Optimization on electrochemical synthesis of HKUST-1 as candidate catalytic material for Green diesel production

Lestari, Witri Wahyu; Nugraha, Reva Edra; Winarni, Ina; Adreane, Marisa; Rahmawati, Fitria

doi:10.1063/1.4945492

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…The exothermic peak at 331 • C provided evidence of the thermal degradation of the vba ligands with the corresponding destabilization of the paddle-wheel arrangement. This behavior has previously been observed in several paddle-wheel compounds [37][38][39]44].…”

Section: Synthesis and Characterizationsupporting

confidence: 78%

“…The dynamic decoordination–coordination behavior of the acetonitrile-promoted copper sites was observed with the possibility of acting as Lewis acids; therefore, a catalytic property of the material could be speculated. Several commercial materials, such as the known HKUST-1 or Basolite, along with the interesting topology of the Cu(II) paddle wheel, can be used as important catalyst materials [ 37 ]. Therefore, we posited that sufficiently fed H 2 O molecules with environmental moisture could be coordinated to the metal center of a paddle wheel whose structure was preserved.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and Characterization of a New Cu(II) Paddle-Wheel-like Complex with 4-Vinylbenzoate as an Inorganic Node for Metal–Organic Framework Material Design

et al. 2023

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A new Cu(II) paddle-wheel-like complex with 4-vinylbenzoate was synthesized using acetonitrile as the solvent. The complex was characterized by X-ray crystal diffraction, FT-IR, diffuse reflectance spectroscopy, thermogravimetric, differential scanning calorimetric, magnetic susceptibility, and electronic paramagnetic resonance analyses. The X-ray crystal diffraction analysis indicated that each copper ion was bound at an equatorial position to four oxygen atoms from the carboxylate groups of the 4-vinylbenzoate ligand in a square-based pyramidal geometry. The distance between the copper ions was 2.640(9) Å. The acetonitrile molecules were coordinated at the axial position to the copper ions. Exposure of the Cu(II) complex to humid air promoted the gradual replacement of the coordinated acetonitrile by water molecules, but the complex structure integrity remained. The EPR spectra exhibited signals attributed to the presence of a mixture of the monomeric (S = ½) and dimeric (S = 1) copper species in a possible 3:1 ratio. The magnetic studies revealed a peak at 50–100 K, which could be associated with the oxygen absorption capacity of the Cu(II)–vba complex.

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Section: Synthesis and Characterizationsupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of a New Cu(II) Paddle-Wheel-like Complex with 4-Vinylbenzoate as an Inorganic Node for Metal–Organic Framework Material Design

et al. 2023

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“…Luas permukaan BET HKUST-1 yang disintesis secara solvotermal mencapai 636 m 2 /g, dua kali lipat dibanding HKUST-1 yang disintesis secara elektrokimia seperti yang ditampilkan pada Tabel 3. HKUST-1 hasil sintesis dari metode solvo-hidrotermal memiliki luas permukaan sebanding dengan dilaporkan oleh Schlichte et al (2004) serta Chui et al (1999), sedangkan HKUST-1 pada metode elektrokimia luas permukaan menunjukkan kemiripan pada penelitian yang dilaporkan oleh Lestari et al (2016b). Perbedaan luas permukaan ini dimungkinkan karena adanya aglomerasi dan cacat kristal HKUST-1 hasil sintesis dari metode elektrokimia sehingga menyebabkan menurunnya luas permukaan kristal HKUST-1.…”

Section: Karakterisasi Hkust-1 Dengan Nitrogen Sorption Isothermunclassified

Pengaruh Metode Sintesis secara Solvo-Hidrotermal dan Elektrokimia terhadap Morfologi Struktur HKUST-1 sebagai Katalis Heterogen dalam Reaksi Esterifikasi Asam Palmitat

et al. 2023

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Pemilihan metode sintesis akan berpengaruh terhadap karakter material yang dihasilkan yang meliputi kristanilitas, morfologi, luas permukaan, maupun kinerja dalam aplikasinya. Pada penelitian ini telah disintesis HKUST-1 secara solvo-hidrotermal dan elektrokimia dalam pelarut EtOH:H2O (1:1 (v/v)) dan diujicobakan sebagai katalis heterogen dalam esterifikasi asam palmitat. Sintesis secara solvo-hidrotermal, berlangsung dalam autoklaf selama 12 jam pada suhu 120 °C. Sementara itu, sintesis HKUST-1 secara elektrokimia digunakan elektroda tembaga, tegangan sel 15 V selama 90 menit dengan bantuan elektrolit TBATFB pada suhu dan tekanan ambien. Uji katalitik reaksi esterifikasi asam palmitat dilakukan dengan metode refluks selama 2 jam. HKUST-1 hasil sintesis menunjukkan kesesuaian puncak dengan pola difraksi standar CCDC 112954. Hasil refinement menunjukkan HKUST-1 yang diperoleh melalui metode solvo-hidrotermal memiliki kemurnian lebih tinggi. Analisis morfologi menggunakan citra SEM menunjukkan HKUST-1 yang disintesis secara solvo-hidrotermal bergeometri oktahedral sempurna dengan ukuran partikel rata-rata 10,28±1,5 μm, sedangkan HKUST-1 yang disintesis secara elektrokimia berbentuk oktahedral cacat (defect) dengan ukuran partikel rata-rata 4,5±1,6 μm. Analisis termal menunjukkan bahwa HKUST-1 hasil sintesis memiliki stabilitas hingga 300 °C. Uji katalitik dalam reaksi esterifikasi asam palmitat dengan etanol dengan keberadaan katalis HKUST-1 (0,6% berat) menunjukkan peningkatan konversi produk dengan konversi yang paling tinggi ditunjukkan pada HKUST-1 yang disintesis dengan metode elektrokimia (mencapai 43,3%).Effect of Solvo-Hydrothermal and Electrochemical Synthesis Methods on the Structural Morphology of HKUST-1 as a Heterogeneous Catalyst in Palmitic Acid Esterification Reaction. Selection of synthesis method will influence the materials properties including crystallinity, morphology, surface area, and application performance. In this research HKUST-1 was successfully synthesized under solvo-hydrothermal and electrochemical method, and tested as a heterogeneous catalyst in esterification reactions of palmitic acid. Synthesis under solvo-hydrothermal condition was performed in an autoclave at 120 °C for 12h. In addition, the electrochemical synthesis of HKUST-1 using copper electrodes was performed at 15 V in ambient temperature and pressure, for 90 minutes with TBATFB as an electrolyte. The catalytic test in palmitic acid esterification reaction was carried out by reflux for 2h. The HKUST-1 showed conformity with the standard diffraction pattern CCDC 112954. The refinement results shows that solvothermal product has higher purity. Morphological analysis using SEM imaging showed HKUST-1 obtained from solvo-hydrothermal method possess perfect octahedral geometry with average particle size 10.28±1.58 μm, meanwhile electrochemically-synthesized possess a defect octahedral geometry with average particle size 4.5±1.6 μm. Thermal analysis showed that HKUST-1 is stable up to 300 °C. Catalytic test in esterification reaction of palmitic acid with ethanol in the presence of HKUST-1 as catalyst (0.6% wt) showed an enhanced product conversion with highest conversion was achieved in the presence of electrosyntehsized HKUST-1 (up to 43.3%).

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“…For the electrochemical synthesis of MOFs, metal ions are continuously supplied through anodic dissolution instead of metals salts; they react with the linker molecules and a conducting salt dissolved in the reaction medium [108]. The method was first used for the preparation of HKUST-1 [Cu 3 (BTC) 2 ], which afforded promising results in renewable fuel production [105].…”

Section: Electrochemical Synthesismentioning

confidence: 99%

“…Nevertheless, in addition to the large internal surface of MOFs, other features-such as low steric hindrance and high reactive group density-are needed for effective multipoint covalent attachment. Moreover, the enzyme should retain its activity under the immobilization conditions [105].…”

Section: Covalent Bindingmentioning

confidence: 99%

Advances in Enzyme and Ionic Liquid Immobilization for Enhanced in MOFs for Biodiesel Production

et al. 2021

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Biodiesel is a promising candidate for sustainable and renewable energy and extensive research is being conducted worldwide to optimize its production process. The employed catalyst is an important parameter in biodiesel production. Metal–organic frameworks (MOFs), which are a set of highly porous materials comprising coordinated bonds between metals and organic ligands, have recently been proposed as catalysts. MOFs exhibit high tunability, possess high crystallinity and surface area, and their order can vary from the atomic to the microscale level. However, their catalytic sites are confined inside their porous structure, limiting their accessibility for biodiesel production. Modification of MOF structure by immobilizing enzymes or ionic liquids (ILs) could be a solution to this challenge and can lead to better performance and provide catalytic systems with higher activities. This review compiles the recent advances in catalytic transesterification for biodiesel production using enzymes or ILs. The available literature clearly indicates that MOFs are the most suitable immobilization supports, leading to higher biodiesel production without affecting the catalytic activity while increasing the catalyst stability and reusability in several cycles.

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Optimization on electrochemical synthesis of HKUST-1 as candidate catalytic material for Green diesel production

Cited by 5 publications

References 24 publications

Synthesis and Characterization of a New Cu(II) Paddle-Wheel-like Complex with 4-Vinylbenzoate as an Inorganic Node for Metal–Organic Framework Material Design

Synthesis and Characterization of a New Cu(II) Paddle-Wheel-like Complex with 4-Vinylbenzoate as an Inorganic Node for Metal–Organic Framework Material Design

Pengaruh Metode Sintesis secara Solvo-Hidrotermal dan Elektrokimia terhadap Morfologi Struktur HKUST-1 sebagai Katalis Heterogen dalam Reaksi Esterifikasi Asam Palmitat

Advances in Enzyme and Ionic Liquid Immobilization for Enhanced in MOFs for Biodiesel Production

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