Inverse gas chromatography applied in the surface properties evaluation of mesocellular silica foams modified by sized nickel nanoparticles
Qian, L; Lv, X; Ren, Y; Wang, H; Chen, G; Wang, Y; Shen, J
| HERO ID | 2799538 |
|---|---|
| In Press | No |
| Year | 2013 |
| Title | Inverse gas chromatography applied in the surface properties evaluation of mesocellular silica foams modified by sized nickel nanoparticles |
| Authors | Qian, L; Lv, X; Ren, Y; Wang, H; Chen, G; Wang, Y; Shen, J |
| Journal | Journal of Chromatography A |
| Volume | 1322 |
| Page Numbers | 81-89 |
| Abstract | The mesocellular silica foams (MCF) modified by different sized Ni nanoparticles (≤27.4nm) were prepared through the wetness impregnation of low metal content (0.5-2.0wt%). The technology of inverse gas chromatography (IGC) was used to evaluate the size effect of Ni nanoparticles on the surface property of Ni/MCF and the probes of four n-alkanes (C6-C9), cyclohexane, benzene, toluene, trichloroethylene, and tetrachloroethylene were tested in the 463.2-493.2K temperature range. High free energy of adsorption and enthalpy of adsorption for the aromatic hydrocarbons were found over 1.0wt% Ni/MCF with small nanoparticles of ca. 5nm. The dispersive interaction parameter γS(D), and specific interaction parameter I(sp) increase with Ni nanoparticle size decreasing over Ni/MCF. The results indicate that Ni species highly dispersed on MCF support significantly promote the surface property of the specific interaction with the aromatic structure. |
| Doi | 10.1016/j.chroma.2013.10.091 |
| Pmid | 24267318 |
| Wosid | WOS:000328717200011 |
| Url | https://www.proquest.com/docview/1694490726?accountid=171501&bdid=64565&_bd=nvdyEswSFKXfQqAlgC7S6iqr7zY%3D |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Inverse gas chromatography; MCF; Nickel; Adsorption; Surface properties |