Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl2O4

Guo Qing Ren; Guang Xian Pei; Yu Jing Ren; Kai Peng Liu; Zhi Qiang Chen; Jing Yi Yang; Yang Su; Xiao Yan Liu; Wei Zhen Li; Tao Zhang

doi:10.1016/j.jcat.2018.08.001

Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl₂O₄

Guo Qing Ren, Guang Xian Pei, Yu Jing Ren, Kai Peng Liu, Zhi Qiang Chen, Jing Yi Yang, Yang Su, Xiao Yan Liu, Wei Zhen Li, Tao Zhang

Research output: Contribution to journal › Article › peer-review

81 Scopus citations

Abstract

Anti-sintering platinum-based catalyst for propane dehydrogenation (PDH) is promising to avoid corrosive oxychlorination re-dispersion of sintered Pt during coke combustion. Herein, we report an anti-sintering Pt/MgAl₂O₄ catalyst and optimizations on its activity for PDH with group IB metals (Cu, Ag and Au). Using a suite of characterizations including BET, H₂ chemisorption, XRD, STEM, CO-DRIFTs, XANES, XPS, TG/DTA, TPO, C₃H₆-TPD and TPSR of C₃H₆ with H₂, we reveal that Cu and Ag dilute the surface Pt atoms and donate electron to Pt while the case for Pt-Au is inverse. As a result, significant enhancements in propane conversion and propylene selectivity were obtained on the Pt-Cu/MgAl₂O₄ and Pt-Ag/MgAl₂O₄ catalysts. The Pt-Cu/MgAl₂O₄ exhibited excellent C₃H₆ yield and regeneration stability, presumably due to the formation of intermetallic compounds and little phase segregation during cyclic dehydrogenation-regeneration runs.

Original language	English
Pages (from-to)	115-126
Number of pages	12
Journal	Journal of Catalysis
Volume	366
DOIs	https://doi.org/10.1016/j.jcat.2018.08.001
State	Published - Oct 2018
Externally published	Yes

Keywords

Anti-sintering
Propane dehydrogenation
Propylene
Pt catalyst
Regeneration stability

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10.1016/j.jcat.2018.08.001

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@article{4511cb2a3b8a46a594861a6a2dd7aef9,

title = "Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl2O4 ",

abstract = "Anti-sintering platinum-based catalyst for propane dehydrogenation (PDH) is promising to avoid corrosive oxychlorination re-dispersion of sintered Pt during coke combustion. Herein, we report an anti-sintering Pt/MgAl2O4 catalyst and optimizations on its activity for PDH with group IB metals (Cu, Ag and Au). Using a suite of characterizations including BET, H2 chemisorption, XRD, STEM, CO-DRIFTs, XANES, XPS, TG/DTA, TPO, C3H6-TPD and TPSR of C3H6 with H2, we reveal that Cu and Ag dilute the surface Pt atoms and donate electron to Pt while the case for Pt-Au is inverse. As a result, significant enhancements in propane conversion and propylene selectivity were obtained on the Pt-Cu/MgAl2O4 and Pt-Ag/MgAl2O4 catalysts. The Pt-Cu/MgAl2O4 exhibited excellent C3H6 yield and regeneration stability, presumably due to the formation of intermetallic compounds and little phase segregation during cyclic dehydrogenation-regeneration runs.",

keywords = "Anti-sintering, Propane dehydrogenation, Propylene, Pt catalyst, Regeneration stability",

author = "Ren, {Guo Qing} and Pei, {Guang Xian} and Ren, {Yu Jing} and Liu, {Kai Peng} and Chen, {Zhi Qiang} and Yang, {Jing Yi} and Yang Su and Liu, {Xiao Yan} and Li, {Wei Zhen} and Tao Zhang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",

year = "2018",

month = oct,

doi = "10.1016/j.jcat.2018.08.001",

language = "英语",

volume = "366",

pages = "115--126",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl2O4

AU - Ren, Guo Qing

AU - Pei, Guang Xian

AU - Ren, Yu Jing

AU - Liu, Kai Peng

AU - Chen, Zhi Qiang

AU - Yang, Jing Yi

AU - Su, Yang

AU - Liu, Xiao Yan

AU - Li, Wei Zhen

AU - Zhang, Tao

PY - 2018/10

Y1 - 2018/10

N2 - Anti-sintering platinum-based catalyst for propane dehydrogenation (PDH) is promising to avoid corrosive oxychlorination re-dispersion of sintered Pt during coke combustion. Herein, we report an anti-sintering Pt/MgAl2O4 catalyst and optimizations on its activity for PDH with group IB metals (Cu, Ag and Au). Using a suite of characterizations including BET, H2 chemisorption, XRD, STEM, CO-DRIFTs, XANES, XPS, TG/DTA, TPO, C3H6-TPD and TPSR of C3H6 with H2, we reveal that Cu and Ag dilute the surface Pt atoms and donate electron to Pt while the case for Pt-Au is inverse. As a result, significant enhancements in propane conversion and propylene selectivity were obtained on the Pt-Cu/MgAl2O4 and Pt-Ag/MgAl2O4 catalysts. The Pt-Cu/MgAl2O4 exhibited excellent C3H6 yield and regeneration stability, presumably due to the formation of intermetallic compounds and little phase segregation during cyclic dehydrogenation-regeneration runs.

AB - Anti-sintering platinum-based catalyst for propane dehydrogenation (PDH) is promising to avoid corrosive oxychlorination re-dispersion of sintered Pt during coke combustion. Herein, we report an anti-sintering Pt/MgAl2O4 catalyst and optimizations on its activity for PDH with group IB metals (Cu, Ag and Au). Using a suite of characterizations including BET, H2 chemisorption, XRD, STEM, CO-DRIFTs, XANES, XPS, TG/DTA, TPO, C3H6-TPD and TPSR of C3H6 with H2, we reveal that Cu and Ag dilute the surface Pt atoms and donate electron to Pt while the case for Pt-Au is inverse. As a result, significant enhancements in propane conversion and propylene selectivity were obtained on the Pt-Cu/MgAl2O4 and Pt-Ag/MgAl2O4 catalysts. The Pt-Cu/MgAl2O4 exhibited excellent C3H6 yield and regeneration stability, presumably due to the formation of intermetallic compounds and little phase segregation during cyclic dehydrogenation-regeneration runs.

KW - Anti-sintering

KW - Propane dehydrogenation

KW - Propylene

KW - Pt catalyst

KW - Regeneration stability

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U2 - 10.1016/j.jcat.2018.08.001

DO - 10.1016/j.jcat.2018.08.001

M3 - 文章

AN - SCOPUS:85051664223

SN - 0021-9517

VL - 366

SP - 115

EP - 126

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl₂O₄

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Keywords

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