Kopo le synthesis ea ZSM-5 molecular sieve

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 ho thusa.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 limolek'hule tsa ZSM-5 hangata e sebelisa mokhoa oa template, o laolang ts'ebetso ea ho kopanya 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: silika-aluminium karo-karolelano 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 loketseng ea kristallise.
4. Lisebelisoa tsa maiketsetso: Ka linako tse ling e le hore u fetole boleng ba pH kapa u khothalletse ts'ebetso ea crystallization, hoa hlokahala ho eketsa 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.