SBA-15-supported iron phosphate catalyst for partial oxidation of methane to formaldehyde

Ye Wang, Xiaoxing Wang, Zheng Su, Qian Guo, Qinghu Tang, Qinghong Zhang, Huilin Wan

Research output: Contribution to journalConference article

59 Citations (Scopus)

Abstract

SBA-15-supported iron phosphate (FePO4) has been characterized with XRD, TEM, Raman spectroscopy and H2-TPR, and studied for the partial oxidation of CH4 with O2. The characterizations suggest that the FePO4 species with loading amount lower than 40wt.% are encapsulated within the mesoporous channels of SBA-15, and these species possibly exist as small FePO4 clusters with the local coordination environment of iron being similar to that in the crystalline FePO4. However, these encapsulated FePO4 clusters could be reduced at remarkably lower temperatures than the crystalline FePO4. The SBA-15-supported FePO4 catalysts exhibit higher CH4 conversion and HCHO selectivity than the unsupported and the MCM-41-supported ones in the partial oxidation of CH4 with O2. The catalyst with a loading amount of 5wt.% shows the highest HCHO selectivity at a given CH4 conversion and the highest HCHO formation rate based on the amount of FePO4 in the catalyst. It is likely that the improved catalytic performances of the SBA-15-supported samples are related to the enhanced redox properties of FePO4 species, the large porous diameter and the high inertness of SBA-15.

Original languageEnglish (US)
Pages (from-to)155-161
Number of pages7
JournalCatalysis Today
Volume93-95
DOIs
StatePublished - Sep 1 2004
EventSelections from the Presentations of the 3rd Asia-Pacific Congress - Dalian, China
Duration: Oct 12 2003Oct 12 2003

Fingerprint

Methane
Formaldehyde
Phosphates
Iron
Crystalline materials
Oxidation
Catalysts
Multicarrier modulation
Catalyst supports
Raman spectroscopy
Transmission electron microscopy
Temperature
ferric phosphate
SBA-15
Oxidation-Reduction

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Wang, Ye ; Wang, Xiaoxing ; Su, Zheng ; Guo, Qian ; Tang, Qinghu ; Zhang, Qinghong ; Wan, Huilin. / SBA-15-supported iron phosphate catalyst for partial oxidation of methane to formaldehyde. In: Catalysis Today. 2004 ; Vol. 93-95. pp. 155-161.
@article{d733d294f8554fc4bb49c043906e2d20,
title = "SBA-15-supported iron phosphate catalyst for partial oxidation of methane to formaldehyde",
abstract = "SBA-15-supported iron phosphate (FePO4) has been characterized with XRD, TEM, Raman spectroscopy and H2-TPR, and studied for the partial oxidation of CH4 with O2. The characterizations suggest that the FePO4 species with loading amount lower than 40wt.{\%} are encapsulated within the mesoporous channels of SBA-15, and these species possibly exist as small FePO4 clusters with the local coordination environment of iron being similar to that in the crystalline FePO4. However, these encapsulated FePO4 clusters could be reduced at remarkably lower temperatures than the crystalline FePO4. The SBA-15-supported FePO4 catalysts exhibit higher CH4 conversion and HCHO selectivity than the unsupported and the MCM-41-supported ones in the partial oxidation of CH4 with O2. The catalyst with a loading amount of 5wt.{\%} shows the highest HCHO selectivity at a given CH4 conversion and the highest HCHO formation rate based on the amount of FePO4 in the catalyst. It is likely that the improved catalytic performances of the SBA-15-supported samples are related to the enhanced redox properties of FePO4 species, the large porous diameter and the high inertness of SBA-15.",
author = "Ye Wang and Xiaoxing Wang and Zheng Su and Qian Guo and Qinghu Tang and Qinghong Zhang and Huilin Wan",
year = "2004",
month = "9",
day = "1",
doi = "10.1016/j.cattod.2004.06.037",
language = "English (US)",
volume = "93-95",
pages = "155--161",
journal = "Catalysis Today",
issn = "0920-5861",
publisher = "Elsevier",

}

SBA-15-supported iron phosphate catalyst for partial oxidation of methane to formaldehyde. / Wang, Ye; Wang, Xiaoxing; Su, Zheng; Guo, Qian; Tang, Qinghu; Zhang, Qinghong; Wan, Huilin.

In: Catalysis Today, Vol. 93-95, 01.09.2004, p. 155-161.

Research output: Contribution to journalConference article

TY - JOUR

T1 - SBA-15-supported iron phosphate catalyst for partial oxidation of methane to formaldehyde

AU - Wang, Ye

AU - Wang, Xiaoxing

AU - Su, Zheng

AU - Guo, Qian

AU - Tang, Qinghu

AU - Zhang, Qinghong

AU - Wan, Huilin

PY - 2004/9/1

Y1 - 2004/9/1

N2 - SBA-15-supported iron phosphate (FePO4) has been characterized with XRD, TEM, Raman spectroscopy and H2-TPR, and studied for the partial oxidation of CH4 with O2. The characterizations suggest that the FePO4 species with loading amount lower than 40wt.% are encapsulated within the mesoporous channels of SBA-15, and these species possibly exist as small FePO4 clusters with the local coordination environment of iron being similar to that in the crystalline FePO4. However, these encapsulated FePO4 clusters could be reduced at remarkably lower temperatures than the crystalline FePO4. The SBA-15-supported FePO4 catalysts exhibit higher CH4 conversion and HCHO selectivity than the unsupported and the MCM-41-supported ones in the partial oxidation of CH4 with O2. The catalyst with a loading amount of 5wt.% shows the highest HCHO selectivity at a given CH4 conversion and the highest HCHO formation rate based on the amount of FePO4 in the catalyst. It is likely that the improved catalytic performances of the SBA-15-supported samples are related to the enhanced redox properties of FePO4 species, the large porous diameter and the high inertness of SBA-15.

AB - SBA-15-supported iron phosphate (FePO4) has been characterized with XRD, TEM, Raman spectroscopy and H2-TPR, and studied for the partial oxidation of CH4 with O2. The characterizations suggest that the FePO4 species with loading amount lower than 40wt.% are encapsulated within the mesoporous channels of SBA-15, and these species possibly exist as small FePO4 clusters with the local coordination environment of iron being similar to that in the crystalline FePO4. However, these encapsulated FePO4 clusters could be reduced at remarkably lower temperatures than the crystalline FePO4. The SBA-15-supported FePO4 catalysts exhibit higher CH4 conversion and HCHO selectivity than the unsupported and the MCM-41-supported ones in the partial oxidation of CH4 with O2. The catalyst with a loading amount of 5wt.% shows the highest HCHO selectivity at a given CH4 conversion and the highest HCHO formation rate based on the amount of FePO4 in the catalyst. It is likely that the improved catalytic performances of the SBA-15-supported samples are related to the enhanced redox properties of FePO4 species, the large porous diameter and the high inertness of SBA-15.

UR - http://www.scopus.com/inward/record.url?scp=4344714596&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4344714596&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2004.06.037

DO - 10.1016/j.cattod.2004.06.037

M3 - Conference article

AN - SCOPUS:4344714596

VL - 93-95

SP - 155

EP - 161

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

ER -