INFLUENCE OF TECHNOLOGICAL PARAMETERS ON THE CATALYTIC AND REGENERATION PROPERTIES OF CoHZSM-SO4 2- /ZrO2 COMPOSITE SYSTEM OF LOW-TEMPERATURE ISOMERIZATION OF STRAIGHT-RUN GASOLINES
Year: 2018
Type: article
Abstract: The composite catalyst of 10% ZrO 2 , 0.4% Co, 2% SO 4 2-/HZSM-5 designed for low-temperature conversion of straight-run gasoline (SRG) was synthesized.The influence of technological parameters (temperature, volumetric rate and ratio of hydrogen to initial raw material -H 2 /SRG) on catalytic and regeneration properties of the catalyst was investigated and optimal process conditions under which the conversion of C 8+ is 76.8%, and the sum of hydrocarbons C 5 -C 6 , consisting of 78.8% of high-octane isomers, rises from 11.0% to 61.1.2%,were established.Regenerative characteristics of the catalyst were studied.The stability of the work of the samples and the amount of carbon compounds were determined depending on the duration of the reaction, the temperature of preliminary reduction of the samples by hydrogen, and the introduced hydrogenolysis metals (Co, Ni).It found that rise in the regeneration temperature of a 10% ZrO 2 ,0.4% Co, 2% SO 4 2-/HZSM-5 sample from 380 to 500 0 C leads to the stability of the catalyst.Replacing of Co with Ni enhances the stability of the catalyst due to the decrease in the rate of accumulation of carbon deposits; however, the selectivity of the catalyst is reduced.
Source: Chemical Problems
Institution: Azerbaijan National Academy of Sciences
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2907804685