Development of Microporosity in Mesoporous Carbons

作者：Choma Jerzy; Gorka Joanna; Jaroniec Mietek^*; Zawislak Aleksandra

来源：Topics in Catalysis, 2010, 53(3-4): 283-290.

DOI：10.1007/s11244-009-9407-x

• Mesoporous carbons
• Colloidal templating
• KOH activation
• Phenolic resins
• Microporosity

Monolithic carbons with uniform and spherical mesopores can be easily obtained by filling the pores of colloidal silica monoliths with carbon precursors followed by carbonization and silica dissolution. In this study three different phenolic resin blends: resorcinol and crotonaldehyde (MC-RC), phenol and paraformaldehyde (MC-PP), and resorcinol and furfural (MC-RF) were used as carbon precursors. Subsequent heating and carbonization of the resulting silica-phenolic resin nanocomposites followed by silica dissolution afforded monolithic carbons with spherical mesopores matching the size of the silica colloids used. Development of microporosity in these carbons was achieved by post-synthesis KOH activation. This study shows that the combination of colloidal templating with post-synthesis activation affords monolithic micro-mesoporous carbons with large specific surface area and well-developed accessible porosity for adsorption, catalysis, environmental and energy-related applications.

• 出版日期2010-3