Ukuvikelwa kwe-oxidation yegwebu lethusi ezithandweni zokucwilisa

Isizathu sokuthi kunganiigwebu lethusiayifaki oxidize
Igwebu le-Copper liyi-porous material eyenziwe ngengxube yethusi eyinsimbi kanye ne-agent eyenza amagwebu engaphezulu, ebhakwa futhi yandiswe emazingeni okushisa aphezulu. Esithandweni somlilo, i-foam yethusi kulula ukuyikhipha emoyeni ngoba ama-molecule e-oksijini angangena ngaphakathi kwegwebu ngokusebenzisa ama-foam pores futhi aphendule ngethusi ukuze akhiqize i-copper oxide. Kodwa-ke, kunenani elikhulu lama-gas pores ngaphakathi kwe-foam yethusi, futhi lezi zimbotshana zegesi zingakhipha ama-molecule e-oksijini avela ngaphakathi kwegwebu, ngaleyo ndlela eqaphela umphumela wokungewona i-oxidation.
Izinyathelo Zokuzivikela
Nakuba kunenqwaba yama-pores egesi ngaphakathiigwebu lethusi, uma umkhathi ongaphakathi kwesithando somlilo ungafanelekile usazoholela ku-oxidation. Ngakho-ke, esithandweni somlilo, ukuze kuvikelwe igwebu lethusi ku-oxidation, izinyathelo ezilandelayo kufanele zithathwe:
1. Ukulawulwa komkhathi wokugeleza: Lawula umoya we-redox esithandweni somlilo ngokulungisa amandla e-redox ashisayo. Phakathi kwabo, umkhathi we-oxidizing uzosheshisa i-oxidation ye-foam yethusi, ngakho-ke kuyadingeka ukunciphisa okuqukethwe komoya-mpilo futhi ukwandise okuqukethwe kokunciphisa igesi.
2. Surface enamathela ejenti zokuzivikela: enamathela ungqimba ejenti zokuzivikela phezu kobusoigwebu lethusiingamelana ngokuphumelelayo ne-oxidation. Ama-ejenti okuvikela asetshenziswa kakhulu ngamafutha e-silicon, i-sintered carbon powder, i-aluminium oxide nokunye. Phakathi kwazo, i-alumina ingakha ungqimba lwefilimu ye-alumina ezinzile ukuvimbela ukusabela okwengeziwe komoyampilo.
Isizathu sokuthi kungani i-foam yethusi ingafaki i-oxidize esithandweni somlilo ukuthi kunenani elikhulu lama-pores egesi ngaphakathi kwalo, elingakhipha ama-molecule e-oksijini ngaphandle kwe-foam yangaphakathi. Ukuze uvikele i-foam yethusi, kuyadingeka ukulawula umoya wokugeleza esithandweni somlilo futhi ugqoke ubuso baso ngama-agent okuzivikela nezinye izinyathelo.