钨含量对固体超强酸催化剂Pd-SO42-/ZrO2-WO3异构化性能的影响

宋华; 张旭; 梁宝兴

钨含量对固体超强酸催化剂Pd-SO₄^2-/ZrO₂-WO₃异构化性能的影响

宋华^1,2,,
张旭¹,
梁宝兴¹

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, 石油与天然气化工省重点实验室, 黑龙江大庆 163318

基金项目: 中国石油天然气股份有限公司科技风险创新基金项目(07-06D-01-04-03-02)。

详细信息

通讯作者:
宋华, E-mail: Songhua@dqpi.edu.cn; Tel:+86-459-6503167。

中图分类号: TQ426.99
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出版历程
- 收稿日期: 2011-05-09
- 修回日期: 2011-07-28
- 刊出日期: 2012-04-30

Effects of W content on the isomerization performance of solid super acid Pd-SO₄^2-/ZrO₂-WO₃

1.
College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
2.
Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas, Northeast Petroleum University, Daqing 163318, China

摘要

摘要: 为了研究Pd-SO₄^2-/ZrO₂-WO₃型固体超强酸催化剂的异构化性能,以正戊烷异构化为探针反应, 考察了钨(W)含量对催化剂异构化性能的影响。采用X射线衍射(XRD)、FT-IR、H₂-TPR、比表面积测定(BET)、热重-差热分析(TG-DTA)和氨-程序升温脱附(NH₃-TPD)手段对催化剂进行了表征,分析了WO₃含量对催化剂酸性、比表面积、氧化还原能力以及晶体结构的影响。结果表明,当WO₃的质量分数为13%焙烧温度为600℃时, Pd-SO₄^2-/ZrO₂-WO₃固体超强酸催化剂的催化活性最好。在反应温度260℃,压力2.0MPa,质量空速1.0h^-1,氢油比为4.0时,异物烷产率为40.1%。在80h内异戊烷收率可稳定在38%左右,选择性在95.3％以上。
- 固体超强酸 /
- 催化剂 /
- 钨 /
- 含量 /
- 异构化
Abstract: The effects of W content on the performance of the Pd-SO₄^2-/ZrO₂-WO₃solid super acid catalyst was studied using n-pentane isomerization as a probe reaction and the catalysts were characterized by X-ray diffraction(XRD), FT-IR, H₂-TPR, specific surface area measurements(BET), thermogravimetry-differential thermal analysis(TG-DTA) and NH₃ temperature-programmed desorption(NH₃-TPD). The effects of WO₃ content on the acidity, surface area and crystal structure of catalyst were researched. The catalytic activity of the Pd-SO₄^2-/ZrO₂-WO₃solid super acid catalyst with a mass fraction of 13% WO₃ which was calcinated at 600℃ was found to be the best. At reaction temperature of 260℃,space velocity of 1.0h^-1,H₂/ n-pentane mol ration of 4.0 and reaction pressure of 2.0MPa, the iso-pentane yield was 40.1%. The iso-pentane yield was stabilized in about 38% and the selectivity is higher than 95.3％within 80h .
- solid super acid /
- catalyst /
- W /
- content /
- isomerization

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参考文献(23)

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