Summary
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1.
A study has been made of the dehydration of alcohols in the presence of iron phosphate using cyclohexanol, hexanol-1, butanol-1, and propanol-2.
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2.
At 380°–400°, the yields of unsaturated products reach 95%, the activity of the contact remaining good even after having operated for a long time without regeneration.
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3.
The unsaturated products of the dehydration quickly isomerize, the degree of isomerization increasing with increase in temperature and with increase in the number of carbon atoms in the molecule.
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4.
From kinetic data, the apparent activation energy for the dehydration of propanol-2 has been calculated to be ɛ=21.5 kcal/M and for the isomerization of cyclohexane, ɛ=9.2 kcal/M.
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5.
A proposed mechanism is given for the contact transformations.
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Balandin, A.A., Kukina, A.I. & Malenberg, N.E. The catalytic properties of iron phosphate. Russ Chem Bull 11, 529–535 (1962). https://doi.org/10.1007/BF00904747
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DOI: https://doi.org/10.1007/BF00904747