Novel hydrophobic PDVB/R-SiO2 for adsorption of volatile organic compounds from highly humid gas stream

作者：Lu, Han-feng^*; Cao, Jie-jing; Zhou, Ying; Zhan, De-li; Chen, Yin-fei

来源：Journal of Hazardous Materials, 2013, 262: 83-90.

DOI：10.1016/j.jhazmat.2013.08.033

• SiO2
• Polydivinylbenzene
• Organic-inorganic
• Adsorbent
• Volatile organic compounds
• Hydrophobicity

A novel organic-inorganic hydrophobic polydivinylbenzene-silica adsorbent (PDVB/R-SiO2) was successfully prepared by introducing a specific amount of divinylbenzene and solvent (i.e., tetrahydrofuran) to SiO2 pores and initiating polymerization under solvothermal conditions. New smaller structures and surface areas were formed in the SiO2 pores. The PDVB/R-SiO2-0.5 samples exhibited a bimodal pore size distribution with both SiO2 micropores/mesopores (0.5-2.0 am) and mesopores (2.0-5.0 nm). The surface areas increased from 116 m(2)/g (SiO2) to 246 m(2)/g. The breakthrough curves of toluene adsorption indicated that the amount adsorbed on PDVB/R-SiO2-0.5 was 12 times higher than that on SiO2. The highly humid environment exhibited no effect on adsorption because the surface of PDVB was functionalized. The adsorbed toluene was easily desorbed in hot N-2 stream at 100 degrees C. After 10 adsorption-desorption cycles, PDVB/R-SiO2-0.5 continued exhibiting excellent adsorption, indicating superior structural and regeneration abilities.

• 出版日期2013-11-15
• 单位浙江工业大学