Articles


Document Type
Article
Title
Crucial support effect on the durability of Pt/MgAl2O4 for partial oxidation of methane to syngas
Author
Wang, Fen; Li, Wei-Zhen; Lin, Jing-Dong; Chen, Zhi-Qiang; Wang, Yong
Address
[Wang, Fen; Lin, Jing-Dong; Wang, Yong] Xiamen Univ, Collaborat Innovat Ctr Chem Energy Mat, Natl Engn Lab Green Chem Prod Alcohols Ethers Est, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China; [Wang, Fen; Li, Wei-Zhen; Chen, Zhi-Qiang] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China; [Wang, Yong] Washington State Univ, Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA
RPAddress
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China.
Email
ResearchID
ORCID
Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Publisher
ELSEVIER SCIENCE BV
ISSN
0926-3373
Published
2018-09-05, 231:292-298.
JCR
ImpactFactor
ISBN
Fund_Code
National Key R&D Program of China [2016YFA0202801]; National Natural Science Foundation of China [21403213, 91545114, 21376236]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17020100]; "Hundred Talents Programme" of the Chinese Academy of Sciences; Department of Science and Technology of Liaoning province [2015020086-101]
HYMC
HYDD
HYKSRQ
HYJSRQ
HYLWLB
HYJB
Keywords
CATALYTIC PARTIAL OXIDATION; SYNTHESIS GAS; NI/AL2O3 CATALYST; NANOPARTICLES; NI; MECHANISM; HYDROGEN; MGAL2O4; RH
Abstract
Catalyst durability is one of the major problems hindering the commercialization of partial oxidation of methane (POM) for syngas production. We report that a Pt/MgAl2O4-HS catalyst with the MgAl2O4-HS support being synthesized via hydrolysis solvothermal (HS) method demonstrates high stability for POM during a 500 h life testing at 900 degrees C without detectable coke formation, while a Pt/MgAl2O4-CP counterpart in which MgAl2O4 was prepared by an optimized co-precipitation (CP) method exhibits continuous deactivation accompanied by coking. Using a suite of characterizations lncluidng BET, H-2 chemisorption, XRD, STEM, TEM, TG/DTA and TPD of NH3 and CO2, we reveal that the high catalytic durability of the Pt/MgAl2O4-HS is due to the spinel surface of MgAl2O4 HS that can efficiently stabilize Pt against sintering. The Pt/MgAl2O4-CP, however, has defect Al2O3 or MgO-like species on the MgAl2O4-CP surface, inhibiting its capability to stabilize Pt. We confirm that the POM reaction undergoes a combustion-reforming pathway by monitoring the temperatures and gaseous product compositions along the catalyst bed. These results provide guidance for rational design of a longevity catalyst for POM process.
WOS Categories
Chemistry, Physical; Engineering, Environmental; Engineering, Chemical
Accession Number
WOS:000430762300031
EI收录号
20181705110377
DOI
10.1016/j.apcatb.2018.03.018
ESI_Type
CHEMISTRY
Collection
SCIE, EI

Back to List