Conclusions
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1.
The principles of the change in the heats of adsorption (Q) and specific retainable volumes (Vg) of benzene as a function of the content of Na+, Ca2+, and Nd3+ cations in type X zeolites were studied.
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2.
The values of Q and log Vg for NdNaX and NdCaNaX depend on the conditions of heat treatment of the zeolites, which is due to reverse migration of Nd3+ ions between the large and small cavities of the crystal structure of the faujasite.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 285–289, February, 1974.
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Minachev, K.M., Mirzabekova, N.V., Bogomolov, V.I. et al. Investigation of the adsorption of benzene on Ca-, Nd-, and mixed Ca-Nd-forms of type X zeolite by a chromatographic method. Russ Chem Bull 23, 257–260 (1974). https://doi.org/10.1007/BF00924664
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DOI: https://doi.org/10.1007/BF00924664