对近期筛选出的一种重质烃合成反应性能良好的Co/SiO2催化剂进行了500h的寿命试验,考察了在不同反应温度、压力和空速条件下催化剂的反应性能.结果表明,随着反应的进行,催化剂合成重质烃的选择性基本保持不变,但催化剂的活性缓慢下降;经原位再生后,催化剂活性可基本恢复到原来的水平.烃产物主要由烷烃组成,C5+中烯烃仅占2.25%,产物主要集中在C12～C20馏分段,水相产物中含3.56%～6.56%的有机含氧化合物,其中主要是低碳醇.
A Co/SiO2 catalyst is prepared and used in F-T reaction for thesynthesis of heavy hydrocarbons. The effects of various operation conditions including temper ature, pressure and space velocity on its performance are investigated and a tes t for the catalyst stability is carried out for 500 h. The experimental results show that the C5+ selectivity has only a little change on stream, but CO conversion gradually decreases. Thus the reaction temperature must be raised slow ly to maintain the catalyst activity. After H2 regeneration in situ, the a ctivity is approximately recovered to the original level. Hydrocarbon products are mainly composed of alkane and the content of alkene in C5+ hydrocarbons is about 2.25%. C12～C20 distillate range is superior in hydrocar bon products. The products in water phase contain 3.56%～6.56% of oxygenates w hich are mainly lower carbon number alcohols.
参考文献
| [1] | Ernst B;Hilaire L;Kiennemann A .[J].Catalysis Today,1999,50(02):413. |
| [2] | Frydman A;Castner D G;Campbell C T .[J].Journal of Catalysis,1999,188(01):1. |
| [3] | Oukaci R;Singleton A H;Goodwin Jr J G .[J].Applied Catalysis A:General,1999,186(1-2):129. |
| [4] | Sie S T .[P].USP 4?579?986,1986. |
| [5] | Geerlings J J C;Goes M F;Huisman H M .[P].USP 5-981-608,1989. |
| [6] | Leviness S C;Mitchell W N .[P].USP 5?817?701,1998. |
| [7] | Agee M A;Weick L J .[P].US 6?011?073,2000. |
| [8] | Sie S T .[J].Reviews in Chemical Engineering,1998,14(02):109. |
| [9] | 陈建刚,相宏伟,孙予罕.硅胶来源对费-托合成用Co/SiO2催化剂性能的影响[J].催化学报,2000(02):169-171. |
| [10] | 相宏伟;张永青;钟炳 等.[J].分子催化,1997,11(03):196. |
| [11] | Malessa R;Baerns M .[J].Industrial and Engineering Chemistry Research,1988,27(02):279. |
| [12] | Colley S E;Copperthwaite R G;Hutchings G J .[J].Applied Catalysis A:General,1992,84:1. |
| [13] | 张志新;唐曙光;林恒生 等.[J].天然气化工,1992,17(02):7. |
| [14] | Iglesia E .[J].Applied Catalysis A:General,1997,161(1-2):59. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%