Silica, one of most porous materials having a unique silanol group, that can be replaced with other functional groups for more specific purposes. One of highlights is replacement of silanol function groups with amine groups. Amines are highly reactive to the carbon dioxide gas, so the silica amine hybrid has potential to absorb the carbon dioxide gas. Amine is often used is a type of primary amine. This research is development of previous research. The results data showed a significant

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... hip between type and composition of modifying agent on characterization of amine silica hybrid. This research is focused on optimizing best amine primer composition on hybrid synthesis of silica amine to surface area and pore size. As modifying agent used APTS in ethanol, where the integration of numerical analysis, matrix computing, signal processing and graphics are expressed in mathematical notation using matrix laboratory to solve optimization problem. It was concluded that ethanol solvent yields adsorbents with better characterization than water solvents, whereas the addition of APTS as a source of amine compounds gives a significant effect where increase in APTS increments will decrease pores produced.