mānoanoa 3.864. Ka helu hehee 2403 ℃ 20 ℃. ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i ka wai wela. Hoʻomākaukau ʻia e ka decomposition thermal o ka paʻakai scandium. Hiki ke ...Heluhelu hou aku