采用连续共沉淀方法制备了无定形Fe-Cu-K-SiO2催化剂,利用连续共沉淀与喷雾干燥成型技术相结合的方法制备了不同粒径的微球形Fe-Cu-K-SiO2催化剂.在接近反应工况的条件下对催化剂进行了浆态床费-托合成(FTS)反应性能评价,并对催化剂进行了物性表征.表征结果表明,无定形催化剂没有规整的外形和均一的粒径分布,微球形催化剂的表面光滑,球形度好,颗粒分布均匀.浆态床FTS反应评价结果表明,尽管无定形催化剂的初活性及最高活性较高,但蜡产物与催化剂的在线分离困难;随着成型时平均粒径的增大,微球形催化剂的活性降低,但失活速率减慢,烃产物选择性向轻组分方向偏移,容易实现蜡产物与催化剂的在线分离.
参考文献
[1] | Anderson R B.Fischer-Tropsch Synthesis[M].New York:Academic Press,Inc,1984 |
[2] | BaiL;Xiang H W;Li Y W;Han Y Z Zhong B .[J].FUEL,2002,81(11-12):1577. |
[3] | Dry M E .[J].Catalysis Today,2002,71(3-4):227. |
[4] | Schulz H .[J].Applied Catalysis A:General,1999,186(1-2):3. |
[5] | Dry M E .[J].Applied Catalysis A:General,1996,138(02):319. |
[6] | Shroff MD.;Coulter KE.;Kohler SD.;Harrington MS.;Jackson NB.;Sault AG.;Datye AK.;Kalakkad DS. .ACTIVATION OF PRECIPITATED IRON FISCHER-TROPSCH SYNTHESIS CATALYSTS[J].Journal of Catalysis,1995(2):185-207. |
[7] | 刘福霞,郝庆兰,王洪,杨勇,白亮,朱玉雷,田磊,张志新,相宏伟,李永旺.钾助剂对F-T合成铁基催化剂浆态床反应性能的影响[J].催化学报,2004(11):878-886. |
[8] | Yang Y;Xiang HW;Tian L;Wang H;Zhang CH;Tao ZC;Xu YY;Zhong B;Li YW .Structure and Fischer-Tropsch performance of iron-manganese catalyst incorporated with SiO2[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2005(1/2):105-122. |
[9] | Luo M S;O'Brien R J;Bao S Q;Davis B H .[J].Applied Catalysis A:General,2003,239(1-2):111. |
[10] | Li S;Li A;Krishnamoorthy S;Iglesia E .[J].Catalysis Letters,2001,77(04):197. |
[11] | Hao QL;Liu FX;Wang H;Chang J;Zhang CH;Bai L;Xiang HW;Li YW;Yi F;Xu BF .Effect of reduction temperature on a spray-dried iron-based catalyst for slurry Fischer-Tropsch synthesis[J].Journal of molecular catalysis, A. Chemical,2007(26):104-111. |
[12] | 郝庆兰,白亮,相宏伟,李永旺,易凡,徐斌富.还原空速对Fe/Cu/K/SiO2催化剂浆态床F-T合成性能的影响[J].化工学报,2006(02):324-330. |
[13] | Luo M S;Davis B H .[J].Fuel Processing Technology,2003,83(1-3):49. |
[14] | Bukur D B;Lang X S;Ding Y J .[J].Applied Catalysis A:General,1999,186(1-2):255. |
[15] | O'Brien R J;Xu L G;Spicer R L;Davis B H .[J].Energy and Fuels,1996,10(04):921. |
[16] | 相宏伟;刘福霞;郝庆兰;张成华,白亮,张志新,李永旺 .[P].CN 1583259,2006. |
[17] | Zhao R;Goodwin J G;Oukaci R .[J].Applied Catalysis A:General,1999,189(01):99. |
[18] | Kündig W;Bommel H;Constabaris G;Lindquist R H .[J].Physical Review,1966,142:327. |
[19] | Kolk B;Albers A;Leith I R;Howden M G .[J].Applied Catalysis A:General,1988,37(1-2):57. |
[20] | Bukur DB.;Rosynek MP.;Li CP.;Wang DJ.;Rao KRPM.;Huffman GP.;Okabe K. .ACTIVATION STUDIES WITH A PRECIPITATED IRON CATALYST FOR FISCHER-TROPSCH SYNTHESIS .1. CHARACTERIZATION STUDIES[J].Journal of Catalysis,1995(2):353-365. |
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