title: Novel hydrophobic PDVB/R-SiO2 for adsorption of volatile organic compounds from highly humid gas stream.
abstract: 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 SiO2pores 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 nm) 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 N2 stream at 100 °C. After 10 adsorption-desorption cycles, PDVB/R-SiO2-0.5 continued exhibiting excellent adsorption, indicating superior structural and regeneration abilities.
authors.affiliation: College of Chemical Engineering and Materials Science, Research Institute of Catalytic Reaction Engineering, Zhejiang University of Technology, Hangzhou 310014, China. Electronic address: luhf@zjut.edu.cn.
authors.forename: Han-feng
authors.initials: HF
authors.lastname: Lu
authors.forename: Jie-jing
authors.initials: JJ
authors.lastname: Cao
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.forename: De-li
authors.initials: DL
authors.lastname: Zhan
authors.forename: Yin-fei
authors.initials: YF
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D005740:Gases / Q000737:chemistry*; D006813:Humidity; D057927:Hydrophobic and Hydrophilic Interactions; D012822:Silicon Dioxide / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D005740:Gases; D055549:Volatile Organic Compounds; D012822:Silicon Dioxide
keywords: Adsorbent; Hydrophobicity; Organic–inorganic; Polydivinylbenzene; SiO(2); Volatile organic compounds