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- W2067747370 abstract "Pyrolysis of cis-butene-2 under conditions of very low pressure (VLPP) has been studied in the range of 1100–1300°K. The principal products are butadiene and H2, obtained in a unimolecular reaction. A competing reaction to form butene-l accounts for from 10% to 40% of the overall decomposition over the range. Using a «tight» model for the transition state and RRKM theory yields a high-pressure, unimolecular rate constant for the 1,4-H2 elimination of where θ = 2.303RT in kcal/mol. There is some surface reaction of butadiene at these temperatures to yield H2 + nonvolatile residue. Butene-l proceeds to decompose irreversibly to allyl + methyl radicals which have been observed directly. Comparison with related reactions leads to the conclusion that orbital symmetry-forbidden, 1,2-H2 elimination from saturated organic compounds will have activation energies too high to observe." @default.
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- W2067747370 date "1973-11-01" @default.
- W2067747370 modified "2023-10-16" @default.
- W2067747370 title "The very low-pressure dehydrogenation ofcis-2-butene. The activation energy for 1,4-H2 elimination" @default.
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- W2067747370 doi "https://doi.org/10.1002/kin.550050608" @default.
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