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题名: Large-pore mesoporous SBA-15 silica particles with submicrometer size as stationary phases for high-speed CEC separation
作者: Tian, RJ;  Sun, JM;  Zhang, H;  Ye, ML;  Xie, CH;  Dong, J;  Hu, JW;  Ma, D;  Bao, XH;  Zou, HF
通讯作者: 邹汉法
关键词: capillary electrochromatography ;  high-speed separation ;  SBA-15 ;  stationary phases
刊名: ELECTROPHORESIS
发表日期: 2006-02-01
DOI: 10.1002/elps.200500630
卷: 27, 期:4, 页:742-748
收录类别: SCI
文章类型: Article
部门归属: 18,5
项目归属: 1809,502
产权排名: 1;1
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: A new mesoporous sphere-like SBA-15 silica was synthesized and evaluated in terms of its suitability as stationary phases for CEC. The unique and attractive properties of the silica particle are its submicrometer particle size of 400 nm and highly ordered cylindrical mesopores with uniform pore size of 12 nm running along the same direction. The bare silica particles with submicrometer size have been successfully employed for the normal-phase electrochromatographic separation of polar compounds with high efficiency (e.g., 210 000 for thiourea), which is matched well with its submicrometer particle size. The Van Deemeter plot showed the hindrance to mass transfer because of the existence of pore structure. The lowest plate height of 2.0 mu m was obtained at the linear velocity of 1.1 mm/s. On the other hand, because of the relatively high linear velocity (e.g., 4.0 mm/s) can be generated, high-speed separation of neutral compounds, anilines, and basic pharmaceuticals in CEC with C-18-modified SBA-15 silica as stationary phases was achieved within 36, 60, and 34 s, respectively.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  CAPILLARY ELECTROCHROMATOGRAPHY ;  BASIC COMPOUNDS ;  HPLC ;  COLUMN ;  SPHERES ;  PACKINGS ;  MCM-41
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000235794900004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93391
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatograph R&A Ctr, Dalian 116011, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116011, Peoples R China

Recommended Citation:
Tian, RJ,Sun, JM,Zhang, H,et al. Large-pore mesoporous SBA-15 silica particles with submicrometer size as stationary phases for high-speed CEC separation[J]. ELECTROPHORESIS,2006,27(4):742-748.
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