1946
DOI: 10.1021/ja01208a005
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Abstract: Assuming the cross sectional area of the molecule to be about 20 sq. Á., then ab sin ß must be divided by four to give a value of 19.5 sq. Á. This unit cell, therefore, has eight molecules. Within a few tenths of an ángstróm, the calculated length of two fully extended molecules of hexanolamine oleate, based on analogous work on the saturated fatty acids, sodium soaps and sodium acid soaps, agrees with the value of c sin ß here reported. The value of sin ß is therefore close to unity. By analogy with the sodiu… Show more

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Cited by 45 publications
(25 citation statements)
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“…Their values range from 1 to 0.72 and follow the order VOP>AIVOP> MnVOP>GaVOP>CrVOP. Apart from CrVOP, which gives a cis/trans molar ratio of 0.72, the other values are far from thermodynamic equilibrium which, in our operating conditions (450~ should be 0.67 [23]. Furthermore, it is evident that while cis ~-9 trans geometric isomerization is in kinetic equilibrium, double bond migration is not because, as said above, the 2-butene formation continuously decreases.…”
Section: Catalytic Testsmentioning
confidence: 62%
“…Their values range from 1 to 0.72 and follow the order VOP>AIVOP> MnVOP>GaVOP>CrVOP. Apart from CrVOP, which gives a cis/trans molar ratio of 0.72, the other values are far from thermodynamic equilibrium which, in our operating conditions (450~ should be 0.67 [23]. Furthermore, it is evident that while cis ~-9 trans geometric isomerization is in kinetic equilibrium, double bond migration is not because, as said above, the 2-butene formation continuously decreases.…”
Section: Catalytic Testsmentioning
confidence: 62%
“…It was found tbat the best agreement with the experimental equilibrium data on the isomerization of the n-butenes [14,15,16] could be obtained with Vo=2,400 cal/mole. This comparison is presented in reference [17].…”
Section: To 12 X= Vo/2rt 1(x)=i-"j(ix) In(y) Is the Ordinary Bmentioning
confidence: 68%
“…Equations [I] and [2] failed to give an adequate fit of the 1-butene data as might be expected; eq. [3], although allowing for the shape of Fig. 4, also failed to give a good fit and; for eq.…”
Section: Modelling and Interpretatiorz Of Resultsmentioning
confidence: 97%
“…Catalytic isomerization of butenes exhibits a high degree of stereoselectivity mhich is dependent upon the catalyst (2)(3)(4)(5)(6)(7)(8)(9), temperature, and conversiois (6,11). Foster and CvetanoviC (6) show that alkaline catalysts favor double bond migration, whereas typically acidic catalysts favor cistrans isomerization.…”
mentioning
confidence: 99%