| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| Effect of Pt content on characteristics and isomerization activity of solid superacid catalyst loaded Pt by microemulsion method |
|
NIU Rui-xia1, SONG Hua-lin2, LI Feng1, ZHANG Jiao-jing1, LIU Yan-xiu1, SHI Yang1, SONG Hua1
|
|
(1.Provincial Key Laboratory of Oil ＆ Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, China;2.Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang 157011, China)
|
| Abstract: |
| A series of Pt-S2O82-/ZrO2-Al2O3(Pt-SZA) solid superacid catalyst were prepared by reverse microemulsion method. The catalysts were characterized by means of FT-IR, BET, TPR, TG-DTA, XRD and TEM, and the effect of the Pt content on the catalytic activity of Pt-SZA for n-pentane isomerization was investigated. The results show that the Pt particle size of Pt-SZA-0.1prepared by microemulsion method is 4.5nm, and the particle diameters distribute uniformly. The proper Pt addition to SZA can improve the acid strength, the specific surface area, thermal stability of the catalyst obviously and reduce the reduction temperature. Under the conditions of 230℃, 2.0MPa, hydrogen/hydrocarbon molar ratio of 4∶1and weight hourly space velocity (WHSV) of 1.0h-1, the isopentane yield and selectivity of Pt-SZA-0.1can reach 60.8％ and 95.2％, respectively. |
| Key words: catalysis solid superacid microemulsion isomerization Pt content |
|
|