A kinetic study has been made of the thermal desorption of C5-C8 n-paraffins from CaA and MgA zeolites at temperatures from 250 to 400°C.
It has been established that a temperature of 370–400°C in the desorption zone is necessary for complete desorption of n-paraffins from these zeolites.
At temperatures of 370–400°C, the n-paraffins are 90% desorbed within 20 min; at temperatures above 400°C, partial decomposition of the paraffinic hydrocarbons is observed.
A decrease in the dynamic adsorption activity of CaA and MgA zeolites in the separation of n-paraffins has been observed during the operation of a continuous pilot-plant unit; it has been shown that the working activity of the CaA zeolite is 80% and that of the MgA zeolite 85% of the respective initial activities.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 9. pp. 17–20, September, 1975.
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Kuliev, A.M., Bagirov, R.A., Nabiev, N.I. et al. Kinetics of desorption of normal paraffinic hydrocarbons on CaA and MgA zeolites. Chem Technol Fuels Oils 11, 683–686 (1975). https://doi.org/10.1007/BF00730312
- Kinetic Study
- Initial Activity
- Thermal Desorption