Codsiga iyo isku dhafka ZSM-5 shaandho molecular

I. Hordhac

Shaandho molecular ZSM-5 waa nooc ka mid ah walxaha microporous oo leh qaab dhismeed gaar ah, kaas oo si weyn loogu isticmaalay meelo badan sababtoo ah sifooyinka wanaagsan ee xayeysiinta, xasiloonida iyo dhaqdhaqaaqa kicinta. Warqadan, codsiga iyo isku dhafka shaandhada molecular ZSM-5 ayaa si faahfaahsan loo soo bandhigi doonaa.

Marka labaad, codsiga ZSM-5 shaandho molecular

1. Catalyst: Iyada oo ay ugu wacan tahay aashitada sare iyo qaab dhismeedka daldaloolada gaarka ah ee ZSM-5 shaandhada molecular, waxay noqotay kicin aad u fiican falcelinta kiimikaad badan, sida isomerization, alkylation, fuuqbax, iwm.
2. Adsorbent: ZSM-5 shaandho molecular waxay leedahay mugga daloolka weyn iyo waxqabadka xayeysiinta wanaagsan, waxaana si ballaaran loo isticmaalaa kala-soocidda gaaska, kala-soocidda dareeraha iyo qaadaha kicinta iyo beeraha kale.
3. Xabad qaade: waxa loo isticmaali karaa sida koriyaha kicinta si kor loogu qaado dhaqdhaqaaqa iyo xasiloonida kicinta.

Isku dhafka ZSM-5 shaandho molecular

Isku-dubaridka ZSM-5 shaandho molecular sida caadiga ah waxay qabataa habka template, kaas oo xakameynaya habka isku-dhafka iyadoo la xakameynayo heerkulka, cadaadiska, saamiga alaabta ceeriin iyo xaaladaha kale. Waxaa ka mid ah, alaabta ceeriin ee inta badan la isticmaalo waa sodium silicate iyo sodium aluminate.

1. Xakamaynta saamiga silica-aluminium: saamiga silica-aluminium waa mid ka mid ah xuduudaha muhiimka ah ee ZSM-5 shaandhada molecular, kaas oo lagu xakameyn karo iyada oo la hagaajinayo saamiga sodium silicate iyo sodium aluminate. Heerka sare ee silikoon iyo aluminium, ayaa u janjeera qaabka shaandhada molecular ee la sameeyay waa silikoon, iyo lidkeeda.
2. Heerkulka synthesis iyo cadaadiska: heerkulka isku-dhafka iyo cadaadiska ayaa sidoo kale ah arrimo muhiim ah oo saameeya samaynta shaandhada molecular ZSM-5. Guud ahaan, heerkulka sare iyo cadaadiska ayaa ku habboon samaynta shaandhada molecular ZSM-5.
3. Waqtiga crystallization iyo heerkulka crystallization: wakhtiga crystallization iyo heerkulka crystallization waa arrimo muhiim ah oo saameeya qaab-dhismeedka ZSM-5 shaandho molecular. Heerka samaynta iyo nadiifinta shaandhada molecular ZSM-5 ayaa la hagaajiyay iyada oo la kordhinayo heerkulka crystallization wakhtiga ku habboon crystallization.
4. Kaaliyeyaasha synthetic: Mararka qaarkood si loo hagaajiyo qiimaha pH ama kor loogu qaado habka crystallization, waa lagama maarmaan in lagu daro qaar ka mid ah caawiyayaasha synthetic, sida NaOH, NH4OH, iwm.

Iv. Gabagabo

Sida walxaha muhiimka ah ee microporous, ZSM-5 shaandhada molecular waxay leedahay rajo codsi oo ballaaran. Waa muhiim in la fahmo habka isku-dhafka ah ee codsigeeda ballaaran. Iyadoo la xakameynayo xaaladaha isku-dhafka ah, qaabka daloolada, acidity iyo sifooyinka catalytic ee shaandhada molecular ZSM-5 ayaa si wax ku ool ah loo xakameyn karaa, taas oo bixisa fursado badan oo loogu talagalay codsigeeda meelo kala duwan.