• Molecular Sieve

Molecular Sieve

  • Tsanangudzo
  • Mamorekuru ezvinhu zvakasiyana anosiyaniswa nekutanga uye saizi yeadsorption, saka mufananidzo unonzi "molecular sieve".
  • Molecular sieve (inozivikanwawo sekuti synthetic zeolite) is silicate microporous crystal.Iyo yakakosha skeleton chimiro chinoumbwa nesilicon aluminate, ine simbi cations (senge Na +, K +, Ca2 +, etc.) kuenzanisa yakawandisa yakaipa kuchaji mukristaro.Rudzi rwema molecular sieve inonyanya kukamurwa kuita A mhando, X mhando uye Y mhando zvinoenderana nekristaro yayo chimiro.
 

Kemikari formula yezeolite masero

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

Mx/n.

Cation ion, kuchengetedza kristaro isina kwayakarerekera

(AlO2) x (SiO2) y

Iyo skeleton yezeolite makristasi, ane akasiyana maumbirwo emakomba uye chiteshi

H2O

muviri adsorbed mvura mhute

Features

Multiple adsorption uye desorption inogona kuitwa

 

Type Amolecular sieve

 1

Chinhu chikuru cherudzi A molecular sieve is silicon aluminate.The main crystal hole is octaring structure.The aperture of the main crystal aperture is 4Å(1Å=10-10m), inozivikanwawo semhando 4A (inozivikanwawo semhando A) molecular sieve;Shandura iyo Ca2 + yeNa + mu4A molecular seve, ichiita nzvimbo ye5A, iyo inonzi 5A type (aka calcium A) molecular sieve;K+ ye 4A molecular sieve, inogadzira aperture ye3A, iyo 3A (aka potassium A) molecular sieve.

Nyora X molecular sieve

2

Chinhu chikuru che X molecular sieve is silicon aluminate, hole huru yecrystal ine gumi nembiri element ring structure.Different crystal structure inoumba molecular sieve crystal ine aperture ye9-10 A, inonzi 13X (inozivikanwawo se sodium X type) molecular sieve. ;Ca2 + yakatsinhaniswa neNa + mu 13X molecular sieve, ichiita molecular sieve crystal ine aperture ye8-9 A, inonzi 10X (inozivikanwawo se calcium X) molecular sieve.

   
  • Application
  • Iyo adsorption yezvinhu inobva kune yemuviri adsorption (vander Waals Force), ine yakasimba polarity uye Coulomb minda mukati mekristaro gomba, ichiratidza yakasimba adsorption kugona kwemapolar molecules (semvura) uye unsaturated mamorekuru.
  • Iyo aperture kugoverwa kweiyo molecular sieve yakanyatso yunifomu, uye chete zvinhu zvine dhayamita dhayamita idiki pane gomba dhayamita zvinogona kupinda mugomba rekristaro mukati mesefa yemamorekuru.

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