Iyindi ni uburyo bwa gazi - uburyo bwo gushiramwo umwotsi (CAV), buzwi kandi nk’uburyo bw’ivyuma, uburyo bwumye canke uburyo bwo guturika. Ibikoresho vyayo vya mbere ni tetrachloride, umwuka (canke umuyaga) n’iyidrojeni, ivyo bikaba bikora ku bushuhe bwinshi.
The reaction equation is: SiCl4+2H2+O2 - >SiO2+4HCl. Air na hydrogène bishirwa mu nzira y’ugutera umukazo, ugutandukanya, gukonjesha no gukuraho amazi, kwumisha gel gel, gukuraho inkungugu no kuyungurura imbere y’uko birungikwa mu gitereko c’amazi. Inyuma y’aho ibikoresho vya silikoni tetrachloride birungitswe ku nkingi y’ugukuraho amazi kugira ngo bishobore gukura, birashuha kandi bikahinduka umwuka mu gikoresho co guhindura umwuka, hanyuma bikarungikwa ku mfuruka y’amazi y’ivyuma n’umuyaga wumye n’icungururwa nk’umutwara. Silicon tetrachlorde ihindurwa umwuka ku bushuhe bwinshi (ubushuhe bw'umuriro 1000-1800℃) hanyuma igaca mu gazi-phase hydrolysis n'ihydrogène n'umwuka (canke umuyaga) ku rugero rwa degre 1800 . Muri iki gihe, utugingo ngengabuzima twa silica-pram-phase tuvamwo ni neza cane kandi tukagira aerosols ifise imyuka, ivyo bikaba bigoye gufata.
Ku bw’ivyo, barabanza gukorana mu bihimba bininibinini mu gikoresho co gukoranya, hanyuma bagakoranirizwa hamwe n’igikoresho co gutandukana n’inkubi y’umuyaga, bagaca barungikwa mw’itanure ry’agaciro. Gazi- Ilica y’ivyuma vy’agaciro vy’agaciro vy’azote- irimwo umuyaga gushika agaciro ka PH ari 4 gushika kuri 6, ari co kintu carangiye