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Production of Biodiesel from Vegetable Oils by Esterification Method Using Calcium Oxide as Base Catalyst

Jalali Varnamkhasti, Roshanak | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55698 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Khorasheh, Farhad; Larimi, Afsaneh Sadat
  7. Abstract:
  8. The aim of this project is to fabricate and study heterogeneous CaO-based nanocatalysts with lithium and zinc enhancers for the esterification reaction of rapeseed oil and methanol to produce biodiesel as a renewable and alternative fuel for fossil fuels. Is. First, Zn-Li / CaO catalysts with weight ratio Li: Zn: CaO, 2: 2: 7 and by combining different percentages of Li100% promoter, Li75% -Zn25%, Li50% -Zn50%, Li25% -Zn75%, 100% Zn were made on the basis of CaO by wet inoculation. Characterization tests to evaluate the structure and characterization such as X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (EDX) spectroscopy, Bruner-Emmett-Teller surface area studies (BET) was performed on the catalysts. The influence of reaction conditions such as molar ratio of methanol to oil, weight percentage of catalyst used, temperature and reaction time were investigated. According to the results, the highest efficiency is related to the catalyst Li25% -Zn75% / CaO at the calcination temperature of 650 ° C and in the conditions of 5% by weight of the catalyst used, the molar ratio of methanol to oil is 14: 1, reaction time 3 hours and temperature The reaction at 60 ° C was 95.149%
  9. Keywords:
  10. Biodiesel ; Rapeseed Oil ; Heterogeneous Nanocatalyst ; Lithium ; ZINC ; Calcium Oxide ; Transesterification Reaction ; Biofuel

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