Characterization and application of dolomite as catalytic precursor for canola and sunflower oils for biodiesel production

Correia, Leandro Marques; Campelo, Natália de Sousa; Novaes, Denise S.; Cavalcante, Célio L.; Cecilia, Juan Antonio; Rodríguez‐Castellón, Enrique; Vieira, Rodrigo Silveira

doi:10.1016/j.cej.2015.01.097

Cited by 116 publications

(54 citation statements)

References 41 publications

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“…Furthermore, the catalyst stability enhancement due to the synergistic effect of CaO and talc mixing was indeed a foregone conclusion compared with that of the pure CaO. Moreover, stability and activity of this mixed material CaO‐talc were also better than those reported for transesterification of canola oil utilizing other minerals as supports including dolomite , and bentonite species.…”

Section: Resultsmentioning

confidence: 99%

Transesterification of Canola Oil to Biodiesel Using CaO/Talc Nanopowder as a Mixed Oxide Catalyst

2017

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A series of heterogeneous catalysts including different molar ratios of CaO/talc was synthesized to study the transesterification reaction of canola oil and methanol under different reaction conditions. Characterization and kinetic results revealed that the activity of this catalyst was enhanced due to the increase of CaO/talc molar ratio value leading to an improvement in the biodiesel production. Moreover, the effect of various parameters on the activity of the undertaken catalysts was studied in order to determine the optimum process conditions. Leaching measurements and the durability of the CaO/talc catalyst under several reaction cycles were evaluated and proved it to be a stable catalyst.

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Section: Resultsmentioning

confidence: 99%

Transesterification of Canola Oil to Biodiesel Using CaO/Talc Nanopowder as a Mixed Oxide Catalyst

2017

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“…Correia et al, [68] studied the dolomite catalyst calcined at 850˚C for 3 h during three cycles of reaction. In each cycle, the catalyst was separated from reaction medium, using a vacuum system, washed twice with methanol and dried at 100˚C for 1 h. This catalyst showed a slight decrease of the catalytic activity after each reuse.…”

Section: Binary Oxides: Cao/mgomentioning

confidence: 99%

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Oueda¹,

Bonzi-Coulibaly²,

Ouédraogo³

2017

MSA

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The activity of a catalyst in transestrification reaction usually declines with repeated uses and this limits the possibility to use it many times. This paper presents a review of various techniques used to evaluate the activity changes, the recycling processes for calcium and magnesium oxides based heterogeneous catalysts for biodiesel production. The activity of calcium and magnesium oxides based catalysts declines due to leaching, surface or active sites poisoning by reactant or product molecules and modification of physical aspects. Physico-chemical methods (AAS, BET, CO 2 -TPD, EDS, FTIR, ICP-AES, SEM, TG/DTA and XRD) were used to check the catalyst modification and to confirm the deactivation. When separated from the reaction mixture by filtration, the catalyst could be reused without any treatment or recycled by washing, drying or/and recalcination. Between various recycling processes for calcium and magnesium oxides based catalysts, mixed oxides showed less leaching and performed FAME or FAEE yield >90% with reusability.

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“…Many studies have been done to explore the environmentally friendly low‐cost heterogeneous catalysts from wastes. These catalysts cover marble powder, bones, wood ash, waste river shells, and egg shells as heterogeneous catalysts …”

Section: Introductionmentioning

confidence: 99%

Marble slurry derived hydroxyapatite as heterogeneous catalyst for biodiesel production from soybean oil

Gupta¹,

Agarwal²,

Dalai

2018

Can J Chem Eng

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In this study, utilization of waste marble slurry (MS) as an eco-friendly and low-cost heterogeneous catalyst is introduced for biodiesel production from soybean oil. Catalytic transesterification reaction was done to convert biodiesel from soybean oil using Marble slurry (MS) derived calcined marble slurry (CMS), and hydroxyapatite (HAP) as a heterogeneous catalyst. Marble slurry derived catalysts were characterized by XRD, FTIR, SEM, and TGA with elemental analysis. Hammett indicator method and ion exchange method were also used to verify catalytic activities of the catalysts. The HAP provided the better biodiesel yield of 94 AE 1 % with the highest basicity (13.30 mmol/g) and basic strength than CMS under optimized reaction conditions: reaction temperature 65 8C; reaction time 3 h; methanol/oil molar ratio 9:1; and catalyst concentration 6 wt%. Reusability tests provide confirmation about the stability of the catalyst and slight fluctuations in catalytic activity and biodiesel yield when used up to five runs.

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Characterization and application of dolomite as catalytic precursor for canola and sunflower oils for biodiesel production

Cited by 116 publications

References 41 publications

Transesterification of Canola Oil to Biodiesel Using CaO/Talc Nanopowder as a Mixed Oxide Catalyst

Transesterification of Canola Oil to Biodiesel Using CaO/Talc Nanopowder as a Mixed Oxide Catalyst

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Marble slurry derived hydroxyapatite as heterogeneous catalyst for biodiesel production from soybean oil

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