UBUSHINWA

  • Icyuma cya molekulari

Icyuma cya molekulari

  • Ibisobanuro
  • Molekile yibintu bitandukanye itandukanijwe nubunini nubunini bwa adsorption, bityo ishusho yitwa "icyuma cya molekile".
  • Amashanyarazi ya molekulari (azwi kandi nka zeolite ya syntetique) ni kirisiti ya silikatike.Nuburyo bwibanze bwa skeleton igizwe na silicon aluminate, hamwe nibyuma (nka Na +, K +, Ca2 +, nibindi) kugirango uhuze amafaranga arenze urugero muri kristu.Ubwoko bwa molekile ya elegitoronike igabanijwe cyane muburyo bwa A, ubwoko bwa X na Y ukurikije imiterere ya kristu.
 

Imiti yimiti ya selile ya zeolite

Mx / n [(AlO.2) x (SiO.2) y] KUKI.2O.

Mx / n.

Cion ion, kugumya kristu idafite amashanyarazi

(AlO2) x (SiO2) y

Igikanka cya kirisiti ya zeolite, hamwe nuburyo butandukanye bwimyobo n'imiyoboro

H2O

kumubiri wumuyaga wamazi

Ibiranga

Byinshi adsorption na desorption birashobora gukorwa

 

Andika icyuma cya AMolecular

 1

Ikintu cyingenzi cyubwoko bwa A molekulari ni silicon aluminate.Umwobo nyamukuru wa kirisiti ni octaring structure.Ubusembure bwingenzi bwa kristu ya aperture ni 4Å (1Å = 10-10m), izwi nkubwoko bwa 4A (bizwi kandi nubwoko A) icyuma cya molekile;Hindura Ca2 + kuri Na + mumashanyarazi ya 4A, ukore aperture ya 5A, aribwo bwoko bwa 5A (bita calcium A) icyuma cya molekile; K + kumashanyarazi ya 4A, bikora aperture ya 3A, aribyo 3A (aka potasiyumu A) icyuma cya molekile.

Andika X ya molekile

2

Ikintu cyingenzi kigize icyuma cya X molekuline ni silicon aluminate, umwobo nyamukuru wa kristu ni ibintu cumi na bibiri byubaka impeta. ; Ca2 + yahinduye Na + mu cyuma cya 13X ya molekile, ikora kristu ya molekile ya kirisiti ifite aperture ya 8-9 A, yitwa 10X (izwi kandi nka calcium X) icyuma cya molekile.

   
  • Gusaba
  • Kwiyongera kw'ibikoresho biva muri adsorption physique (vander Waals Force), hamwe na polarite ikomeye hamwe nimirima ya Coulomb imbere yumwobo wacyo wa kirisiti, byerekana ubushobozi bukomeye bwo kwinjiza molekile ya polarike (nkamazi) na molekile zidahagije.
  • Ikwirakwizwa rya aperture ya elegitoronike irasa cyane, kandi ibintu gusa bifite diameter ya molekile ntoya kurenza umwobo wa diameter bishobora kwinjira mu mwobo wa kirisiti imbere ya sikeli.

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