Nano La2O3 as a heterogeneous catalyst for biodiesel synthesis by transesterification of Jatropha curcas L. oil

Zhou, Qiugui; Zhang, Heng; Chang, Fei; Li, Hu; Pan, Hongge; Xue, Wei; Hu, Deyu; Yang, Song

doi:10.1016/j.jiec.2015.07.013

Cited by 88 publications

(35 citation statements)

References 36 publications

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“…The sol-gel method is one of most widely used and effective synthesis methods in the preparation of acid-base bifunctional metal oxide catalysts [15,16]. The preparation of metal oxide catalysts by the sol-gel method has the advantages of simple synthesis procedure, good stability, uniformity of adulteration, and low temperature plasticity [17,18], which appears more conducive to the pronounced catalytic performance of solid functional materials.…”

Section: Introductionmentioning

confidence: 99%

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Wang

Zhang

et al. 2018

Materials

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The search for acid-base bifunctional catalysts has become a hot topic in the preparation of biofuels from renewable resources. In the present work, a series of novel acid-base bifunctional metal-boron catalysts were successfully prepared by a sol-gel method and characterized by XRD, IR, SEM, TEM, TGA, BET, and TPD. Among those bifunctional solid materials, the Ca-B(700) catalyst had the highest density of both acid and base sites and showed excellent catalytic performance in the production of biodiesel from nonedible oils with high acid value. Under the optimal reaction conditions of 20/1 methanol/oil mole ratio and 4 wt % catalyst dosage at 105 °C for 2 h, a high biodiesel yield of 96.0% could be obtained from Jatropha curcas oil in one-pot. In addition, Ca-B(700) was also applicable to producing biodiesel from Firmiana platanifolia L.f. oil in a relatively low acid value, with an almost quantitative yield (98.5%) at 65 °C after 2 h. The Ca-B(700) catalyst had good stability and reusability, which is a promising acid-base bifunctional catalytic material for the preparation of biodiesel.

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Section: Introductionmentioning

confidence: 99%

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Wang

Zhang

et al. 2018

Materials

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“…Flow chat of the synthesis process. Lanthanum oxide NPs, nanorods, nanowires and nanosheets can be prepared using various chemical and physical techniques including hydrothermal [14,15], solvothermal [16], microwave [16,17], sol-gel [17,18], sonochemical [19][20][21], and reveres micelles [22].Amongst these methods, the sol-gel synthesis process is a facile, inexpensiveand does not require any sophisticated, complicated and specialist equipment. Hydrothermal synthesis of lanthania nanoparticles was reported by Goharshadi et al [23] and an average particle size below 30 nm was achieved.…”

mentioning

confidence: 99%

Polyethylene glycol assisted facile sol-gel synthesis of lanthanum oxide nanoparticles: Structural characterizations and photoluminescence studies

Kabir

Hussain

Rahman

et al. 2019

Ceramics International

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…[24] La 2 O 3 support can be easily synthesized by some traditional methods such as thermal decomposition of La(NO) 3 · 6H 2 O, precipitation and hydrothermal methods. [25,26] However, with these methods, the prepared La 2 O 3 usually has low surface area, which limits the dispersion of active Ni species. Up to date, few reports have been profiled on using pure La 2 O 3 directly as the support of Ni to prepare catalysts for DRM.…”

Section: Introductionmentioning

confidence: 99%

Ni/La₂O₃ Catalysts for Dry Reforming of Methane: Insights into the Factors Improving the Catalytic Performance

Liu

Zhang

et al. 2019

ChemCatChem

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To understand the structure‐reactivity relationship of Ni/La2O3, and eventually get more applicable catalysts for DRM, glycine nitrate combustion (GNC), precipitation (PP) and thermal decomposition (TD) methods have been used to prepare La2O3 supports. Although all the supports possess a hexagonal La2O3 phase, their bulk and surface properties are significantly changed. By using them as supports, the interactions between NiO/Ni and La2O3 are varied, thus achieving Ni/La2O3 catalysts with different activity, stability and anti‐coking ability, which follow the order of 5Ni/La2O3‐GNC>5Ni/La2O3‐PP>5Ni/La2O3‐TD. On La2O3 having a higher surface area, a catalyst with a higher active metallic Ni surface area can be achieved. Therefore, the interfaces between Ni and La2O2CO3 can be enlarged, which effectively facilitates the reaction between carbon deposits and the La2O2CO3 formed during the DRM, thus preventing the accumulation of both and keeping the catalyst surface clean, active and stable. In addition, the amount of surface alkaline and active oxygen sites of the reduced catalysts obey the order of 5Ni/La2O3‐GNC>5Ni/La2O3‐PP>5Ni/La2O3‐TD, which is well consistent with the reaction performance. Therefore, these two factors are also believed to be critical to decide the reaction performance. It is concluded that Ni/La2O3 catalysts with high activity, stability and potent anti‐coking ability for DRM can be achieved by preparing catalysts with high Ni dispersion.

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Nano La2O3 as a heterogeneous catalyst for biodiesel synthesis by transesterification of Jatropha curcas L. oil

Cited by 88 publications

References 36 publications

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Polyethylene glycol assisted facile sol-gel synthesis of lanthanum oxide nanoparticles: Structural characterizations and photoluminescence studies

Ni/La₂O₃ Catalysts for Dry Reforming of Methane: Insights into the Factors Improving the Catalytic Performance

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Nano La2O3 as a heterogeneous catalyst for biodiesel synthesis by transesterification of Jatropha curcas L. oil

Cited by 88 publications

References 36 publications

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Efficient Catalytic Production of Biodiesel with Acid-Base Bifunctional Rod-Like Ca-B Oxides by the Sol-Gel Approach

Polyethylene glycol assisted facile sol-gel synthesis of lanthanum oxide nanoparticles: Structural characterizations and photoluminescence studies

Ni/La2O3 Catalysts for Dry Reforming of Methane: Insights into the Factors Improving the Catalytic Performance

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Ni/La₂O₃ Catalysts for Dry Reforming of Methane: Insights into the Factors Improving the Catalytic Performance