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Infrared spectra of catalysts and adsorbed molecules

Communication 18. Investigation of the structure of calcium aluminates

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    The IR spectra of a number of calcium aluminates (CA, CA2, and C12A7) and adsorbents (galumins) produced on the basis of them, with various values of the specific surface from 30 to 400 m2/g in the interval 4000-400 cm−1, were studied.

  2. 2.

    The absorption bands in the region of 550–650 cm−1 characterize the chain vibrations of the Al tetrahedra in the, framework zeolite-like structure.

  3. 3.

    Depending on the method of production, value of the specific surface, and CaO cong cntent, the galumins studied can be divided into two groups: with a framework structure (containialcium aluminates) and consisting of aluminum oxide.

  4. 4.

    Water exists in various forms in galumins: in the molecular-adsorption form and in the form of OH groups of the surface, in Ca(OH)2, Al(OH)3, and calcium hydroaluminates.

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Authors and Affiliations

  1. N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, USSR

    L. I. Lafer, E. Z. Golosman & V. I. Yakerson

Authors
  1. L. I. Lafer
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  2. E. Z. Golosman
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  3. V. I. Yakerson
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2696–2700, December, 1973.

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Lafer, L.I., Golosman, E.Z. & Yakerson, V.I. Infrared spectra of catalysts and adsorbed molecules. Russ Chem Bull 22, 2631–2635 (1973). https://doi.org/10.1007/BF00926125

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  • DOI: https://doi.org/10.1007/BF00926125

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