Journal
ENERGY & FUELS
Volume 31, Issue 12, Pages 13933-13941Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.7b02543
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Funding
- National Natural Science Foundation of China [21606130, 21306089]
- Science and Technology Department of Jiangsu [BY2015005-02]
- State Key Laboratory of Materials Oriented Chemical Engineering [ZK201610]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Hierarchical porous ZSM-5 (HP-ZSM-5) was constructed using organosilanes as the growth inhibitors for CO2 capture. The properties of adsorbents were characterized by X-ray diffraction, N-2 adsorption/desorption, scanning electron microscopy, temperature-programmed desorption of carbon dioxide, and Al-27 magic angle spinning nuclear magnetic resonance. It was found that HP-ZSM-5 samples synthesized by organosilanes had a significant effect on the microstructure and morphology. CO, adsorption capacity of HP-ZSM-5 was up to 58.26 cm(3) g(-1) at 0 degrees C and 1 bar, significantly higher than that of the ZSM-5 sample. The effective improvement of CO2 adsorption performance mainly originated from the micro-/mesoporous composite structure and complex surface morphology, which can provide low -resistant pathways for CO2 through the porous network. Besides, in situ Fourier transform infrared spectroscopy was carried out to study the adsorption process on adsorbents, and the results indicated that a faster physical adsorption process was achieved as a result of the introduction of mesopores.
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