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Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products
Lai, Yulong1,2; He, Songbo1; Li, Xianru1,2; Sun, Chenglin1; Seshan, K.3
KeywordDehydrogenation Long Chain Paraffin Pt-sn Mg-al-o Oxide In Situ Tof-ms
Source PublicationAPPLIED CATALYSIS A-GENERAL
2014-01-17
DOI10.1016/j.apcata.2013.09.042
Volume469Pages:74-80
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordMAL2O4 M-MG ; ISOBUTANE DEHYDROGENATION ; BUTANE DEHYDROGENATION ; PT-SN/AL2O3 CATALYSTS ; METAL PRECURSORS ; REGENERATION ; PARAFFINS ; SELECTIVITY ; SUPPORT ; LITHIUM
Abstractn-Dodecane was dehydrogenated over Pt-Sn/Mg-Al-O catalysts. Al2O3 and Mg Al-O supports with different Mg/AI mole ratio were prepared using a chemical co-precipitation method. The supports and supported Pt Sn catalysts were characterized using BET, XRD, CO-chemisorption, NH3-TPD, and TG. The dehydrogenation products were analyzed by GC. A single photon ionization time-of-flight mass spectrometer (SPI-TOF-MS) was developed and used to monitor the dehydrogenation products on-line during continuous reactions. Adding Mg to the supports decreased the specific surface area, increased the pore volume and diameter, moderated the acidity, and changed the strong acidic sites to weak ones. The dehydrogenation activity of the catalysts was inhibited, while the mono-olefin selectivity and yield were enhanced by Mg addition. Using a 1/3 Mg/A1 molar ratio generated the optimal n-dodecene yield over the Pt Sn/Mg Al-O catalysts. The TOF-MS was reliable for detecting the dehydrogenation products of the long-chain paraffins rapidly, continuously, and accurately. Interestingly, TOF-MS can be used to monitor the reactions on-line and in situ, providing analyses of the products during high temperature reactions. (C) 2013 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000329266500008
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143203
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
Recommended Citation
GB/T 7714
Lai, Yulong,He, Songbo,Li, Xianru,et al. Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products[J]. APPLIED CATALYSIS A-GENERAL,2014,469:74-80.
APA Lai, Yulong,He, Songbo,Li, Xianru,Sun, Chenglin,&Seshan, K..(2014).Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products.APPLIED CATALYSIS A-GENERAL,469,74-80.
MLA Lai, Yulong,et al."Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products".APPLIED CATALYSIS A-GENERAL 469(2014):74-80.
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