探讨了利用水热改性法来制备Ni/Al2O3催化剂,着重研究了水热改性前后催化剂形貌、结构及组成的变化.SEM,XRD,DTA-TG和XPS等方法被用来表征材料表面结构性质.研究结果表明:水热改性可促进Ni以网状形式吸附于Al2O3载体表面,水热时间增加可提高Ni(NO3)2.xH2O在基体表面的吸附,使得网状烧结产物(NiAl2O4/Al2O3)有更大的比表面积和更高的Ni含量.
参考文献
| [1] | Dillen A J V;Terorde R J A M;Lensveld D J et al.[J].Journal of Catalysis,2003,216:257. |
| [2] | Monzon A.;Garetto TF.;Borgna A. .Sintering and redispersion of Pt/gamma-Al2O3 catalysts: a kinetic model[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2003(1/2):279-289. |
| [3] | Vos B.;Bliek A.;Poels E. .Impact of calcination conditions on the structure of alumina-supported nickel particles[J].Journal of Catalysis,2001(1):77-88. |
| [4] | Andrade M C D;Filgueiras M R T;Ogasawara T.[J].Journal of the European Ceramic Society,2002:505. |
| [5] | Byrappa K;Yoshimura M.Handbook of Hydrothermal Technology[M].New Jersey:Noyes Publications,2001 |
| [6] | Desset S.;Spalla O.;Lixon P.;Cabane B. .Variation of the surface state of alpha-alumina through hydrothermal treatments[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2002(1):1-10. |
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