Carica papaya stem: A source of versatile heterogeneous catalyst for biodiesel production and C–C bond formation

Gohain, Minakshi; Laskar, Khairujjaman; Paul, Atanu Kumar; Daimary, Niran; Maharana, Mrutyunjay; Goswami, Imon Kalyan; Hazarika, Ankita; Bora, Utpal; Deka, Dhanapati

doi:10.1016/j.renene.2019.09.016

Cited by 123 publications

(51 citation statements)

References 69 publications

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“…Furthermore, our observation aligns with earlier reports on the calcined individual agrowastes which was combined in this study [18,[21][22][23]. This is also true for agrowastes such as banana peduncle and C. papaya stem [14,15].…”

Section: Xrd Pattern Of Calcined Cpksupporting

confidence: 92%

“…In another report, mass fraction of calcined banana peduncle ash at 700 • C for 4 h showed K (68.37%) as the dominant component, but with traces of Ca and Mg too [14]. Gohain et al [15] reported that calcined Carica papaya stem at 700 • C for 4 h contains K (56.71%), Ca (21.08%), Na (14.78%) and Mg (4.41%). Calcined waste of cupuaçu seeds at 800 • C for 4 h was reported to contain K, Ca and Mg with composition of 54.76, 17.57 and 3.61%, respectively [12].…”

Section: Sem Analysis Of Calcined Cpkmentioning

confidence: 97%

“…The phosphate and silicate ion components are identified by the adsorption band of 1029 cm −1 [7,13,23]. The band at 679 cm −1 is attributable to stretching vibrations of K-O [15]. The characteristic bands at 879 and 679 cm -1 indicate the presence of K2CO3•1.5H2O.…”

Section: Ir Spectrum For Calcined Cpkmentioning

confidence: 99%

“…Evidence from several works indicate that this approach has been successfully applied for biodiesel production. Sources of biomass-derived catalysts include waste shells, biomass ashes, activated carbon-supported catalysts, animal bones and waste coral [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Biodiesel Synthesis from Honne-Rubber-Neem Oil Blend with a Novel Mesoporous Base Catalyst Synthesized from a Mixture of Three Agrowastes

et al. 2020

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Application of solid catalysts synthesized from agricultural wastes provides an environmentally benign and low-cost process path to synthesize biodiesel. An ash containing an equal mixture of cocoa pod husk, plantain peel and kola nut pod husk ashes (CPK) was obtained by open combustion of each of the biomass in air and calcined at 500 °C for 4 h. The calcined CPK ash was characterized to determine its catalytic potential. Two-level transesterification technique was used to synthesize biodiesel using the developed catalyst. The process parameters involved were optimized for the microwave-aided transesterification of a blend of honne, rubber seed and neem oils in a volumetric ratio of 20:20:60, respectively. The study showed that the ash derived from combination of the biomass wastes provided a catalyst which consists all necessary catalytic ingredients in their relative abundance. The calcined CPK consists of 47.67% of potassium, 5.56% calcium and 4.21% magnesium attesting to its heterogenous status. The physisorption isotherms reveals that it was dominantly mesoporous in structure and made up of nanoparticles. A maximum of 98.45 wt.% biodiesel was obtained from a MeOH:oil blend of 12:1, CPK concentration of 1.158 wt.% and reaction time of 6 min under microwave irradiation. The quality of the synthesized biodiesel satisfied the requirements stipulated by standard specifications. Thus, this work demonstrates that a blend of agrowastes and mixtures of non-edible oils could be used to synthesize good quality and sustainable biodiesel that can replace fossil diesel.

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Section: Xrd Pattern Of Calcined Cpksupporting

confidence: 92%

Section: Sem Analysis Of Calcined Cpkmentioning

confidence: 97%

Section: Ir Spectrum For Calcined Cpkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sustainable Biodiesel Synthesis from Honne-Rubber-Neem Oil Blend with a Novel Mesoporous Base Catalyst Synthesized from a Mixture of Three Agrowastes

et al. 2020

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“…Additionally, many researchers have reported the ash based heterogeneous catalysts derived from different agricultural wastes as the promising green catalysts for biodiesel production. Some of the reported heterogeneous catalysts from agro-wastes for biodiesel productions are Musa balbisiana [16][17][18], Lemna perpusilla [19], coconut husk [20], rice husk [21], cocoa pod husk [22], Carica papaya stem [23], Tectona grandis leaves [24], etc.…”

Section: Introductionmentioning

confidence: 99%

Water hyacinth ash: an efficient green catalyst for the synthesis of β-amino carbonyl/nitrile compounds by aza-Michael reaction at room temperature

Talukdar

Deka

2020

SN Appl. Sci.

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Water hyacinth ash is found to be an efficient and reusable catalyst for the synthesis of β-amino carbonyl/nitrile compounds by aza-Michael reaction of amines with α,β-unsaturated compounds at room temperature under solvent free condition. Due to low cost of the catalyst, good activity, ease of handling and easy recovery with high yields of the products in short reaction time, easy workup procedure, mild reaction condition, the protocol is highly applicable in synthetic organic chemistry.

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Mixed Metal Oxide Catalysts in Biodiesel Production

Lowe

Gardy

et al. 2022

Biodiesel Production

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Carica papaya stem: A source of versatile heterogeneous catalyst for biodiesel production and C–C bond formation

Cited by 123 publications

References 69 publications

Sustainable Biodiesel Synthesis from Honne-Rubber-Neem Oil Blend with a Novel Mesoporous Base Catalyst Synthesized from a Mixture of Three Agrowastes

Sustainable Biodiesel Synthesis from Honne-Rubber-Neem Oil Blend with a Novel Mesoporous Base Catalyst Synthesized from a Mixture of Three Agrowastes

Water hyacinth ash: an efficient green catalyst for the synthesis of β-amino carbonyl/nitrile compounds by aza-Michael reaction at room temperature

Mixed Metal Oxide Catalysts in Biodiesel Production

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