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The reactions of n-butane and an n-butane (80 mol.%)—isobutane (20 mol.%) mixture with but-2-enes in the presence of polycationic PdLaCaX faujasites were studied. Quantum-chemical calculation of the enthalpies of formation of alkanes C4—C8 and their cations showed that the reaction [Bnn]+ [Bui]+ is of crucial importance for the isomeric composition of the products of alkane alkylation. The general scheme of transformations of the hydrocarbons in the alkylation of n- and iso-paraffins was proposed based on the experimental data on the distribution of the C8 isomers in the catalyzate at different temperatures and duration of the reaction.  相似文献   
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