Cov lus qhia
| Kev tshwm sim | Colorless Pob tshab Kua |
| Kev coj dawb huv | 99% min |
| Thermal soj ntsuam cov ntaub ntawv | 550 j / g max |
| Khov taw tes | 16 degree |
| Ywg dej | 1% max |
Cov Ntawv Thov
12 {- crown {4 4}}}} 4 yog mactrocyclic polyether dav hauv chemistry, kev tshawb fawb kev tshawb fawb, thiab cov ntaub ntawv tshawb fawb. Nws cov kab ke loj tso cai rau cov nyom nrog cov kab mob me, ua rau nws muaj txiaj ntsig zoo hauv theem {} {{}} Xaiv cov khoom xaiv. Hauv kev siv tshuaj meteistry, nws ua haujlwm ua cov suab paj nruag los txhim kho cov solubility ntawm cov ntsev, polymerization, thiab lwm yam kev cuam tshuam, thiab lwm yam kev tawm tsam yuav tsum tau siv hlau rau hauv cov xov xwm tsis sib xws. Hauv kev ntsuas tshuaj chemistry, 12-crown-4 tau ua haujlwm hauv Ion-cov kev xaiv, thiab kev sib cais los txhim kho kev xaiv thiab rhiab rau Lithium nrhiav. Nws tseem siv rau hauv supramolular chemistry thiab host-qhua cov ntsiab lus rau kev tshawb fawb molecular, cation thauj, thiab kev tshawb fawb ntawm tus kheej, thiab kev tshawb fawb hluav taws xob, thiab cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob.
Cov txiaj ntsig
Cov txiaj ntsig ntawm 12 - crown {{4 4}}} 4 4}} 4 4}} 4 4} Nws plaub-oxygen crown tus qauv muab kev sib cav sib haum siab thiab kev xaiv ua ke-hloov matalysis thiab ion extraction txawm tias nyob rau hauv kev sib tw xov xwm. Qhov sib xyaw ua ke yog qhov tsis ruaj khov nyob rau hauv cov qauv kev kuaj mob, tso cai siv dua thiab txhim khu kev qha. Nws cov solubility hauv ntau yam orgal organic txhim kho kev ua haujlwm thiab nthuav tawm nws cov kev siv hluav taws xob ua haujlwm thiab cov txheej txheem txheeb xyuas. Ib qho ntxiv, 12-crown-4 lub peev xwm los ua tus tswv tsev-qhua txhawb kev kawm molecular lees paub molecular lees paub molecular kev tshawb nrhiav kev tshawb nrhiav, thiab kev txhim kho ntawm supramolular cov ntaub ntawv. Cov khoom no ua rau nws muaj cov cuab yeej siv tau rau cov kws kho mob thiab cov kws tshawb nrhiav ua haujlwm nrog cov tsiaj cationic, cov ntaub ntawv yeem xaiv, thiab cov ntaub ntawv qib siab siab.
Tag
Hauv cov ntsiab lus, 12 {- crown-}} hloov matalysis, analytical chemany, thiab cov kev tshawb nrhiav cov ntaub ntawv. Nws cov txiaj ntsig-suav nrog cov roj ntsha xaiv, tshuaj lom neeg ruaj khov, thiab kev tshawb nrhiav ion thiab cov kev tshawb fawb txog qib siab. Los ntawm kev ua kom yooj yim cation khi, thauj, thiab cov tswv khw qhua, txhawb kev tsim kho tshiab hauv cov ntaub ntawv thev naus laus zis, tshuaj ntsuam cov txuj ci, thiab cov ntaub ntawv hais txog kev ntsuas.
Cim npe nrov: 12-crown-4 丨 CAST 294-9, Tuam Tshoj 12-crain-4
