Effects of Cesium Ions and Cesium Oxide in Side-Chain Alkylation of Toluene with Methanol over Cesium-Modified Zeolite X

He Han, Min Liu, Fanshu Ding, Yiren Wang, Xinwen Guo, Chunshan Song

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The side-chain alkylation of toluene with methanol was studied on cesium-modified zeolite X prepared by ion-exchange and impregnation with different cesium precursors. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, X-ray fluorescence spectroscopy, Ar physical adsorption-desorption, NH3 temperature-programmed desorption (TPD), CO2-TPD, thermogravimetric/differential thermal analysis, ultraviolet-Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy. Cesium hydroxide was found to be the most effective precursor for modifying zeolite X. Cesium ions bonded on the framework and cesium oxide formed in the pore were found to take different roles in this reaction. Cesium ions could adsorb and activate toluene or modify the basicity of framework oxygen, whereas cesium oxide could ensure the effective conversion of methanol to formaldehyde and inhibit the process of coke deposition. A possible reaction pathway for this reaction over cesium-modified samples was described. The synergistic effect of cesium ions and cesium oxide was proven to be important for the formation of styrene and ethylbenzene.

Original languageEnglish (US)
Pages (from-to)1849-1858
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume55
Issue number7
DOIs
StatePublished - Feb 24 2016

Fingerprint

Zeolites
Cesium
Alkylation
Toluene
Oxides
Methanol
Ions
Temperature programmed desorption
Styrene
Ethylbenzene
Alkalinity
Ultraviolet spectroscopy
Formaldehyde
Impregnation
Coke
Differential thermal analysis
Spectrometry
Raman spectroscopy
Desorption
Ion exchange

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

@article{5f55f3971e2c433cbd5097ac5e68967d,
title = "Effects of Cesium Ions and Cesium Oxide in Side-Chain Alkylation of Toluene with Methanol over Cesium-Modified Zeolite X",
abstract = "The side-chain alkylation of toluene with methanol was studied on cesium-modified zeolite X prepared by ion-exchange and impregnation with different cesium precursors. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, X-ray fluorescence spectroscopy, Ar physical adsorption-desorption, NH3 temperature-programmed desorption (TPD), CO2-TPD, thermogravimetric/differential thermal analysis, ultraviolet-Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy. Cesium hydroxide was found to be the most effective precursor for modifying zeolite X. Cesium ions bonded on the framework and cesium oxide formed in the pore were found to take different roles in this reaction. Cesium ions could adsorb and activate toluene or modify the basicity of framework oxygen, whereas cesium oxide could ensure the effective conversion of methanol to formaldehyde and inhibit the process of coke deposition. A possible reaction pathway for this reaction over cesium-modified samples was described. The synergistic effect of cesium ions and cesium oxide was proven to be important for the formation of styrene and ethylbenzene.",
author = "He Han and Min Liu and Fanshu Ding and Yiren Wang and Xinwen Guo and Chunshan Song",
year = "2016",
month = "2",
day = "24",
doi = "10.1021/acs.iecr.5b04174",
language = "English (US)",
volume = "55",
pages = "1849--1858",
journal = "Industrial and Engineering Chemistry Research",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "7",

}

Effects of Cesium Ions and Cesium Oxide in Side-Chain Alkylation of Toluene with Methanol over Cesium-Modified Zeolite X. / Han, He; Liu, Min; Ding, Fanshu; Wang, Yiren; Guo, Xinwen; Song, Chunshan.

In: Industrial and Engineering Chemistry Research, Vol. 55, No. 7, 24.02.2016, p. 1849-1858.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of Cesium Ions and Cesium Oxide in Side-Chain Alkylation of Toluene with Methanol over Cesium-Modified Zeolite X

AU - Han, He

AU - Liu, Min

AU - Ding, Fanshu

AU - Wang, Yiren

AU - Guo, Xinwen

AU - Song, Chunshan

PY - 2016/2/24

Y1 - 2016/2/24

N2 - The side-chain alkylation of toluene with methanol was studied on cesium-modified zeolite X prepared by ion-exchange and impregnation with different cesium precursors. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, X-ray fluorescence spectroscopy, Ar physical adsorption-desorption, NH3 temperature-programmed desorption (TPD), CO2-TPD, thermogravimetric/differential thermal analysis, ultraviolet-Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy. Cesium hydroxide was found to be the most effective precursor for modifying zeolite X. Cesium ions bonded on the framework and cesium oxide formed in the pore were found to take different roles in this reaction. Cesium ions could adsorb and activate toluene or modify the basicity of framework oxygen, whereas cesium oxide could ensure the effective conversion of methanol to formaldehyde and inhibit the process of coke deposition. A possible reaction pathway for this reaction over cesium-modified samples was described. The synergistic effect of cesium ions and cesium oxide was proven to be important for the formation of styrene and ethylbenzene.

AB - The side-chain alkylation of toluene with methanol was studied on cesium-modified zeolite X prepared by ion-exchange and impregnation with different cesium precursors. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, X-ray fluorescence spectroscopy, Ar physical adsorption-desorption, NH3 temperature-programmed desorption (TPD), CO2-TPD, thermogravimetric/differential thermal analysis, ultraviolet-Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy. Cesium hydroxide was found to be the most effective precursor for modifying zeolite X. Cesium ions bonded on the framework and cesium oxide formed in the pore were found to take different roles in this reaction. Cesium ions could adsorb and activate toluene or modify the basicity of framework oxygen, whereas cesium oxide could ensure the effective conversion of methanol to formaldehyde and inhibit the process of coke deposition. A possible reaction pathway for this reaction over cesium-modified samples was described. The synergistic effect of cesium ions and cesium oxide was proven to be important for the formation of styrene and ethylbenzene.

UR - http://www.scopus.com/inward/record.url?scp=84959331348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959331348&partnerID=8YFLogxK

U2 - 10.1021/acs.iecr.5b04174

DO - 10.1021/acs.iecr.5b04174

M3 - Article

AN - SCOPUS:84959331348

VL - 55

SP - 1849

EP - 1858

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 7

ER -