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| Optimization of preparation of mesoporous Pt/SAPO-11 and its performance evaluation for the production of aviation kerosene by decarboxylation of oleic acid |
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| DOI： |
| KeyWord:mesoporous Pt/SAPO-11 crystallization temperature crystallization time calcination temperature C8-C17 alkanes |
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| Author Name | Affiliation | | LIU Xiaolong1, MA Jingye1, YUAN Hong1,2,3 | 1.Chemical Science and Engineering College, North Minzu University, Yinchuan 750021, China
2.National Civil Affairs Commission Key Laboratory of Chemical Technology, Yinchuan 750021, China
3.Ningxia Key Laboratory of Solar Energy Chemical Conversion Technology, Yinchuan 750021, China |
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| Abstract: |
| In order to improve the catalytic reaction effect of SAPO-11 molecular sieve in catalyzing the decarboxylation of oleic acid to prepare C8-C17 alkanes, using polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123), and dodecyl trimethyl ammonium bromide (DTAB) as mesoporous double template agents, the mesoporous Pt/SAPO-11 molecular sieve catalyst was prepared by in-situ synthesis method,and the effects of different crystallization temperature, crystallization time and calcination temperature on the crystallinity, pore structure and morphology of mesoporous Pt/SAPO-11 were studied. Also it was uesed for the preparation of C8-C17 alkanes by decarboxylation of oleic acid. The results showed that when the crystallization temperature was 190℃, the crystallization time was 36 h, the calcination temperature was 650℃, and the calcination time was 5 h, the synthesized mesoporous Pt/SAPO-11 had a larger specific surface area, higher crystallinity, more suitable bore size and better morphological characteristics. In the reaction of oleic acid decarboxylation to prepare C8-C17 alkanes, when the reaction temperature was 340℃, the catalyst-oil ratio was 1∶10, and the reaction time was 6 h, the yield of C8-C17 alkanes could reach 78.3%. |
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