Isomerization of saturated hydrocarbons

Петров, А. С.; Sergienko, S. R.; Tsedlina, A. L.; Teterina, M. P.; Kislinskii, A. N.; Gal'pern, G. D.

doi:10.1007/bf00910928

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…The ability of montmorillonite to donate protons (its 'surface acidity') causes the protonation of organic compounds such as amines (Yariv and Heller, 1970) and catalyzes many organic reactions, such as: the polymerization of styrene (Vallet et al, 1972); the decomposition of the diazoacetic-ester (Delvaux et al, 1964); the cracking and isomerization of hydrocarbons (Petrov, 1963) etc. A relationship has been established between the exchangeable cation and the ability of montmorillonite to donate protons to the adsorbed molecules (Russell et al, 1968;Mortland and Raman, 1968).…”

Section: Introductionmentioning

confidence: 99%

Surface Acidity of Montmorillonites

Frenkel

1974

Clays and clay miner.

120

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Abstract--Surface acidity of almost homoionic montmorillonites was measured by titrating selected Hammett indicators adsorbed on the clay with n-butylamine.As expected, the acidity is strongly affected by the exchangeable cations and the degree of hydration of the clay. Greater polarizing ability of the interlayer cations increases both the strength and number of acid sites per H 0 value. The acidity of 'activated' or heated H-montmorillonite does not exceed that of untreated H-montmorillonite. The origin of the negative charge in the montmorillonite appears to affect the acidity of the clay.It is concluded that the very high acidities reported in the literature (Ho < -5-6) are apparent only and are due to physisorption of the indicator.

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Section: Introductionmentioning

confidence: 99%

Surface Acidity of Montmorillonites

Frenkel

1974

Clays and clay miner.

120

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“…On platinumalumina catalysts at temperatures above 350°the reaction is more complex, and gives methane and aromatic hydrocarbons (47,116,138). Ring cleavage also occurs on passing a cyclopentane-cyclohexane mixture in an inert gas over platinum-charcoal at 300°( 67), the cyclohexane being dehydrogenated.…”

Section: Ringsmentioning

confidence: 99%