Synthesis, Characterization and n-Hexane Adsorption Performance of ZIF-8
Liu Kefeng; Ren Danni; Sun Hui; Shen Benxian; Liu Jichang
| HERO ID | 4132158 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | Synthesis, Characterization and n-Hexane Adsorption Performance of ZIF-8 |
| Authors | Liu Kefeng; Ren Danni; Sun Hui; Shen Benxian; Liu Jichang |
| Journal | Gaodeng Xuexiao Huaxue Xuebao / Chemical Journal of Chinese Universities |
| Volume | 37 |
| Issue | 10 |
| Page Numbers | 1856-1862 |
| Abstract | The zeolitic imidazolate framework ZIF-8 was synthesized through a solvothermal process employing methanol as the solvent, zinc nitrate hexahydrate and 2-methylimidazole as zinc source and organic ligand, re. spectively. The products were characterized by means of XRD, N-2 adsorption, TG-DSC and SEM. In addi. tion, selective adsorption performance for n-hexane on ZIF-8 was investigated. It is indicated that synthesized ZIF-8 has the sodalite crystal structure and a high crystallinity. From the N-2 adsorption results, ZIF-8 product has a pore size range of 0-4-1-1 nm, BET specific surface area of 1836 m(2)/g and pore volume of 0-65 cm(3)/g. Both TG-DSC and high-temperature in situ XRD analyses suggest its excellent thermal stability. As the temperature increases from 283 to 313 K, the diffusion coefficient for n-hexane adsorption on ZIF-8 varies from 2-53x10(-12) to 8-88x10(-12) cm(2)/s and diffusion activation energy is evaluated to be 31-11 kJ/mol. At 308 K, the dynamic adsorption capacity and Thomas adsorption rate constant for n-hexane on ZIF-8 are 187-3 mg/g and 2-17x10(-3) mL center dot min(-1) center dot mg(-1), respectively. As compared to 5A molecule sieve, ZIF-8 displays around 100% higher adsorption capacity and almost 70% faster diffusion rate. |
| Doi | 10.7503/cjcu20160263 |
| Wosid | WOS:000387777700015 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991263365&doi=10.7503%2fcjcu20160263&partnerID=40&md5=16aa01d2ee237215238c03641099718a |
| Is Public | Yes |
| Language Text | Chinese |
| Keyword | ZIF-8; n-Hexane; Adsorption kinetics; Adsorption capacity; Dynamic adsorption |