Dehydration of aliphatic alcohols on phosphoric acid catalyst with the addition of calcium phosphate
The kinetic regularities of dehydration of sec- and tert-butyl alcohols on a catalyst consisting of a mixture of calcium phosphate and H/sub 3/PO/sub 4/, deposited on molten quartz were studied by pulsed gas chromatography. At an equal water vapor pressure in the system, the activity of a catalyst consisting of a pure H/sub 3/PO/sub 4/ is higher than that of a catalyst with the addition of a salt. The experimentally observed dehydration rate constants and those determined with the retention volumes taken into account were measured. Activation energies, rate constants, and the heat of dissolution of tert-butyl alcohol on calcium phosphate catalyst were determined in the range of 80-110/sup 0/C. The dehydration of sec-butyl alcohol was studied at 140/sup 0/C. It was found that in a liquid phase, the reaction rate constant is not very dependent on the salt/acid ratio.
- Research Organization:
- Academy of Sciences of the USSR, Moscow
- OSTI ID:
- 7043463
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 27:3, PT.2; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
BUTANOLS
CALCIUM COMPOUNDS
CALCIUM PHOSPHATES
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHROMATOGRAPHY
DEHYDRATION
ENERGY
ENTHALPY
GAS CHROMATOGRAPHY
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
KINETICS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORIC ACID
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
REACTION KINETICS
SEPARATION PROCESSES
SOLUTION HEAT
THERMODYNAMIC PROPERTIES