I. Selelekela
ZSM-5 molecular sieve ke mofuta oa lintho tse nyenyane tse nang le sebopeho se ikhethang, tse 'nileng tsa sebelisoa haholo libakeng tse ngata ka lebaka la thepa ea eona e ntle ea ho bapatsa, botsitso le ts'ebetso ea matla. Leqepheng lena, ts'ebeliso le tlhophiso ea sieve ea molek'hule ea ZSM-5 e tla hlahisoa ka botlalo.
Ea bobeli, ts'ebeliso ea sieve ea molek'hule ea ZSM-5
1. Catalyst: Ka lebaka la acidity e phahameng le sebopeho se ikhethang sa pore ea ZSM-5 molecular sieve, e fetohile mohloli o babatsehang oa lik'hemik'hale tse ngata, tse kang isomerization, alkylation, dehydration, joalo-joalo.
2. Adsorbent: ZSM-5 molecular sieve e na le molumo o moholo oa pore le ts'ebetso e ntle ea adsorption, 'me e sebelisoa haholo ho arola khase, karohano ea metsi le catalyst carrier le masimo a mang.
3. Catalyst carrier: e ka sebelisoa e le sesebelisoa sa catalyst ho ntlafatsa mosebetsi le botsitso ba mokelikeli.
Synthesis ea ZSM-5 molecular sieve
Kakaretso ea sieve ea molek'hule ea ZSM-5 hangata e sebelisa mokhoa oa template, o laolang ts'ebetso ea motsoako ka ho laola mocheso, khatello, tekanyo ea thepa e tala le maemo a mang. Har'a tsona, lisebelisoa tse tala tse sebelisoang haholo ke sodium silicate le sodium aluminate.
1. Taolo ea silika-aluminium karo-karolelano: karo-karolelano ea silica-aluminium ke e 'ngoe ea likarolo tsa bohlokoa tsa ZSM-5 molecular sieve, e ka laoloang ka ho fetola karo-karolelano ea sodium silicate le sodium aluminate. Ha karo-karolelano ea silicon ho aluminium e phahame, moralo oa sieve ea limolek'hule o sekametseng ho silicon, 'me ka tsela e fapaneng.
2. Mocheso oa motsoako le khatello: mocheso oa motsoako le khatello le tsona ke lintlha tsa bohlokoa tse amang ho thehoa ha ZSM-5 molecular sieve. Ka kakaretso, mocheso o phahameng le likhatello li thusa ho thehoa ha li-sieve tsa molek'hule tsa ZSM-5.
3. Nako ea Crystallization le mocheso oa crystallization: nako ea crystallization le mocheso oa crystallization ke lintlha tsa bohlokoa tse amang sebopeho sa ZSM-5 molecular sieve. Sekhahla sa sebopeho le bohloeki ba sieve ea molek'hule ea ZSM-5 li ile tsa ntlafatsoa ka ho eketsa mocheso oa crystallization ka nako e nepahetseng ea kristallise.
4. Lisebelisoa tsa maiketsetso: Ka linako tse ling e le hore u fetole boleng ba pH kapa u khothalletse mokhoa oa crystallization, ho hlokahala hore u kenye lisebelisoa tse ling tsa maiketsetso, tse kang NaOH, NH4OH, joalo-joalo.
Iv. Qetello
Joalo ka thepa ea bohlokoa ea microporous, sieve ea molek'hule ea ZSM-5 e na le tebello e pharalletseng ea ts'ebeliso. Ho bohlokoa ho utloisisa mokhoa oa ho kopanya bakeng sa ts'ebeliso ea eona e pharaletseng. Ka ho laola maemo a motsoako, sebopeho sa pore, acidity le thepa ea catalytic ea ZSM-5 molecular sieve e ka laoloa ka katleho, e fanang ka menyetla e mengata ea ts'ebeliso ea eona likarolong tse fapaneng.
Nako ea poso: Nov-28-2023
