Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products

	Dehydrogenation of n-dodecane over Pt-Sn/Mg-Al-O catalysts: Investigating the catalyst performance while monitoring the products
	Lai, Yulong 1,2; He, Songbo 1; Li, Xianru 1,2; Sun, Chenglin 1; Seshan, K.3
刊名	applied catalysis a-general
	2014-01-17
卷号	469 页码:74-80
关键词	Dehydrogenation Long chain paraffin Pt-Sn Mg-Al-O oxide In situ TOF-MS
英文摘要	n-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.
WOS标题词	science & technology ; physical sciences ; life sciences & biomedicine
类目[WOS]	chemistry, physical ; environmental sciences
研究领域[WOS]	chemistry ; environmental sciences & ecology
关键词[WOS]	mal2o4 m-mg ; isobutane dehydrogenation ; butane dehydrogenation ; pt-sn/al2o3 catalysts ; metal precursors ; regeneration ; paraffins ; selectivity ; support ; lithium
收录类别	SCI
语种	英语
WOS记录号	WOS:000329266500008
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/143203]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.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
推荐引用方式 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.