Graphite oxide-supported CaO catalysts for transesterification of soybean oil with methanol

Zu, Yanhong; Tang, Jianguo; Zhu, Wanchun; Zhang, Min; Liu, Gang; Liu, Yan; Zhang, Wenxiang; Jia, Mingjun

doi:10.1016/j.biortech.2011.07.032

Cited by 69 publications

(17 citation statements)

References 31 publications

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“…Graphite oxide (GO) supported CaO [80] was successfully applied to the transesterification of soybean oil with methanol. The catalyst maintained high activity (>90%) and could be reused after calcination at 500˚C up to four consecutive reaction cycles with no significant loss of activity after four cycles.…”

Section: Supported Cao and Mgo Catalystsmentioning

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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Section: Supported Cao and Mgo Catalystsmentioning

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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“…As can be seen from Fig. 1a, the peaks appear at 2θ = 26 • and 54 • , which correspond to the diffraction peaks of the NGP plane [12]. From Fig.…”

Section: Catalyst Characterizationsmentioning

confidence: 71%

“…Besides, exfoliated GO sheet with large specific surface area, may make it a good carrier for heterogeneous solid base catalyst. It has been used as support to prepare catalysts for transesterification of soybean oil with methanol and got the FAME yield more than 97 % in 2 h during the first reaction cycle as well as 95.8 % during the fourth reaction cycle [12].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization of Graphite Oxide Loaded with K2CO3 as Heterogeneous Catalyst and Its Transesterification Application

2015

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A novel heterogeneous solid base catalyst was prepared by graphite oxide loaded with K 2 CO 3 compound and successfully applied to transesterification of soybean oil with methanol to biodiesel (fatty acid methyl esters). The prepared catalyst was characterized using techniques such as Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectrometer, transmission electron microscopy, differential scanning calorimetry, thermogravimetry analysis, and the Hammett indicator methods. The effect of various parameters such as methanol/oil molar ratio, reaction temperature, catalyst amount, reaction time on the prepared catalytic activity was investigated. The optimal transesterification conditions obtained by this experiment were: methanol/oil molar ratio of 15:1, reaction temperature of 65 • C, catalyst amount of 3.0 wt%, and reaction time of 3 h. The prepared heterogeneous solid base catalyst has longer lifetime, and biodiesel yield could be still over 87.1 % after being used for five cycles.

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“…In doped CaO with used cotton seed oil as feed stock with 3:1-8:1 alcohol:oil molar ratio at 35-65 °C gives 100% yield conversion whereas with rapeseed oil with 6:1-12:1 alcohol: oil molar ratio at 70-90 °C gave 93% yield conversion which were lowest in all other feed stock [6,15]. In loaded CaO the higher yield was with jatropha oil with 99%, 15:1 alcohol: oil molar ratio at 70 °C and lowest was recorded with soybean oil with 97.8% yield at 60 0 C and 15:1 alcohol:oil molar ratio [6,16].…”

Section: Cao Catalyst In Synthesis Of Biodieselmentioning

confidence: 91%

Advancement in the Utilization of Nanocatalyst for Transesterification of Triglycerides

Kumar¹,

Sharma²,

Srivastava³

et al. 2018

JNST

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Graphite oxide-supported CaO catalysts for transesterification of soybean oil with methanol

Cited by 69 publications

References 31 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

Preparation, Characterization of Graphite Oxide Loaded with K2CO3 as Heterogeneous Catalyst and Its Transesterification Application

Advancement in the Utilization of Nanocatalyst for Transesterification of Triglycerides

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