Enqubweni yokuhlanganiswa kwe-sieve yamangqamuzana, i-ejenti yesifanekiso idlala indima ebalulekile. I-ejenti yesifanekiso i-molecule ye-organic engaqondisa ukukhula kwekristalu yesisefo samangqamuzana ngokusebenzisa ukuxhumana kwe-intermolecular futhi inqume isakhiwo sayo sokugcina sekristalu.
Okokuqala, i-ejenti yesifanekiso ingathinta inqubo yokuhlanganiswa kwe-sieve yamangqamuzana. Enqubweni yokuhlanganisa yesisefo samangqamuzana, i-ejenti yesifanekiso ingasetshenziswa “njengomhlahlandlela” ukusiza ukuhlanganisa isisefo samangqamuzana ngosayizi nokuma kwembotshana ethile. Lokhu kungenxa yokuthi i-ejenti yesifanekiso iyakwazi ukubona futhi ixhumanise nezinhlobo ezithile ze-silicate ezingaphili, ngaleyo ndlela ilawule indlela yazo yokukhula nezinga. Okwesibili, i-ejenti yesifanekiso ingaphinda ithinte usayizi we-pore kanye nokuma kwesisefo samangqamuzana.
Izisefo zamangqamuzana ezinobukhulu obuhlukahlukene nezimbotshana zokwakheka zingahlanganiswa nama-ejenti ezifanekiso ahlukene, ngenxa yokuthi usayizi wamangqamuzana kanye nokuma kwe-ejenti yesifanekiso kunquma usayizi wembotshana nokuma kwesisefo sokugcina samangqamuzana.
Isibonelo, isifanekiso se-decyl singasetshenziswa ukuze kuhlanganiswe isisefo se-molecular ZSM-5 ngesakhiwo se-cyclopore esinamalungu ayishumi, kuyilapho ithempulethi ye-dodecyl ingasetshenziswa ukuze kuhlanganiswe isisefo se-molecular ZSM-12 ngesakhiwo se-cyclopore esinamalungu ayishumi nambili.
Ngaphezu kwalokho, i-ejenti yesifanekiso nayo ingathinta i-asidi nokuzinza kwe-sieve yamangqamuzana. Izinhlobo ezihlukene zama-ejenti ezifanekiso zingadlulisela i-asidi ehlukene kusihlungi samangqamuzana, ngenxa yokuthi i-ejenti yesifanekiso ingasebenzisana nesikhungo esine-acidic sesisefo samangqamuzana ngamaqembu aso asebenzayo.
Ngesikhathi esifanayo, ama-template ahlukene angaphinde athinte ukuzinza kokushisa kanye nokuzinza kwe-hydrothermal ye-sieve yamangqamuzana. Isibonelo, ukusetshenziswa kwesifanekiso se-amide kungathuthukisa kakhulu ukuzinza kokushisa kwe-ZSM-5 sieves yamangqamuzana.
Ekuphetheni, i-ejenti yesifanekiso idlala indima ebalulekile ekuhlanganisweni kwe-ZSM ye-molecular sieve.
Ngokukhetha i-ejenti yesifanekiso efanelekile, izisefo zamangqamuzana ezinosayizi nokuma kwembotshana ethile, i-asidi enhle nokuzinza kungahlanganiswa, ukuze kuhlangatshezwane kangcono nezidingo zokusabela okuhlukahlukene kwe-catalytic.
Isikhathi sokuthumela: Dec-11-2023
