Preparation and Characterization of Pt-Sn/SBA-15 Catalysts and Their Catalytic Performances for Long Chain Alkane Dehydrogenation

卢泽湘; 季生福; 刘辉; 李成岳

doi:10.1016/S1004-9541(08)60149-4

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Preparation and Characterization of Pt-Sn/SBA-15 Catalysts and Their Catalytic Performances for Long Chain Alkane Dehydrogenation

Updated：2026-01-06

- Preparation and Characterization of Pt-Sn/SBA-15 Catalysts and Their Catalytic Performances for Long Chain Alkane Dehydrogenation
- Chinese Journal of Chemical Engineering Vol. 16, Issue 5, Pages: 740-745(2008)
- Affiliations：
  
  State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(08)60149-4
  CLC：
- Published：2008
- Accepted：
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LU Zexiang, JI Shengfu, LIU Hui, LI Chengyue. Preparation and Characterization of Pt-Sn/SBA-15 Catalysts and Their Catalytic Performances for Long Chain Alkane Dehydrogenation[J]. , 2008, 16(5): 740-745.
DOI：

LU Zexiang, JI Shengfu, LIU Hui, LI Chengyue. Preparation and Characterization of Pt-Sn/SBA-15 Catalysts and Their Catalytic Performances for Long Chain Alkane Dehydrogenation[J]. , 2008, 16(5): 740-745. DOI： 10.1016/S1004-9541(08)60149-4.

摘要

Abstract

A series of the Pt-Sn/SBA-15 catalysts were prepared and their properties characterized by using X-ray powder diffraction(XRD)

adsorption-desorption

high resolution transmission electron microscope

X-ray photoelectron spectroscopy(XPS)and H

-temperature programmed reduction.Their performances in long chain alkane dehydrogenation were evaluated in a fixed-bed microreactor with dodecane as a model alkane.The results indicated that SBA-15 maintained the well-order mesoporous structure during the reaction.The performance of the catalyst was found not dominated by its textural properties

but by the molar ratio of Sn to Pt which governed the degree of Sn reduction.Owing to the highest degree of Sn reduction

1%(by mass)Pt-1.8%(by mass)Sn/SBA-15 showed the best catalytic activity.At 0.1 MPa and 470℃

the molar ratio of hydrogen to alkane at 4

and liquid hourly space velocity(LHSV)20 h

-1

the dodecane conversion is 10%

and the dodecene selectivity is about 70%.

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