石油炼制与化工

• 催化剂 • 上一篇    下一篇

Pt/Al2O3-TiO2催化剂制备及其对重整抽余油的加氢性能

郭振莲1,张孔远2,周洋2,刘晨光2   

  1. 1. 中国石油大学(华东)化学化工学院;山东京博控股股份有限公司
    2. 中国石油大学(华东)化学化工学院
  • 收稿日期:2011-05-27 修回日期:1900-01-01 出版日期:2011-12-12 发布日期:2011-12-12
  • 通讯作者: 郭振莲

STUDY ON THE PREPARATION OF Pt/Al2O3-TiO2 CATALYST FOR HYDROGENATION OF REFORMATE RAFFINATE

LIU Chen-Guang   

  • Received:2011-05-27 Revised:1900-01-01 Online:2011-12-12 Published:2011-12-12

摘要: 制备了不同焙烧温度的Al2O3-TiO2载体,采用浸渍法得到相应的Pt/Al2O3-TiO2催化剂,采用BET、XRD、TPR、TEM及氢氧滴定等方法对所制备的催化剂进行表征,以重整抽余油为原料进行烯烃和芳烃的加氢活性评价。结果表明:用于重整抽余油加氢的Pt/Al2O3-TiO2催化剂的优化制备条件为载体焙烧温度900 ℃,催化剂焙烧温度350 ℃,催化剂还原温度200 ℃;该催化剂的加氢活性随着反应温度的升高而提高;在反应温度200 ℃、反应压力3.0 MPa、氢油体积比200︰1、体积空速2.0 h-1的条件下,重整抽余油的烯烃和芳烃转化率均达到100%。

关键词: 重整抽余油, 加氢精制, 铂, 氧化铝, 氧化钛, 烯烃

Abstract: Pt/Al2O3-TiO2 catalysts were prepared by impregnation method using Al2O3-TiO2 supports calcined under various temperatures. The prepared catalysts were characterized by BET, XRD, TPR, TEM and H2-O2 titration techniques, and the activity of catalysts for olefin and aromatic hydrocarbon hydrogenation was evaluated using reformate raffinate as feedstock. Results showed that the optimum preparation conditions of Pt/Al2O3-TiO2 catalyst for hydrogenation of reformate raffinate were as follows: support calcination temperature of 900 ℃, catalyst calcination temperature of 350 ℃ and reduction temperature of 200 ℃. The hydrogenation activity of Pt/Al2O3-TiO2 catalyst increased with the increase of reaction temperature. Under a reaction temperature of 200 ℃, a reaction pressure of 3.0 MPa, hydrogen/oil volume ratio of 200 and LHSV of 2.0 h-1, over Pt/Al2O3-TiO2 catalyst prepared with optimum conditions, the conversions of olefin and aromatic hydrocarbon in reformate raffinate reached 100%.

Key words: Reforming raffinate, Hydrofining, Platinum, aluminium oxide, titanium oxide, olefin