Structured Polyvinyl Alcohol/Zeolite/Carbon Composites Prepared Using Supercritical Fluid Extraction Techniques as Adsorbent for Bioethanol Dehydration

Figure 2

SEM-mapping micrograph of representative sample PVA/Zeo/AC. (a) 1 : 1 : 1; (b) 1 : 1 : 0.75; (c) 1 : 1 : 0.5; (d) 1 : 1 : 0.25; (e) 1 :1 : 0. C; O; Si.

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