| 钨含量对固体超强酸催化剂Pd-SO42-/ZrO2-WO3异构化性能的影响 |
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| 引用本文： | 宋华,张旭,梁宝兴.钨含量对固体超强酸催化剂Pd-SO42-/ZrO2-WO3异构化性能的影响[J].燃料化学学报,2012,40(4):487-493. |
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| 作者姓名： | 宋华 张旭 梁宝兴 |
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| 作者单位： | 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 |
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| 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) |
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| 摘 要： | 为了研究Pd-SO42-/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-SO42-/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。
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| 关 键 词： | 固体超强酸 催化剂 钨 含量 异构化 |
| 收稿时间： | 2011-05-09 |
Effects of W content on the isomerizationperformance of solid super acid Pd-SO42-/ZrO2-WO3 |
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| SONG Hua
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ZHANG Xu
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LIANG Bao-xing.Effects of W content on the isomerizationperformance of solid super acid Pd-SO42-/ZrO2-WO3[J].Journal of Fuel Chemistry and Technology,2012,40(4):487-493. |
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| Authors: | SONG Hua ZHANG Xu LIANG Bao-xing |
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| Institution: | 1(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) |
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| Abstract: | The effects of W content on the performance of the Pd-SO42-/ZrO2-WO3 solid 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-SO42-/ZrO2-WO3 solid 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 1.0 h-1,H2/ n-pentane mol ration of 4.0 and reaction pressure of 2.0 MPa,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 80 h. |
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| Keywords: | solid super acid catalyst W content isomerization |
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