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author:

Wang, Zhaoyu (Wang, Zhaoyu.) [1] | Huang, Lijuan (Huang, Lijuan.) [2] | Su, Bo (Su, Bo.) [3] | Xu, Junli (Xu, Junli.) [4] | Ding, Zhengxin (Ding, Zhengxin.) [5] | Wang, Sibo (Wang, Sibo.) [6] (Scholars:汪思波)

Indexed by:

EI Scopus SCIE

Abstract:

This work reports the preparation of a La2O3-modified Pt/TiO2 (Pt/La-TiO2) hybrid through an excess-solution impregnation method and its application for CO2 hydrogenation catalysis. The Pt/La-TiO2 catalyst is characterized by XRD, H-2 temperature-programmed reduction (TPR), TEM, X-ray photoelectron spectroscopy (XPS), Raman, EPR, and N-2 sorption measurements. The Pt/La-TiO2 composite starts to catalyze the CO2 conversion reaction at 220 degrees C, which is 30 degrees C lower than the Pt/TiO2 catalyst. The generation of CH4 and CO of Pt/La-TiO2 is 1.6 and 1.4 times greater than that of Pt/TiO2. The CO2 temperature-programmed desorption (TPD) analysis confirms the strengthened CO2 adsorption on Pt/La-TiO2. Moreover, the in situ FTIR experiments demonstrate that the enhanced CO2 adsorption of Pt/La-TiO2 facilitates the formation of the active Pt-CO intermediate and subsequently boosts the evolution of CH4 and CO. The cycling tests reveal that Pt/La-TiO2 shows reinforced stability for the CO2 hydrogenation reaction because the La species can prevent Pt nanoparticles (NPs) from sintering. This work may provide some guidance on the development new rare-metal-modified hybrid catalysts for CO2 fixation.

Keyword:

CO2 adsorption CO2 hydrogenation La2O3 Pt Pt-CO intermediates TiO2

Community:

  • [ 1 ] [Wang, Zhaoyu]Fujian Normal Univ, Fuqing Branch, Fujian Prov Key Lab Coastal Basin Environm, Fuqing 350300, Fujian, Peoples R China
  • [ 2 ] [Wang, Zhaoyu]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 3 ] [Huang, Lijuan]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 4 ] [Su, Bo]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 5 ] [Xu, Junli]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 6 ] [Ding, Zhengxin]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
  • [ 7 ] [Wang, Sibo]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • 丁正新 汪思波

    [Ding, Zhengxin]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China;;[Wang, Sibo]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

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Source :

CHEMISTRY-A EUROPEAN JOURNAL

ISSN: 0947-6539

Year: 2019

Issue: 2

Volume: 26

Page: 517-523

4 . 8 5 7

JCR@2019

3 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 15

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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