| 金属助剂对Pt/SAPO-11催化剂物化及异构性能的影响 |
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| 引用本文： | 刘维桥,尚通明,周全法,刘平,任杰,孙予罕.金属助剂对Pt/SAPO-11催化剂物化及异构性能的影响[J].燃料化学学报,2010,38(2):212-217. |
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| 作者姓名： | 刘维桥 尚通明 周全法 刘平 任杰 孙予罕 |
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| 作者单位： | 1.School of Chemistry and Chemical Engineering, Jiangsu Teachers University of Technology, Changzhou 213001,China;
,2.Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China |
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| 基金项目： | 江苏省重点建设实验室开放研究课题 |
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| 摘 要： | 通过浸渍法制备了Pt/SAPO-11催化剂,分步浸渍法制备了LaPt/SAPO-11、CePt/SAPO-11和SnPt/SAPO-11双金属催化剂。通过X射线衍射、低温氮物理吸附、氨程序升温脱附、氢气化学吸附和吡啶吸附红外等手段对所得样品进行了表征。实验结果表明,助剂的引入导致了催化剂的比表面积和微孔孔容降低,B酸量减少而L酸量增加,总酸量有所下降,Pt组分的分散度提高。在360℃时,对正庚烷的临氢异构化反应中,Pt/SAPO-11催化剂的正庚烷转化率为65.14%,C7异构体收率为61.67%;当分别加入La和Ce,Pt/SAPO-11的正庚烷转化率提高至77.40%和78.12%,C7异构体收率分别提高至69.72%和68.48%;而加入Sn后,Pt/SAPO-11的正庚烷转化率和C7异构体收率分别降至63.22%和59.09%。
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| 关 键 词： | Pt/SAPO-11催化剂 稀土 助剂 正庚烷 临氢异构化反应 |
| 收稿时间： | 2009-07-24 |
| 修稿时间： | 2009-10-29 |
Study on the physicochemical and isomerization property of Pt/SAPO-11 catalysts promoted by metallic additive |
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| LIU Wei-qiao,SHANG Tong-ming,ZHOU Quan-fa,LIU Ping,REN Jie,SUN Yu-han.Study on the physicochemical and isomerization property of Pt/SAPO-11 catalysts promoted by metallic additive[J].Journal of Fuel Chemistry and Technology,2010,38(2):212-217. |
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| Authors: | LIU Wei-qiao SHANG Tong-ming ZHOU Quan-fa LIU Ping REN Jie SUN Yu-han |
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| Institution: | LIU Wei-qiao1,SHANG Tong-ming1,ZHOU Quan-fa1,LIU Ping2,REN Jie2,SUN Yu-han2(1.School of Chemistry , Chemical Engineering,Jiangsu Teachers University of Technology,Changzhou 213001,China(2.Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China) |
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| Abstract: | Monometallic catalyst Pt/SAPO-11 was prepared by impregnation method.Bimetallic catalysts including LaPt/SAPO-11,CePt/SAPO-11 and SnPt/SAPO-11 were prepared by sequential impregnation method.X-ray diffraction(XRD),nitrogen adsorption,temperature-programmed desorption of ammonia(NH3-TPD),chemisorption of hydrogen and Fourier transform infrared spectroscopy(FT-IR) techniques were employed to characterize the catalyst.The results showed that BET surface areas,microporous volume,the amount of Bronsted acid and ... |
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| Keywords: | Pt/SAPO-11 rare earths additive n-heptane hydroisomerization |
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