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Distribution of Cu Ions in Lanthanum-Modified CuHY Zeolite and Its Influence on Adsorption Desulfurization Performance
Fan Minguang1; Li Bin1; Mang Feiyue1; Fang Jinlong1; Li Wangliang2; Xing Jianmin2; Liu Zili1; Fan, MG
2009-10-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume30Issue:10Pages:1041-1048
AbstractThe Cu-loaded CuHY and CuLaHY zeolites were prepared by an incipient wetness method under nitrogen gas atmosphere. The samples were characterized by X-ray diffraction (XRD), N(2) adsorption, NH(3) temperature-programmed desorption, and X-ray photoelectron spectroscopy. The crystalline structure and the distribution of Cu(2+) cations in the cages of Y zeolite were determined by XRD. The adsorption desulfurization performance of the zeolites was investigated for model diesel containing dibenzothiophene (DBT). The results showed that most of Cu species from the precursor CuCl(2) was ion-exchanged with the HY and LaHY zeolites. For the La(3+)-modified CuHY zeolite (Cu-LaHY), the Cu(2+) cations entering the supercages of the zeolite coordinated with both skeleton-oxygen atoms and water molecules, and thus being firmly situated at the sites Sri and Sill in the supercages. For the CuHY zeolite, however, Cu(2+) cations entering the supercages were only near the sites S(II) and S(III) in the supercages. A very small percentage of CuCl molecules was highly scattered in the cages of the Y zeolite, with no definite position. The Cu(2+) cations at the sites S(II) and S(III) in the supercages adsorbed DBT molecules in the model diesel were the centers of adsorption desulfurization. The desulfurization capacity of the CuLaHY zeolite was better as compared with the CuHY zeolite. However, naphthalene molecules will result in competitive adsorption with DBT molecules if there are naphthalene molecules in the model diesel.
KeywordHy Zeolite Copper Lanthanum Adsorbent Modification Dibenzothiophene Adsorption Desulfurization
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
Language英语
WOS KeywordPI-COMPLEXATION ; TRANSPORTATION FUELS ; DEEP DESULFURIZATION ; GASOLINE ; TEMPERATURE ; DIBENZOTHIOPHENE ; ACIDITY ; SULFUR
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000271814400014
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6570
Collection生化工程国家重点实验室
Corresponding AuthorFan, MG
Affiliation1.Guangxi Univ, Coll Chem & Chem Engn, Nanning 530004, Guangxi, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Fan Minguang,Li Bin,Mang Feiyue,et al. Distribution of Cu Ions in Lanthanum-Modified CuHY Zeolite and Its Influence on Adsorption Desulfurization Performance[J]. CHINESE JOURNAL OF CATALYSIS,2009,30(10):1041-1048.
APA Fan Minguang.,Li Bin.,Mang Feiyue.,Fang Jinlong.,Li Wangliang.,...&Fan, MG.(2009).Distribution of Cu Ions in Lanthanum-Modified CuHY Zeolite and Its Influence on Adsorption Desulfurization Performance.CHINESE JOURNAL OF CATALYSIS,30(10),1041-1048.
MLA Fan Minguang,et al."Distribution of Cu Ions in Lanthanum-Modified CuHY Zeolite and Its Influence on Adsorption Desulfurization Performance".CHINESE JOURNAL OF CATALYSIS 30.10(2009):1041-1048.
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