封装Pt 的方钠石的转晶合成及其加氢活性耐硫性能的研究

LIU Fan; LIU Long-lei; XUE Da; LI Fu-xiang

封装Pt 的方钠石的转晶合成及其加氢活性耐硫性能的研究

刘帆¹,
刘红蕾^{1, 2},
薛达¹,
李福祥^1, ,

1.
太原理工大学精细化工研究所, 山西太原 030024
2.
河北农业大学理工学院, 河北沧州 061100

基金项目:

The project was supported by the National Natural Science Foundation of China 50972097

the Natural Science Foundation of Shanxi Province 2014011012-4

详细信息

中图分类号: O643.32
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- 文章访问数: 74
- HTML全文浏览量: 33
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2015-11-13
- 修回日期: 2016-01-19
- 网络出版日期: 2021-01-23
- 刊出日期: 2016-04-30

Crystal transformation synthesis, hydrogenation activity and sulfur-tolerant performance of Pt particles encapsulated in sodalite

LIU Fan¹,
LIU Long-lei^{1, 2},
XUE Da¹,
LI Fu-xiang^{1
, ,}

1.
Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China
2.
College of Science and Technology, Agricultural University of Hebei, Cangzhou 061100, China

Funds:

The project was supported by the National Natural Science Foundation of China 50972097

the Natural Science Foundation of Shanxi Province 2014011012-4

More Information

Corresponding author: E-mail: l63f64x@163.com.

摘要

摘要: 通过晶体转化的方法合成封装Pt的方钠石Pt/ SOD。封装Pt的方钠石通过以下两步结晶的方法合成，在100℃结晶12h，120℃结晶144h，130℃结晶96h，140℃结晶60h，150℃结晶42h160℃结晶30h。样品在硫化氢的毒化前后表现了良好的加氢活性。通过X射线衍射法检测样品相的结晶形式。通过H₂-TPD表征给体相Pt/ SOD与受体相HZS-5之间的氢溢流。
- 合成 /
- 封装 /
- 方钠石 /
- 晶型转化 /
- 抗硫性能
Abstract: Noble metals are widely used as hydrogenation catalysts for refining and modifying fuel oil. However, their stability is still a problem. Thus, crystal transformation method was used here to encapsulate platinum (Pt) particles in sodalite through two steps. First, the sample was crystallized at 100 ℃ for 12 h. Then, it was further crystallized at 120 ℃ for 144 h, 130 ℃ for 96 h, 140 ℃ for 60 h, 150 ℃ for 42 h, or 160 ℃ for 30 h. The resultant solid (designated as Pt/SOD) shows high activity and excellent sulfur-tolerant performance in benzene hydrogenation. The crystalline phases were identified by X-ray diffraction technique. The hydrogen spillover effect of Pt/SOD and the spillover hydrogen acceptability of HZSM-5 were investigated with H₂-TPD.
- synthesis /
- encapsulation /
- sodalite /
- crystal transformation /
- sulfur tolerance

HTML全文

Figure 1 Powder XRD patterns of NaA,Pt/NaA and Pt/CaA

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Figure 2 XRD patterns of Pt/NaA-M-N samples (M and N represent the crystallization temperature and time respectively)

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Figure 3 TEM image of Pt/SOD sample

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Figure 4 H₂-TPD profiles of Pt/NaA ,Pt/CaA,Pt/NaA+HZSM-5 and Pt/NaA-SP+HZSM-5

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Figure 5 H₂-TPD profiles of Pt/SOD-M,Pt/SOD-M+HZSM-5 and Pt/SOD-M-SP+HZSM-5

(M represents the crystallization temperature)

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Table 1 Benzene conversions obtained over different catalysts

Entry	Sample	Conversion x/%^a
1	Pt/NaA	0
2	Pt/CaA	14.81
3	Pt/NaA+HZSM-5	58.01
4	Pt/NaA-SP+HZSM-5	0
^a: determined by GC using the area normalization method

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Table 2 Benzene conversions obtained over Pt/SOD-M and its physical mixture with HZSM-5 (M represents the crystallization temperature)

Sample	Conversion x/%^a
Sample	without HZSM-5	mixed with HZSM-5	mixed with HZSM-5 after being poisoned by sulfur
Pt/SOD-120	0	26.69	15.29
Pt/SOD-130	0	35.65	30.90
Pt/SOD-140	0	40.81	32.33
Pt/SOD-150	0	45.17	43.28
Pt/SOD-160	0	3.74	3.51
^a: determined by GC using the area normalization method

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