Biodiesel production from waste cooking oil catalyzed by TiO2–MgO mixed oxides

Zhang, Wen; Yu, Xinhai; Tu, Shan‐Tung; Yan, Jinyue; Dahlquist, Erik

doi:10.1016/j.biortech.2010.07.066

Cited by 231 publications

(96 citation statements)

References 30 publications

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“…Wen et al [31] investigated the regeneration of TiO 2 -MgO catalyst after the fourth reuse. Interestingly, results have showed that a high FAME yield (93.8%) can be achieved for the regenerated catalyst compared with that of the fresh sample (92.3%).…”

Section: Analytical Approaches For Cao/mgo Based Catalyst Activity Chmentioning

confidence: 99%

“…In order to study TiO 2 -MgO catalyst surface poisoning and pore filling, Wen et al [31] have exploited thermogravimetry and differential thermogravimetry analysis (TG-DTA), after the first use. The results…”

Section: Analytical Approaches For Cao/mgo Based Catalyst Activity Chmentioning

confidence: 99%

“…Many studies are cited in literature: CaO/MgO [11] [12], CaO/CeO [13], CaO/ ZnO [11] [14] [15], CaO/ZrO 2 [16] [17], MgO/SrO [9], CaO/aluminate [18], CaO/silicate [19] [20], Mg/Al oxides [18] [24], CaO/activated charcoal [25], CaO-KF [26] [27] [28] [29], MgO/KOH [30], Ti/MgO [31], MgO/chitosan [32], and CaO/zeolite [33].…”

mentioning

confidence: 99%

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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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Section: Analytical Approaches For Cao/mgo Based Catalyst Activity Chmentioning

confidence: 99%

Section: Analytical Approaches For Cao/mgo Based Catalyst Activity Chmentioning

confidence: 99%

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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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“…Therefore, we expected strong affinity in the interface between TiO2 and CaO. Although surface acidity is generated by mixing two types of metal oxides in many cases 15) , the mixed oxide of MgO and TiO2 is still a solid base 14) . Consequently, acid sites would not be generated by mixing CaO with TiO2.…”

Section: Introductionmentioning

confidence: 95%

“…Several Ca titanate salts, such as CaTiO3, are well known. The CaO and TiO2 system forms a solid solution 13), 14) . Therefore, we expected strong affinity in the interface between TiO2 and CaO.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Highly Active Solid Base Catalyst of Calcium Oxide Covered with Thin Layer of Titanium Oxide

Matsuhashi

Funaki

2016

J. Jpn. Petrol. Inst.

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Solid-base catalysts consisting of CaO covered with 5-20 mol% TiO2 (TiO2/CaO) were prepared by deposition of titanium tetraisopropoxide (Ti(OCH(CH3)2)4) on a Ca(OH)2 surface in an ethyl acetate solution, followed by thermal decomposition in air at 773-1073 K for 3 h. The catalyst heated at 773-973 K showed higher activity for the base catalyzed retro-aldol reaction to convert diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) to acetone at 299 K. 10 mol% TiO2/CaO heat-treated at 773 K was the most active catalyst for the retro-aldol reaction among the metal oxide-covered CaO catalysts. The catalyst treated at 1073 K was inactive for the same reaction, as was uncovered CaO. The catalytic activity of TiO2/CaO poisoned by water was recovered by washing with acetone, confirming that TiO2-covered CaO had sufficient stability against H2O. No leaching of Ca 2 into the polar solvent diacetone alcohol was observed in any covered catalyst.

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Production of Biodiesel from Various Sources

Saxena

Sharma

Agrawal

et al. 2013

Biofuels Production

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We all are aware that the depletion of the fossil fuel reservoirs has lead to an urgent search for alternative forms of present day fuels. The possible solution could come from biofuels, especially biodiesel. Biodiesel could be produced from plants, microorganisms, fungi, wastewater, microalgae etc., but these sources suffer from one or more drawbacks. However, microalgae could serve as the best source for biodiesel production since it does not lead to a land versus fuel confl ict. This chapter is mainly focused on the sources for the production of biodiesel, biodiesel production processes, catalysis involved and the factors affecting biodiesel production. We have to understand that for the best utilization of biodiesel in diesel engines, we have to incorporate technical modifi cations in traditional diesel engines so that biodiesel production could be promoted commercially.

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Biodiesel production from waste cooking oil catalyzed by TiO2–MgO mixed oxides

Cited by 231 publications

References 30 publications

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

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

Synthesis of Highly Active Solid Base Catalyst of Calcium Oxide Covered with Thin Layer of Titanium Oxide

Production of Biodiesel from Various Sources

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