User-friendly synthesis of nitrogen-containing polymer and microporous carbon spheres for efficient CO2 capture

作者：Liu, Lei; Deng, Qing-Fang; Hou, Xiao-Xu; Yuan, Zhong-Yong^*

来源：Journal of Materials Chemistry, 2012, 22(31): 15540-15548.

DOI：10.1039/c2jm31441j

• ZEOLITIC IMIDAZOLATE FRAMEWORKS
• METAL-ORGANIC FRAMEWORKS
• HIGH-PRESSURE ADSORPTION
• ACTIVATED CARBON
• DIOXIDE CAPTURE
• SURFACE-AREA
• STORAGE CAPACITY
• HYDROGEN
• POROSITY
• METHANE

Spherical nitrogen-containing polymer and microporous carbon materials have been synthesized by using hexamethylenetetramine as nitrogen source and one of the carbon precursors under solvothermal conditions, without using any surfactant or toxic reagent such as formaldehyde. The synthesis strategy is user-friendly, cost-effective, and can be easily scaled up for production. The microporous carbon spheres exhibit high surface areas of 528-936 m(2) g(-1) with a micropore size of 0.6-1.3 nm. The synthesized microporous carbons show a good capacity to store CO2, which is mainly due to the presence of nitrogen-containing groups and a large amount of narrow micropores (< 1.0 nm). At 1 atm, the equilibrium CO2 capture capacities of the obtained microporous carbons are in the range of 3.9-5.6 mmol g(-1) at 0 degrees C and 2.7-4.0 mmol g(-1) at 25 degrees C.

• 出版日期2012
• 单位南开大学