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Ultrafast synthesis of AFX-Type zeolite with enhanced activity in the selective catalytic reduction of NOx and hydrothermal stability.
Chokkalingam, Anand; Chaikittisilp, Watcharop; Iyoki, Kenta; Keoh, Sye Hoe; Yanaba, Yutaka; Yoshikawa, Takeshi; Kusamoto, Tetsuro; Okubo, Tatsuya; Wakihara, Toru.
Afiliación
  • Chokkalingam A; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
  • Chaikittisilp W; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
  • Iyoki K; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
  • Keoh SH; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
  • Yanaba Y; Institute of Industrial Science, The University of Tokyo Tokyo 153-8505 Japan.
  • Yoshikawa T; Institute of Industrial Science, The University of Tokyo Tokyo 153-8505 Japan.
  • Kusamoto T; Department of Chemistry, Graduate School of Science, The University of Tokyo Bunkyo-ku Tokyo 113-0033 Japan.
  • Okubo T; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
  • Wakihara T; Department of Chemical System Engineering, The University of Tokyo Tokyo 113-8656 Japan wakihara@chemsys.t.u-tokyo.ac.jp.
RSC Adv ; 9(29): 16790-16796, 2019 May 24.
Article en En | MEDLINE | ID: mdl-35516373
Shortening the synthesis time of SSZ-16 (AFX type) zeolite from several days to 2 h has been achieved using an ultrafast synthesis route involving N,N,N',N'-tetraethylbicyclo[2.2.2]oct-7-ene-2,3:5,6-dipyrrolidinium (TEBOP) as an organic structure-directing agent (OSDA) in a tubular reactor assisted by seed crystals. Recently, copper exchanged SSZ-16 has been looked upon as one of the few equivalents to SSZ-13 for the selective catalytic reduction of NOx with ammonia (NH3-SCR) from automobile exhausts. Hydrothermal stability is one of the crucial properties for any zeolites that compete for automobile applications. All the samples prepared were analyzed using sophisticated physio-chemical techniques and those prepared from TEBOP were subjected to SCR of NOx reactions. The rapid crystal growth induced by high synthesis temperature bestowed the ultrafast prepared SSZ-16 with high crystallinity and hydrothermal stability as well as enhanced SCR of NOx activity even when aged at 800 °C. Compared to 1,1'-(1,4-butanediyl)bis-4-aza-1-azoniabicyclo[2.2.2]octane dibromide (DABCO), TEBOP was found to be desirable as an OSDA for high crystallinity and hydrothermal stability.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2019 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2019 Tipo del documento: Article Pais de publicación: Reino Unido