izindaba

Ingxenye eyinhloko ye-diatomite njengesithwali yi-SiO2. Isibonelo, ingxenye esebenzayo ye-industrial vanadium catalyst yi-V2O5, i-cocatalyst i-alkali metal sulfate, futhi ophethe i-diatomite ecwengisisiwe. Imiphumela ibonisa ukuthi i-SiO2 inomphumela wokuzinzisa ezingxenyeni ezisebenzayo, futhi iyanda ngokunyuka kokuqukethwe kwe-K2O noma kwe-Na2O. Umsebenzi we-catalyst uhlobene nokuhlakazeka kokusekela kanye nesakhiwo se-pore. Ngemva kokwelapha i-diatomite nge-asidi, okuqukethwe kokungcola kwe-oxide kuncipha, okuqukethwe kwe-SiO2 kuyanda, indawo ethile yendawo kanye nevolumu ye-pore nayo iyanda, ngakho umphumela wokuthwala we-diatomite ocwengiwe ungcono kune-diatomite yemvelo.

I-Diatomite ivamise ukwakhiwa kusuka ezinsalela ze-silicates ngemva kokufa kolwelwe olunengqamuzana elilodwa, olubizwa ngokuthi ama-diatoms, futhi empeleni luyi-hydrated amorphous SiO2. Ama-Diatom angaphila emanzini amasha nasawoti. Kunezinhlobo eziningi zama-diatom, angahlukaniswa ngokujwayelekile abe ama-diatom “engqondo ephakathi” kanye nama-diatom “e-feather striata”. Kuhlelo ngalunye, kunezinhlobo eziningi “eziyinkimbinkimbi” eziyinkimbinkimbi.

Ingxenye eyinhloko ye-diatomite yemvelo yi-SiO2. I-diatomite yekhwalithi ephezulu imhlophe, futhi okuqukethwe kwe-SiO2 kuvame ukudlula ama-70%. I-diatom eyodwa ayinambala futhi isobala, futhi umbala we-diatomite uncike kumaminerali obumba nezinto eziphilayo, njll., Futhi ukwakheka kwama-diatoms avela emithonjeni yamaminerali ehlukene kuhlukile.

I-Diatomite iyidiphozithi ye-diatomite eyinsalela eyakhiwe ngemva kwesikhathi sokunqwabelana esiyiminyaka engaba ngu-10,000 kuya kwezingu-20,000 ngemva kokufa kwezitshalo ezineseli elilodwa okuthiwa ama-diatoms. Ama-diatom aphakathi kwe-protozoa yokuqala ukuvela eMhlabeni, ehlala emanzini olwandle nasemachibini. Yile diatom, enikeza umoya-mpilo emhlabeni nge-photosynthesis, ebangela ukuzalwa kwabantu nezilwane nezitshalo.

Lolu hlobo lwe-diatomite lwakhiwa ngokufakwa kwezinsalela ze-diatomite yesitshalo sasemanzini eneseli elilodwa. Impahla eyingqayizivele ye-diatomite ukuthi ingakwazi ukumunca i-silicon yamahhala emanzini ukuze yakhe uhlaka lwamathambo ayo. Lapho impilo yayo isiphelile, ingafaka futhi yakhe idiphozithi ye-diatomite ngaphansi kwezimo ezithile zokwakheka komhlaba. Inezici ezithile eziyingqayizivele, ezifana ne-porosity, ukugxila okuphansi, indawo enkulu yendawo ethile, ukungahambisani nokulingana kanye nokuzinza kwamakhemikhali, kuze kufike ekuchotshozweni kwenhlabathi yasekuqaleni, ukuhlunga, ukubala, njengokuhlukaniswa kokugeleza komoya, kunqubo yokucubungula eyinkimbinkimbi ukuze ushintshe usayizi wezinhlayiyana zayo zokusabalalisa kanye nezakhiwo ezingaphezulu, ifanele ukumbozwa kwezithasiselo zikapende, nezinye izidingo zezimboni.