DICP OpenIR
Metals modification of the paraffin dehydrogenation catalyst regenerated by coke combustion
He, Songbo1,3; Li, Jingqiu1; Wang, Bin2; Dai, Xihai2; Sun, Chenglin1; Bai, Ziwu2; Guo, Qi2; Seshan, K.3
KeywordDehydrogenation Pt Regeneration Combustion Modification
Source PublicationAPPLIED CATALYSIS A-GENERAL
2016-03-05
ISSN0926-860X
DOI10.1016/j.apcata.2015.12.027
Volume513Pages:82-88
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordN-DODECANE ; DEPOSITS ; KINETICS ; OLEFINS ; PHASE
AbstractThe industrially deactivated Pt-0.5-Sn-1.5-K-0.5-Mg-1/gamma-Al2O3 catalyst for dehydrogenation of long chain paraffins (n-C-10 degrees-C-(13 degrees)) was regenerated by coke burn off and metals (Pt, Sn and K) modification. The catalysts were characterized by TG, BET, CO-chemisorption, H-2-TPR, XRD and mechanical crushing strength test. Paraffin dehydrogenation was performed on a bench reactor at the industrial site. Results showed that temperature increase during coke combustion can be effectively controlled with O-2 content lower than 1%. The combustion temperature should be higher than 500 degrees C to burn all the coke and lower than 550 degrees C to avoid Pt sintering. Under optimal conditions, coke combustion results only in 92% recovery of catalyst activity. Subsequent metals modification with additional 0.01 wt.% Pt addition can recover catalytic performance completely, paraffin conversion and olefin selectivity to the levels of fresh catalyst. The modified catalyst has longer life-time of 77 days compared to fresh catalyst of 69 days. Results are explained in terms of the characteristics of the catalysts. (C) 2015 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000373408600008
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/170703
Collection中国科学院大连化学物理研究所
Corresponding AuthorHe, Songbo; Sun, Chenglin
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.PetroChina Fushun Petrochem Co, Fushun 113001, Liaoning, Peoples R China
3.Univ Twente, MESA Inst Nanotechnol, Catalyt Proc & Mat, NL-7500 AE Enschede, Netherlands
Recommended Citation
GB/T 7714
He, Songbo,Li, Jingqiu,Wang, Bin,et al. Metals modification of the paraffin dehydrogenation catalyst regenerated by coke combustion[J]. APPLIED CATALYSIS A-GENERAL,2016,513:82-88.
APA He, Songbo.,Li, Jingqiu.,Wang, Bin.,Dai, Xihai.,Sun, Chenglin.,...&Seshan, K..(2016).Metals modification of the paraffin dehydrogenation catalyst regenerated by coke combustion.APPLIED CATALYSIS A-GENERAL,513,82-88.
MLA He, Songbo,et al."Metals modification of the paraffin dehydrogenation catalyst regenerated by coke combustion".APPLIED CATALYSIS A-GENERAL 513(2016):82-88.
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