High benzene selectivity of mesoporous silicate for BTX gas sensing microfluidic devices

Yuko Ueno, Akiyuki Tate, Osamu Niwa, Hao Shen Zhou, Takeo Yamada, Itaru Honma

研究成果: Article

19 引用 (Scopus)

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The gas selectivities of highly ordered mesoporous silicates and commercially-obtained porous silicates with respect to benzene, toluene and xylene were studied. After studying the porosities, pore uniformities, and surface silanol structures of the silicates and their relationships to gas selectivity in detail, we found that we could achieve high benzene selectivity by controlling the micropore size (less than 1 nm). Concluding that mesoporous silicate has a suitable micropore size and structure for benzene selectivity, we also observed that mesoporous silicate SBA-16 exhibited a high (>6) benzene selectivity from toluene and xylene even in a pseudo-atmospheric environment. A benzene detection limit of about 100 ppb was achieved by introducing SBA-16 into a microfluidic device originally developed for the separate detection of benzene, toluene, and xylene gases.

元の言語English
ページ(範囲)804-809
ページ数6
ジャーナルAnalytical and Bioanalytical Chemistry
382
発行部数3
DOI
出版物ステータスPublished - 2005 6 1
外部発表Yes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry

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