Chiyero cheSi/Al (Si/Al ratio) chinhu chakakosha cheZSM molecular sefa, icho chinoratidza huwandu hweSi neAl mu molecular sefa. Chiyero ichi chine simba guru pakushanda uye kusarudza kweZSM molecular sefa.
Chekutanga, chiyero cheSi/Al chinogona kukanganisa acidity yemasefa eZSM. Kazhinji, chiyero cheSi-Al chakakwira, acidity yemasefa emolecular inosimba. Izvi zvinodaro nekuti aruminiyamu inogona kupa imwe nzvimbo ine acidity musefa yemolecular, nepo silicon ichinyanya kusarudza chimiro uye chimiro chesefa yemolecular.
Saka, acidity uye catalytic activity ye molecular sefa zvinogona kudzorwa nekugadzirisa Si-Al ratio. Chechipiri, Si/Al ratio inogonawo kukanganisa kugadzikana uye kuramba kupisa kwe ZSM molecular sefa.
Masefa emamorekuru akagadzirwa neSi/Al ratios yakakwira anowanzova nekugadzikana kuri nani pakupisa uye pamvura.
Izvi zvinodaro nekuti silicon iri mu molecular see inogona kupa kugadzikana kwakawedzerwa, kuramba maitiro akadai se pyrolysis uye acid hydrolysis. Pamusoro pezvo, chiyero cheSi/Al chinogonawo kukanganisa saizi yepore uye chimiro cheZSM molecular seeves.
Kazhinji, kana chiyero cheSi-Al chakakwira, saizi yepore yesefa yemamorekuru inoderera, uye chimiro chacho chinenge chiri pedyo nedenderedzwa. Izvi zvinodaro nekuti aruminiyamu inogona kupa mamwe mapoinzi ekubatanidza musefa yemamorekuru, zvichiita kuti chimiro chekristaro chive chidiki. Mukupfupisa, mhedzisiro yechiyero cheSi-Al pasefa yemamorekuru yeZSM ine mativi akawanda.
Nekugadzirisa chiyero cheSi-Al, ma sefa emamorekuru ane saizi chaiyo uye chimiro, acidity yakanaka uye kugadzikana zvinogona kugadzirwa, kuitira kuti zvigutse zviri nani zvinodiwa nemaitiro akasiyana-siyana e catalytic.
Nguva yekutumira: Zvita-11-2023
