Tasirin rabon Si-Al akan sieve kwayoyin ZSM

Si / Al rabo (Si / Al rabo) wani muhimmin dukiya na ZSM simintin ƙwayar cuta, wanda ke nuna alaƙar abun ciki na Si da Al a cikin simintin kwayoyin. Wannan rabo yana da tasiri mai mahimmanci akan aiki da zaɓi na sieve kwayoyin ZSM.
Na farko, rabon Si / Al zai iya rinjayar acidity na sieves kwayoyin ZSM. Gabaɗaya, mafi girma da Si-Al rabo, da karfi da acidity na kwayoyin sieve. Wannan saboda aluminum na iya samar da ƙarin cibiyar acidic a cikin simintin ƙwayoyin cuta, yayin da silicon galibi ke ƙayyadaddun tsari da sifar sieve kwayoyin.
Sabili da haka, ana iya sarrafa acidity da aikin catalytic na sieve kwayoyin ta hanyar daidaita ma'aunin Si-Al. Abu na biyu, rabon Si / Al kuma zai iya rinjayar kwanciyar hankali da juriya na zafi na simintin kwayoyin ZSM.
Siffofin kwayoyin halitta da aka haɗa a mafi girma Si/Al rabo sau da yawa suna da mafi kyawun thermal da kwanciyar hankali na hydrothermal.
Wannan shi ne saboda silicon a cikin siliki na kwayoyin zai iya samar da ƙarin kwanciyar hankali, juriya ga halayen kamar pyrolysis da acid hydrolysis. Bugu da ƙari, rabon Si / Al kuma zai iya rinjayar girman pore da siffar sifa na kwayoyin ZSM.
Gabaɗaya, mafi girman rabon Si-Al, ƙarami girman pore na sieve kwayoyin, kuma siffar yana kusa da da'irar. Wannan shi ne saboda aluminum na iya samar da ƙarin abubuwan haɗin giciye a cikin simintin kwayoyin halitta, yana sa tsarin crystal ya fi dacewa. A taƙaice, tasirin Si-Al a kan sieve kwayoyin halitta na ZSM yana da yawa.
Ta hanyar daidaita Si-Al rabo, kwayoyin sieves tare da takamaiman pore size da siffar, mai kyau acidity da kwanciyar hankali za a iya hada, don haka kamar yadda mafi kyau saduwa da bukatun daban-daban catalytic halayen.