ʻO Trimethylaluminum (TMAI)
ʻO Trimethylalumane (TMAI)
| Nā huaʻōlelo like | Trimethylaluminum, Aluminium Trimethyl,Aluminium Trimethanide, TMA, TMAL, AlMe3, Ziegler-Natta Catalyst, Trimethyl-, Trimethylalane. |
| Helu Cas | 75-24-1 |
| ʻO ke ʻano kemika | C6H18Al2 |
| Ka nuipa molar | 144.17 g/mol, 72.09 g/mol (C3H9Al) |
| helehelena | Wai kala ʻole |
| Ka nui o ka paʻa | 0.752 g/cm3 |
| Kiko heheʻe | 15℃ (59 ℉; 288K) |
| Kikowaena paila | 125--130 ℃ (257--266 ℉, 398--403K) |
| Ka hoʻoheheʻe ʻia ʻana i ka wai | Hoʻihoʻi |
| Kaomi mahu | 1.2 kPa (20 ℃), 9.24 kPa (60 ℃) |
| Mānoanoa | 1.12 cP (20 ℃), 0.9 cP (30 ℃) |
Trimethylaluminum (TMAl), ma ke ʻano he kumu metala-organic (MO), ua hoʻohana nui ʻia i ka ʻoihana semiconductor a lawelawe ma ke ʻano he mea nui no ka hoʻopaʻa ʻana o ka papa atomika (ALD), ka hoʻopaʻa ʻana o ka mahu kemika (CVD), a me ka hoʻopaʻa ʻana o ka mahu kemika metala-organic (MOCVD). Hoʻohana ʻia ia e hoʻomākaukau i nā kiʻiʻoniʻoni i loaʻa ka alumini kiʻekiʻe, e like me ka alumini oxide a me ka alumini nitride. Eia kekahi, loaʻa iā TMAl ka hoʻohana nui ʻana ma ke ʻano he mea hoʻoulu a me kāna mea kōkua i ka synthesis organik a me nā hopena polymerization.
Hana ʻo Trimethylaluminum (TMAI) ma ke ʻano he mea hoʻomākaukau no ka waiho ʻana o ka alumini oxide a hana ma ke ʻano he mea hoʻouluulu Ziegler-Natta. ʻO ia hoʻi ka mea hoʻomākaukau alumini i hoʻohana nui ʻia i ka hana ʻana o ka metal-organic vapor-phase epitaxy (MOVPE). Eia kekahi, lawelawe ʻo TMAI ma ke ʻano he mea methylation a hoʻokuʻu pinepine ʻia mai nā rockets kani ma ke ʻano he tracer no ke aʻo ʻana i nā ʻano makani lewa kiʻekiʻe.
ʻO ka kikoʻī ʻoihana o 99.9999% Trimethylaluminum - Silicon haʻahaʻa a me ka ʻike oxygen haʻahaʻa (6N TAMI-Low Si a me Low Ox)
| ʻElemene | Hopena | Nā kikoʻī | ʻElemene | Hopena | Nā kikoʻī | ʻElemene | Hopena | Nā kikoʻī |
| Ag | ND | <0.03 | Cr | ND | <0.02 | S | ND | <0.05 |
| As | ND | <0.03 | Cu | ND | <0.02 | Sb | ND | <0.05 |
| Au | ND | <0.02 | Fe | ND | <0.04 | Si | ND | ≤0.003 |
| B | ND | <0.03 | Ge | ND | <0.05 | Sn | ND | <0.05 |
| Ba | ND | <0.02 | Hg | ND | <0.03 | Sr | ND | <0.03 |
| Be | ND | <0.02 | La | ND | <0.02 | Ti | ND | <0.05 |
| Bi | ND | <0.03 | Mg | ND | <0.02 | V | ND | <0.03 |
| Ca | ND | <0.03 | Mn | ND | <0.03 | Zn | ND | <0.05 |
| Cd | ND | <0.02 | Ni | ND | <0.03 | |||
| Co | ND | <0.02 | Pb | ND | <0.03 |
Hoʻomaopopo:
Ma luna o nā mea āpau, ʻo ka waiwai PPM ma ke kaumaha ma ka metala, a ʻo ND = ʻaʻole i ʻike ʻia
ʻAno Hana Loiloi: ICP-OES/ICP-MS
Nā hopena FT-NMR (ʻO ka LOD no ka haumia organik a me ka oxygenated FT-NMR he 0.1ppm):
Palapala hōʻoia oxygen <0.2 ppm (Ana ʻia ma FT-NMR)
1. ʻAʻohe mea haumia organik i ʻike ʻia
2. ʻAʻole i ʻike ʻia nā haumia oxygenated
He aha ka mea e hoʻohana ʻia ai ʻo Trimethylaluminum (TMAI)?
ʻO Trimethylaluminum (TMA)- Nā noi a me nā hoʻohana
ʻO Trimethylaluminum (TMA) kahi hui organoaluminum maʻemaʻe loa e lawelawe ana ma ke ʻano he mea hoʻomākaukau koʻikoʻi ma kekahi o nā ʻoihana hana holomua loa. ʻO kona reactivity kūikawā a me ke kaomi mahu e lilo ia i mea koho no ka waiho ʻana i nā kiʻiʻoniʻoni alumini kikoʻī i loko o nā ʻenehana uila a me ka ikehu, a me kahi ʻāpana kumu i ka hana polyolefin.
Hana ʻia kā mākou TMA i nā kūlana maʻemaʻe paʻa loa, me ka kaohi koʻikoʻi ma luna o nā mea haumia elemental, oxygenated, a me nā mea kūlohelohe e hōʻoia i ka hana kūpono loa i kāu mau noi koi nui loa.
Nā Hana a me nā ʻOihana Mua:
1. Hana ʻana i nā mea hana semiconductor a me nā microelectronics
I loko o ka ʻoihana semiconductor, he mea nui ʻo TMA no ka waiho ʻana i nā ʻiliʻili lahilahi me ka pololei atomic-scale.
* Nā Dielectrics K-kiʻekiʻe: Hoʻohana ʻia ma ka Atomic Layer Deposition (ALD) a me ka Chemical Vapor Deposition (CVD) e ulu i nā ʻili lahilahi like ʻole o ka alumini oxide (Al₂O₃), e lawelawe ana ma ke ʻano he mau dielectrics puka k-kiʻekiʻe i nā transistors holomua a me nā mea hoʻomanaʻo.
* Nā Semiconductors Hui: ʻO ke kumu alumini makemake nui ʻia ma Metalorganic Vapor Phase Epitaxy (MOVPE) no ka hoʻoulu ʻana i nā semiconductors hui III-V hana kiʻekiʻe. He mea nui kēia mau mea no:
* Nā Uila Alapine Kiʻekiʻe: (e laʻa, AlGaAs, AlInGaP)
* Optoelectronics: (e laʻa, AlGaN, AlInGaN)
2. Ikehu Maʻemaʻe a me nā Photovoltaics
Hiki iā TMA ke hoʻonui i ka pono a me ke kūpaʻa i nā ʻenehana ikehu lā.
* Nā Papa Passivation ʻIli: Hoʻopaʻa ʻia ma o ALD a i ʻole Plasma-Enhanced CVD (PECVD), hāʻawi nā kiʻiʻoniʻoni alumini oxide (Al₂O₃) mai TMA i ka passivation ʻili maikaʻi loa no nā cell solar silicon crystalline. Hoʻemi nui kēia i ka hui hou ʻana o ka mea lawe ukana, e alakaʻi ana i nā loaʻa koʻikoʻi i ka pono o ka hoʻololi ʻana o nā cell a me ke kūpaʻa lōʻihi.
3. Nā Kukui & Hōʻikeʻike Holomua (LED)
ʻO ka hana ʻana o nā LED ʻōlinolino kiʻekiʻe a me ka mālama ikehu e hilinaʻi nei i ka TMA maʻemaʻe kiʻekiʻe.
* LED Epitaxy: Hana ma ke ʻano he mea hoʻomākaukau alumini i loko o nā reactors MOVPE e hoʻoulu i nā papa hana (e laʻa, AlGaN) i nā LED polū, ʻōmaʻomaʻo, a me ultraviolet.
* Ka Passivation o ka Hāmeʻa: Hoʻohana ʻia e waiho i nā ʻiliʻili alumini oxide pale a i ʻole nā kiʻiʻoniʻoni alumini nitride e hoʻonui ai i ka pono o ka unuhi optical a hoʻolōʻihi i ke ola hana o nā hāmeʻa LED.
4. ʻOihana Catalysis & Polymer Production
ʻO ke koʻikoʻi o ka TMA ma ka ʻoihana e pili ana i kāna kuleana i ka catalysis.
* Polyolefin Catalysis: ʻO ia ka mea hoʻomaka mua no ka synthesis o Methylaluminoxane (MAO), kahi mea hoʻouluulu koʻikoʻi i nā ʻōnaehana hoʻouluulu Ziegler-Natta a me metallocene. Hana kēia mau ʻōnaehana i ka hapa nui o nā polyethylene a me polypropylene plastics o ka honua.
Nā ʻano koʻikoʻi a me nā pono:
* Maʻemaʻe Loa-Kiʻekiʻe: Hoʻomalu pono ʻia e hōʻemi i nā mea haumia e hoʻohaʻahaʻa i ka hana uila a me ka hana catalytic.
* Precursor Kiʻekiʻe: Hāʻawi i ka volatility maikaʻi loa, ke kūpaʻa wela, a me nā ʻano decomposition maʻemaʻe no ka waiho ʻana o ka ʻiliʻili kiʻekiʻe.
* Kūlana ʻOihana: ʻO ke kumu alumini i hoʻokumu ʻia a hilinaʻi ʻia no nā kaʻina hana MOVPE, ALD, a me CVD ma nā wahi R&D a me nā hana hana honua.
* Kumu no nā Palakiko: He mea maka koʻikoʻi e hiki ai ke hana i nā polymers polyolefin koʻikoʻi a me nā mea maʻalahi.
ʻŌlelo Hoʻolaha: He mea pyrophoric a maʻalahi hoʻi ka Trimethylaluminum i ka makū e pono ai ka lawelawe kūikawā a me nā kaʻina hana palekana. No nā kumu wehewehe ka ʻike i hāʻawi ʻia. He kuleana ko ka mea hoʻohana e lawelawe i kēia mea e like me nā alakaʻi palekana āpau a e hoʻoholo i kona kūpono no kahi noi kikoʻī.
