The effect of Fe on Pt particle states in Pt/KL catalysts

	The effect of Fe on Pt particle states in Pt/KL catalysts
	Song, Jie 1,2; Ma, Huaijun 1; Tian, Zhijian 1,3; Yan, Lijun 4; Xu, Zhusheng 1; Liu, Qianhe 1; Qu, Wei 1
刊名	applied catalysis a-general
	2015-02-25
卷号	492 页码:31-37
关键词	Fe-containing Pt/KL Pt states
英文摘要	two types of fe-containing pt/kl catalysts were prepared, characterized and examined using an n-hexane aromatization reaction. pt/fekl contained framework fe, which was incorporated through hydrothermal synthesis, while pt-fe/kl contained non-framework fe, which was introduced through impregnation. the differences between the framework and non-framework fe were examined using xrd, ft-ir and mossbauer spectroscopy. pt dispersion and reducibility as well as the electronic states of the fe and pt particles were detected using h-2-chemisorption, h-2-tpr and xps, respectively. with the non-framework fe, an electron-rich platinum species (pt delta-) formed after reduction. with the framework fe, an electron-deficient platinum species (pt delta+) was detected. the n-hexane aromatization results from adding 0.3 wt% non-framework fe include conversion after 3.5 h on stream at 450 degrees c, h-2/n-hexane =3.0 (mole ratio) and 3 h(-1) whsv over the pt-fe/kl, which was maintained at 77%; these values are greater than the 41% pt/kl and 25% pt/fekl. the pt-fe/kl benzene selectivity was 89%, which is also greater than the 83% pt/kl and 53% pt/fekl. we discuss the effect of fe on the pt particle states and the relationship between the pt states and catalyst activity. (c) 2014 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]	n-hexane aromatization ; kl zeolite ; dehydrocyclization activity ; isomorphous substitution ; supported platinum ; reforming catalyst ; sulfur-tolerance ; ltl framework ; vapor-phase ; iron
收录类别	SCI
语种	英语
WOS记录号	WOS:000350185600004
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145983]
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, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 4.PetroChina, Petrochem Res Inst, Beijing 100195, Peoples R China
推荐引用方式 GB/T 7714	Song, Jie,Ma, Huaijun,Tian, Zhijian,et al. The effect of Fe on Pt particle states in Pt/KL catalysts[J]. applied catalysis a-general,2015,492:31-37.
APA	Song, Jie.,Ma, Huaijun.,Tian, Zhijian.,Yan, Lijun.,Xu, Zhusheng.,...&Qu, Wei.(2015).The effect of Fe on Pt particle states in Pt/KL catalysts.applied catalysis a-general,492,31-37.
MLA	Song, Jie,et al."The effect of Fe on Pt particle states in Pt/KL catalysts".applied catalysis a-general 492(2015):31-37.