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焙烧温度对微乳液法负载铂制备的Pt-S2O82-/ZrO2-Al2O3催化剂异构化性能的影响

宋华,  孙恩浩,  李锋,  宋华林,  石洋

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文章导航 > 燃料化学学报（中英文）  > 2013 >  41(06): 715-721
宋华, 孙恩浩, 李锋, 宋华林, 石洋. 焙烧温度对微乳液法负载铂制备的Pt-S2O82-/ZrO2-Al2O3催化剂异构化性能的影响[J]. 燃料化学学报（中英文）, 2013, 41(06): 715-721.
引用本文: 宋华, 孙恩浩, 李锋, 宋华林, 石洋. 焙烧温度对微乳液法负载铂制备的Pt-S2O82-/ZrO2-Al2O3催化剂异构化性能的影响[J]. 燃料化学学报（中英文）, 2013, 41(06): 715-721.
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SONG Hua, SUN En-hao, LI Feng, SONG Hua-lin, SHI Yang. Effect of calcination temperature on isomerization performance of Pt-S2O82-/ZrO2-Al2O3 catalyst prepared by microemulsion[J]. Journal of Fuel Chemistry and Technology, 2013, 41(06): 715-721.
Citation: SONG Hua, SUN En-hao, LI Feng, SONG Hua-lin, SHI Yang. Effect of calcination temperature on isomerization performance of Pt-S2O82-/ZrO2-Al2O3 catalyst prepared by microemulsion[J]. Journal of Fuel Chemistry and Technology, 2013, 41(06): 715-721.
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焙烧温度对微乳液法负载铂制备的Pt-S2O82-/ZrO2-Al2O3催化剂异构化性能的影响

  • 1.

    东北石油大学化学化工学院, 黑龙江 大庆 163318;

  • 2.

    东北石油大学石油与天然气化工黑龙江省重点实验室, 黑龙江 大庆 163318;

  • 3.

    牡丹江医学院黑龙江省高校肿瘤疾病防治重点实验室, 黑龙江 牡丹江 157011

基金项目: 中国石油天然气股份有限公司科技风险创新研究(07-06D-01-04-03-02)。
详细信息
    通讯作者:

    宋华林, Tel: 0453-6984321, E-mail: songhualin401@126.com; 宋华(1963-), 女, 黑龙江延寿人, 教授, 主要从事工业催化方面的研究, E-mail: songhua2004@sina.com。

  • 中图分类号: O643.3

Effect of calcination temperature on isomerization performance of Pt-S2O82-/ZrO2-Al2O3 catalyst prepared by microemulsion

  • 1.

    College of Chemistry and Chemical Engineering, Daqing 163318, China;

  • 2.

    Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas, Northeast Petroleum University, Daqing 163318, China;

  • 3.

    Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang 157011, China

    摘要
  • 摘要: 过微乳液法负载Pt制备了Pt-S2O82-/ZrO2-Al2O3(Pt-SZA-X) 催化剂,并采用XRD、BET、FT-IR、TPR、TEM等手段对催化剂进行了表征。以正戊烷异构化反应为探针,考察了焙烧温度对催化剂异构化性能的影响。结果表明,焙烧温度对Pt-SZA-X的还原温度影响不大,但催化剂表面S含量随着焙烧温度的升高而下降;焙烧温度为600~650℃时形成O=S=O结构,此时S与催化剂载体结合比较稳定;焙烧温度为650℃时,可得到单一的ZrO2四方晶相,焙烧温度高于650℃时,比表面积迅速降低,催化剂表面S6+流失严重。在不同温度下焙烧得到的催化剂中,经650℃焙烧的催化剂具有适宜的超强酸位和比表面积,异构化活性最高。在反应温度为230℃、反应压力2.0 MPa、氢烃物质的量比4:1、质量空速1.0 h-1时,催化异戊烷产率达到60.8%。
    Abstract: Pt-S2O82-/ZrO2-Al2O3(Pt-SZA-X) solid superacid catalysts were prepared by microemulsion method and characterized by XRD, BET, FT-IR, TPR and TEM. The effects of calcination temperatures on the isomerization performance were studied by using n-pentane isomerization as a probe reaction. It was found that the calcination temperature has less influence on the reduction temperature of the Pt-SZA-X,but the S content over catalyst decreased with increasing calcination temperature. The O=S=O structure formed at calcination temperature range of 600 to 650℃ and the combination between of S and catalyst support was relatively stable. The pure monoclinic phase of ZrO2 were observed with sample calcined at 650℃. When the calcination temperature is higher than 650℃, the specific surface area decreases rapidly and the loss of S6+ on the surface of catalyst is seriously. Among the catalysts obtained at various calcination temperatures, the catalyst calcined at 650℃ has appropriate amount of superacid sites and surface area and the highest isomerization activity. At reaction temperature of 230℃, pressure of 2.0 MPa, hydrogen/hydrocarbon molar ratio of 4:1 and mass hourly space velocity of 1.0 h-1, the isopentane yield is 60.8%.
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  • 收稿日期:  2012-12-10
  • 修回日期:  2013-02-09
  • 刊出日期:  2013-06-30

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