高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (2): 355.

• 研究论文 • 上一篇    下一篇

Pt含量及活化温度对固体超强酸催化剂异构化性能的影响

宋华1,2,董鹏飞3,石洋1   

  1. 1. 东北石油大学化学化工学院, 
    2.   石油与天然气化工黑龙江省重点实验室,  大庆 163318;
    3.  中国石化洛阳石油化工工程公司, 洛阳  471003
  • 收稿日期:2010-05-11 修回日期:2010-06-30 出版日期:2010-02-10 发布日期:2011-02-23
  • 通讯作者: 宋华 E-mail:songhua@dqpi.edu.cn
  • 基金资助:

    中国石油天然气股份有限公司科技风险创新研究项目(批准号:  07-06D-01-04-03-02)资助.

Effects of Pt Contents and Activation Temperature on the Isomerization Performance over Solid Superacid Pt-S2O2-8/ZrO2-Al2O3

SONG Hua1,2*, DONG Peng-Fei3, SHI Yang1   

  1. 1.  College of Chemistry and Chemical Engineering,   
    2.  Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas,    Northeast Petroleum University,   Daqing 163318,   China; 
    3.  Luoyang Petrochemical Engineering Corporation,  SINOPEC,  Luoyang 471003, China
  • Received:2010-05-11 Revised:2010-06-30 Online:2010-02-10 Published:2011-02-23
  • Contact: SONG Hua E-mail:songhua@dqpi.edu.cn
  • Supported by:

    中国石油天然气股份有限公司科技风险创新研究项目(批准号:  07-06D-01-04-03-02)资助.

摘要: 本文制备了固体超强酸Pt- S2O82-/ZrO2-Al2O3催化剂,采用XRD、TPR、TG-DTA 、FT-IR等表征手段对催化剂进行了表征,并在高压微反-色谱联合装置上,考察了Pt质量分数和活化温度对催化剂正戊烷异构化性能的影响. 结果表明,Pt能使催化剂的还原温度降低;增强载体表面氢气的溢流效应,提高酸强度;Pt质量分数0.10%、活化温度300℃的催化剂异构化活性最高,在反应温度220℃、压力2.0MPa、氢烃摩尔比4:1、质量空速1.0h-1时,异戊烷产率达62.3%. 在100h内异戊烷收率可稳定在55%左右,选择性在98.0%以上.  

关键词: 固体超强酸, S2O82-;异构化;Pt;ZrO2-Al2O3

Abstract: The Pt-S2O82-/ZrO2-Al2O3 solid superacid catalysts were prepared and the obtained catalysts were characterized by XRD, TPR, TG-DTA and FT-IR. The catalysts were evaluated on a lab-scale high pressure microreactor with online chromatogram unit for n-pentane isomerization as a probe reaction. The effects of the Pt content and the activation temperature on the catalyst performance were studied. The results showed that Pt can reduce the catalyst reduction temperature. The Pt-S2O82-/ZrO2-Al2O3 catalyst with 0.1% Pt and activation temperature of 300℃ exhibited the highest activity for n-pentane isomerization. At reaction temperature of 220oC, pressure of 2.0 MPa, hydrogen/ hydrocarbon molar ratio of 4:1, and MHSV of 1.0 h?1, the isopentane yield were 62.3%. The isopentane yield was stabilized in about 55% and the selectivity was higher than 98.0% within 100h.

Key words: solid superacid, S2O82-;isomerization;Pt;ZrO2-Al2O3

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