On biodiesels from castor raw oil using catalytic pyrolysis

Abdelfattah, Mohamed S.; Abu-Elyazeed, Osayed Sayed Mohamed; mawla, Ebtsam Abd El; Abdelazeem, Marwa Ahmed

doi:10.1016/j.energy.2017.09.095

Cited by 53 publications

(41 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperature ranges between 290°C and 750°C depending on the method of pyrolysis used, whether it may be gasification, liquefaction, or carbonization. The temperature and residence time affect the product: the high temperature at longer time yields a gas, low temperature at a longer time produces charcoal, whereas the moderate temperature at a short time results in liquids . Castor oil undergoes pyrolysis at temperatures greater than 400°C, splitting ricinoleic fatty acid at the hydroxy group forming two products namely: heptaldehyde 5 and undecanoic acid 6, including some light gases and residue.…”

Section: Castor Oilmentioning

confidence: 99%

“…The molar ratio of the alcohol to oil has a major effect on the transesterification reaction, because if the alcohol is in too much excess then the equilibrium may be shifted thus favoring the reverse reaction and decreasing the yield of biodiesel. It is also very vital to select an optimum temperature in which a maximum yield can be achieved with less consumption of energy . Khiratkar et al studied the transesterification of castor oil using a benzimidazolium‐based Brønsted acid ionic liquid catalyst, the maximum yield of biodiesel was 96% at a 1:12 castor oil to methanol ratio, 40°C and 5 mol% catalyst loading at 14 hours.…”

Section: Castor Oilmentioning

confidence: 99%

See 1 more Smart Citation

Development of castor oil–based polymers: A review

Nekhavhambe

Mukaya

Nkazi

2019

J Adv Manuf & Process

View full text Add to dashboard Cite

Vegetable oils are a vital commodity in the industry because of the persisting challenges encountered with the utilization of fossil fuels, specifically petroleum. Petroleum-based polymers are a part of our day to day life, thus it is of importance to find sustainable ways to produce such indispensable commodities. Although various vegetable oils have been utilized to produce polymers, castor oil surpasses other vegetable oils, as it does not compete with the food industry as it is nonedible and as it is a natural polyol and has been used for polyurethane synthesis. Because of the versatility of castor oil chemistry, polymers such as epoxies, polyamides, and polyesters can be synthesized. The review focuses on the importance of castor oil toward the synthesis of various polymers and their versatile applications. K E Y W O R D Scastor oil, castor oil chemistry, epoxy nanocomposite, polyester, polyurethane

show abstract

Section: Castor Oilmentioning

confidence: 99%

Section: Castor Oilmentioning

confidence: 99%

Development of castor oil–based polymers: A review

Nekhavhambe

Mukaya

Nkazi

2019

J Adv Manuf & Process

View full text Add to dashboard Cite

show abstract

“…Molecular sieves have a combination of important properties, such as surface area, large ion exchange capacity, and strong acidity, with high thermal and hydrothermal stability. Due to the regularity of their crystalline channels, molecular sieves allow higher selectivity of the reagents, products, and transition states, on a molecular scale [13]. Catalysts based on molecular sieves with different crystalline structures can induce changes in the product distribution, in the conversion of bio-oils and triglycerides.…”

Section: Reactionmentioning

confidence: 99%

Thermal and Catalytic Pyrolysis of Dodecanoic Acid on SAPO-5 and Al-MCM-41 Catalysts

et al. 2019

View full text Add to dashboard Cite

In this study, dodecanoic acid was decomposed during fast pyrolysis experiments either thermally or in the presence of SAPO-5 and Al-MCM-41catalysts. The catalysts were synthesized by a hydrothermal route and subsequently characterized by XRD, TPD-NH3, and TGA, and dodecanoic acid was characterized by TGA and DSC. Analysis of the post-pyrolysis products was performed online by gas chromatography coupled with mass spectrometry (GC-MS). The results from pyrolysis at 650 °C indicated that the nature of the catalysts strongly influences the composition of the products. Linear alkenes were standard products for all pyrolysis experiments, but with Al-MCM-41, various alkene isomers with a linear and cyclic structure formed, as well as saturated and aromatic hydrocarbons. As a whole, Al-MCM-41 led to a much higher dodecanoic acid conversion and higher deoxygenation than SAPO-5. As these catalysts present small differences in strong acid site density, the difference in the global conversion of dodecanoic acid could be attributed to textural characteristics such as pore volume and surface area. In this case, the textural properties of the SAPO-5 are much lower when compared to Al-MCM-41 and, due to a lower accessibility of the reactant molecule to the acidic sites of SAPO-5, partially blocked for fatty acid molecules by the considerable amount of amorphous material, as detected by XRD.

show abstract

“…The liquid fuel produced has compatibility in storage, transportation and serves as source of fuel, energy carrier and a chemical [56]. The process is versatile in handling the type of raw material and the conversion occurs faster [57].…”

Section: Features Advantages Disadvantagesmentioning

confidence: 99%

“…This is due to the presence of some undesirable compounds [27,28]. The yield and final properties of the fuel are dependent on the factors such as reactor design and operating conditions [56]. It lowers the residence time in the reactor and improves the selectivity [59].…”

Section: Features Advantages Disadvantagesmentioning

confidence: 99%

Review of Various Technologies Used for Biodiesel Production

Girish

2019

IJMPERD

View full text Add to dashboard Cite

The energy crises, mainly the rapid depletion of fossil fuels are considered as an important global problem. Thus it necessitates to search for an alternative source of fuel to meet the energy demand. Energy can be produced from different sources among which vegetable oils, non-edible oils and organic waste are considered as potential feed stock for producing biodiesel. Biodiesel is an alternative fuel and it solves the problem of depending on the non-renewable resources. But the major concern with the biodiesel production is that it involves high production cost, purification of the final product and technical constraints associated with the process. Therefore in the recent time, lot of improvements are done with respect to biodiesel production process and the attention is paid for developing process intensification technologies to address the above problems. Various modified methods for producing biodiesel are pyrolysis, supercritical process, ultrasound, reactive distillation, reactive separation, microwave technique and membrane separation. Thus in the current study the biodiesel production from these methods were discussed and the benefits and the drawbacks of these processes were reviewed.

show abstract

On biodiesels from castor raw oil using catalytic pyrolysis

Cited by 53 publications

References 25 publications

Development of castor oil–based polymers: A review

Development of castor oil–based polymers: A review

Thermal and Catalytic Pyrolysis of Dodecanoic Acid on SAPO-5 and Al-MCM-41 Catalysts

Review of Various Technologies Used for Biodiesel Production

Contact Info

Product

Resources

About