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Journal of Porous Materials

, Volume 26, Issue 1, pp 227–237 | Cite as

Hydrophobic and hierarchical modification of TS-1 and application for propylene epoxidation

  • Baohe Wang
  • Liang Lu
  • Baomin Ge
  • Shuang ChenEmail author
  • Jing Zhu
  • Dongwei Wei
Article
  • 113 Downloads

Abstract

Hierarchical and hydrophobic TS-1 was obtained by the desilication and silanization of TS-1. The modified TS-1 was characterized by adsorption–desorption isotherms analysis, transmission electron microscope, scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy and contact angle measurement. It demonstrates that modified TS-1 has hierarchical channel structures consisting of micropores and mesopores. The average pore diameters of the micropores and mesopores are 0.55 and 5–10 nm, respectively. The contact angle measurements indicate that modified TS-1 is hydrophobic. The effects of the desilication and silanization of TS-1 on the catalyst structure and catalytic properties of propylene epoxidation were investigated. Modified TS-1 showed better catalytic activity and catalytic life than the TS-1 without modification. The H2O2 conversion, PO selectivity and PO concentration reached 99.72%, 91.33% and 0.85 mol L−1, respectively.

Keywords

TS-1 Hierarchical Hydrophobic Propylene epoxidation 

Abbreviations

RC

Relative crystallinity

PO

Propene oxide

HPPO

Hydrogen peroxide-to-propene oxide

MME

Propylene glycol monomethyl ether

PG

Propylene glycol

XRD

X-ray diffraction

FT-IR

Fourier transform infrared spectroscopy

TEM

Transmission electron microscope

SEM

Scanning electron microscope

TMCS

Trimethylchlorosilane

TCD

Thermal conductivity detector

TEOS

Tetraethyl orthosilicate

TBOT

Tetra-butyl ortho-titanate

TPAOH

Tetrapropylammonium hydroxide

ICP-OES

Inductively coupled plasma optical emission spectrometry

Notes

Acknowledgements

The authors are grateful of financial support by National Natural Science Foundation of China (21606168).

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Baohe Wang
    • 1
  • Liang Lu
    • 1
  • Baomin Ge
    • 1
  • Shuang Chen
    • 1
    Email author
  • Jing Zhu
    • 1
  • Dongwei Wei
    • 1
  1. 1.Key Laboratory for Green Chemical Technology of Ministry of Education, Research and Development Center of Petrochemical TechnologyTianjin UniversityTianjinPeople’s Republic of China

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