Castor oil is a vegetable oil and its derivatives used for the value-added chemical. Castor oil methyl ester was used as a feedstock for catalytic cracking in a micro fixed-bed reactor to produce the desired products heptaldehyde and methyl undecenoate. The catalyst, reaction time, raw material flow rate, preheating temperature, and reaction temperature are among the reaction parameters. The best catalytic efficiency was observed in HZSM-5, and the optimal reaction temperature was determined to be 823 K. The maximum yields of methyl undecenoate and heptaldehyde are 52 wt.% and 31 wt.%, respectively, when the reaction is carried out under optimum conditions of 2 hours, 623 K preheating temperature, 823 K reaction temperature, respectively. The reaction generated gas, liquid, and solid products, which were examined using GC and GC-MS. At optimum reaction conditions, the yield of the product was 9 wt.%, 89 wt.%, and 0.1 wt.% for gas, liquid, and solid, respectively, with a margin of error of 1.9 wt.%. The HZSM-5 catalyst was characterized analytically using XRD, FE-SEM, FT-IR, NH<sub>3</sub>-TPD, and N<sub>2</sub> adsorption and desorption.

Green process to produce heptaldehyde and methyl undecenoate by using catalytic cracking of castor oil methyl ester

ACS Fall 2021

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