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Journal of Materials Science

, Volume 54, Issue 6, pp 4573–4578 | Cite as

Accelerated synthesis of zeolites via radicalized seeds

  • Peng ChengEmail author
  • Manxi Song
  • Hongdan ZhangEmail author
  • Yang Xuan
  • Chunyang Wu
Chemical routes to materials
  • 130 Downloads

Abstract

By means of milling and heating, the zeolite crystals can be radicalized forming surface non-bridging oxygen hole center (NBOHC, ≡Si–O·). The corresponding g values of 2.0043 and 2.0048 unambiguously confirm the existence of the ≡Si–O· radicals in the milled and heated crystals via electron paramagnetic resonance. The active ≡Si–O· radicals can react with water to form hydroxyl free radicals to accelerate the crystallization of zeolite along with seeds. Radicalized crystals are used as seeds that show obvious accelerating effect in the crystallization of Na-A and nanosized silicalite-1 than the non-radicalized seeds. At the same crystallization time, solid products with much better crystallinity and more yields could be obtained using radicalized seeds compared with non-radicalized seeds. A new seeding-synthesis-related strategy is developed to accelerate the crystallization of zeolites.

Notes

Acknowledgements

We appreciate Prof. Jihong Yu and Wenfu Yan in Jilin University for helpful discussions. This work was supported by the National Natural Science Foundation of China (Grant No. 21701117), the Natural Science Foundation of Liaoning Province (20180550062), and the Special Fund of Liaoning Provincial Universities’ Fundamental Scientific Research Projects (LZD201702, LQN201706).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10853_2018_3178_MOESM1_ESM.docx (2.9 mb)
Supplementary material 1 (DOCX 3005 kb)

References

  1. 1.
    Cejka J, Corma A, Zones S (2010) Zeolites and catalysis: synthesis, reactions and applications. Wiley-VCH, WeinheimCrossRefGoogle Scholar
  2. 2.
    Kulprathipanja S (2010) Zeolites in industrial separation and catalysis. Wiley-VCH, WeinheimCrossRefGoogle Scholar
  3. 3.
    Breck DW (1974) Zeolite molecular sieves. Wiley, New YorkGoogle Scholar
  4. 4.
    Xu RR, Pang WQ, Yu JH, Huo QS, Chen JS (2009) Chemistry of zeolites and related porous materials: synthesis and structure. Wiley, HobokenGoogle Scholar
  5. 5.
    Li Y, Yu JH (2014) New stories of zeolite structures: their descriptions, determinations, predictions, and evaluations. Chem Rev 114:7268–7316CrossRefGoogle Scholar
  6. 6.
    Cundy CS, Cox PA (2005) The hydrothermal synthesis of zeolites: precursors, intermediates and reaction mechanism. Microporous Mesoporous Mater 82:1–78CrossRefGoogle Scholar
  7. 7.
    Chu P, Dwyer FG, Vartuli JC (1988) Crystallization method employing microwave radiation. US Patent 4 778 666Google Scholar
  8. 8.
    Iyoki K, Itabashi K, Okubo T (2014) Progress in seed-assisted synthesis of zeolites without using organic structure-directing agents. Microporous Mesoporous Mater 189:22–30CrossRefGoogle Scholar
  9. 9.
    Kerr GT (1966) Chemistry of crystalline aluminosilicates. I. Factors affecting the formation of zeolite A. J Phys Chem 70:1047–1050CrossRefGoogle Scholar
  10. 10.
    Feng GD, Cheng P, Yan WF, Boronat M, Li X, Su JH, Wang JY, Li Y, Corma A, Xu RR, Yu JH (2016) Accelerated crystallization of zeolites via hydroxyl free radicals. Science 351:1188–1191CrossRefGoogle Scholar
  11. 11.
    Cheng P, Feng GD, Sun C, Xu WJ, Su JH, Yan WF, Yu JH (2018) An efficient synthetic route to accelerate the zeolite synthesis via radicals. Inorg Chem Front 5:2106–2110CrossRefGoogle Scholar
  12. 12.
    Feng GD, Wang JY, Boronat M, Li Y, Su JH, Huang J, Ma Y, Yu JH (2018) Radical-facilitated green synthesis of highly ordered mesoporous silica materials. J Am Chem Soc 140:4770–4773CrossRefGoogle Scholar
  13. 13.
    Narayanasamy J, Kubicki JD (2005) Mechanism of hydroxyl radical generation from a silica surface: molecular orbital calculations. J Phys Chem B 109:21796–21807CrossRefGoogle Scholar
  14. 14.
    Schmidt P, Badou A, Frohlich F (2011) Detailed FT near-infrared study of the behaviour of water and hydroxyl in sedimentary length-fast chalcedony, SiO2, upon heat treatment. Spectrochim Acta A Mol Biomol Spectrosc 81:552–559CrossRefGoogle Scholar
  15. 15.
    Schrader R, Wissing R, Kubsch H (1969) Zur Oberflächenchemie von mechanisch aktiviertem Quarz. Z Anorg Allg Chem 365:191–198CrossRefGoogle Scholar
  16. 16.
    Hochstrasser G, Antonini J (1972) Surface states of pristine silica surfaces: I. ESR studies of Es′ dangling bonds and of CO2 adsorbed radicals. Surf Sci 32:644–664CrossRefGoogle Scholar
  17. 17.
    Watanabe T, Isobe T, Senna M (1996) Mechanisms of incipient chemical reaction between Ca(OH)2 and SiO2 under moderate mechanical stressing: II. Examination of a radical mechanism by an EPR study. J Solid State Chem 122:291–296CrossRefGoogle Scholar
  18. 18.
    Watanabe T, Hasegawa S, Wakiyama N, Usui F, Kusai A, Isobe T, Senna M (2002) Solid state radical recombination and charge transfer across the boundary between indomethacin and silica under mechanical stress. J Solid State Chem 164:27–33CrossRefGoogle Scholar
  19. 19.
    Inaki Y, Yoshida H, Yoshida T, Hattori T (2002) Active sites on mesoporous and amorphous silica materials and their photocatalytic activity: an investigation by FTIR, ESR, VUV–UV and photoluminescence spectroscopies. J Phys Chem B 106:9098–9106CrossRefGoogle Scholar
  20. 20.
    Zeleňák V, Zeleňáková A, Kováč J (2010) Insight into surface heterogenity of SBA-15 silica: oxygen related defects and magnetic properties. Colloids Surf Physicochem Eng Asp 357:97–104CrossRefGoogle Scholar
  21. 21.
    Li Q, Creaser D, Sterte J (1999) The nucleation period for TPA-silicalite-1 crystallization determined by a two-stage varying-temperature synthesis. Microporous Mesoporous Mater 31:141–150CrossRefGoogle Scholar
  22. 22.
    Nawrocki J (1997) The silanol group and its role in liquid chromatography. J Chromatogr A 779:29–71CrossRefGoogle Scholar
  23. 23.
    Tavazzi S, Ferraro L, Cozza F, Pastori V, Lecchi M, Farris S, Borghesi A (2014) Hydrogen peroxide mechanosynthesis in siloxane-hydrogel contact lenses. ACS Appl Mater Interfaces 6:19606–19612CrossRefGoogle Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyangChina

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