Separation of Kaolinite from Clay Minerals and Its Catalytic Activity in Transesterification Reactions DOI Open Access

Rahayu Rahayu,

Zarnida Widia Nengsih,

Syukri Arief

et al.

Hydrogen Jurnal Kependidikan Kimia, Journal Year: 2024, Volume and Issue: 12(1), P. 16 - 16

Published: Feb. 29, 2024

Kaolinite is a type of clay mineral that has the potential to be used as heterogeneous catalyst in transesterification reactions. However, natural still contains mixture minerals occur together. Therefore, an effort search for cheaper catalysts reduce price biodiesel production, this study carried out separation kaolinite from and tested its performance production Waste Cooking Oil (WCO). Separation fraction was with help NH4Cl dispersing agent. The main composition quartz, kaolinite, montmorillonite hematite. After process, crystallinity experienced increase marked by intensity several peaks, namely 2θ 12.24° area 103 108 at 25.00° 95 125. Thermal modification caused loss peaks area. 12.17°; 24.94° 62.39°. Si/Al ratio decreased after fractionation calcination processes. Average particle size h-clay 27.61 µm 21.09 K-clay. K-clay produced highest conversion palmitic acid 42%, while c-K-clay oleic stearate 30%. In addition, density water content catalyzed c-k-clay meet SNI standards. This finding further developed cost-effective based on resources production.

Language: Английский

The impact of heterogeneous catalyst on biodiesel production; a review DOI

Vartika Gupta,

Kishan Singh

Materials Today Proceedings, Journal Year: 2022, Volume and Issue: 78, P. 364 - 371

Published: Nov. 2, 2022

Language: Английский

Citations

35
Eco-Friendly Catalyst Design: Transforming volcanic lava ashes into sustainable synthesis of glycerol carbonate from glycerol in one pot solvent-free route DOI

Isack Kandola,

Thomas Kivevele, Askwar Hilonga

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116030 - 116030

Published: March 1, 2025

Language: Английский

Citations

0
Synthesis of biodiesel from castor oil catalyzed by sodium hydroxide dispersed on bentonite DOI
Maisari Utami,

Pandu Setiawan,

Iip Izul Falah

et al.

Sustainable Energy Technologies and Assessments, Journal Year: 2022, Volume and Issue: 53, P. 102526 - 102526

Published: July 20, 2022

Language: Английский

Citations

9
Nb(V)-containing saponite: a versatile clay for the catalytic degradation of the hazardous organophosphorus pesticide paraoxon under very mild conditions DOI Creative Commons
Stefano Marchesi, Stefano Econdi, Geo Paul

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 10(21), P. e39898 - e39898

Published: Oct. 28, 2024

A synthetic saponite clay containing structural Nb(V) metal centres (NbSAP) was investigated in the abatement of paraoxon-ethyl, an anti-cholinergic organophosphorus pesticide, under mild conditions (neutral pH, room temperature and ambient pressure) heterogenous phase, without additional basic additives. The material selected according to its high surface acidity ease preparation through a one-step hydrothermal synthesis. presence ions played crucial role efficiently catalysing degradation aggressive chemical substrates. niobium(V) oxide with very low also tested as reference material. study employed multi-technique approach monitor pesticide pathway by-products formed during experiments polar non-protic aqueous solvents. Notably, water, concentration paraoxon-ethyl significantly decreased by 82 % within first hour contact clay. Additionally, NbSAP demonstrated good performance after three repeated catalytic cycles subsequent reactivation.

Language: Английский

Citations

1
Thermodynamic Modeling of Liquid-Liquid Equilibrium in Ternary Systems with Biodiesel and Isolated Ester (Methyl Palmitate) DOI Open Access
J Bezerra,

Maria Rosiane De Alemeida ANDRADE,

Edyjancleide Rodrigues SİLVA

et al.

International Journal of Thermodynamics, Journal Year: 2022, Volume and Issue: 25(4), P. 56 - 65

Published: Nov. 30, 2022

Liquid-liquid equilibrium data were measured and analyzed for two ternary systems (biodiesel + methanol glycerol methyl palmitate glycerol). Biodiesel, produced by the conventional chemical route at 60 °C min, using soybean oil a molar rate of 10:1 potassium hydroxide concentration (KOH) 1 wt% exhibited thermal decomposition temperatures between 100 250 ºC, reaching mass loss approximately 98.8%, confirming conversion into biodiesel gas chromatography thermogravimetry. Tie line composition quality was verified Othmer-Tobias Hand correlation equations. The distribution selectivity coefficients calculated immiscibility regions. experimental tie good in UNIQUAC NRTL thermodynamic models. system displayed deviations 0.66 0.53% models, respectively. In addition, showed 1.23 0.48% deviation model, individual behavior main esters , based on model parameters, demonstrated that type fatty acid does not interfere correlation, likely due to similarity their properties.

Language: Английский

Citations

5
Triglyceride methanolysis in the presence of KOH immobilized on seashells-based anorthite and coal fly ash: a comparative study DOI
Ivaylo Tankov, L. Gonsalvesh, Ganka Kolchakova

et al.

Reaction Kinetics Mechanisms and Catalysis, Journal Year: 2023, Volume and Issue: 136(3), P. 1495 - 1528

Published: June 1, 2023

Language: Английский

Citations

1
Separation of Kaolinite from Clay Minerals and Its Catalytic Activity in Transesterification Reactions DOI Open Access

Rahayu Rahayu,

Zarnida Widia Nengsih,

Syukri Arief

et al.

Hydrogen Jurnal Kependidikan Kimia, Journal Year: 2024, Volume and Issue: 12(1), P. 16 - 16

Published: Feb. 29, 2024

Kaolinite is a type of clay mineral that has the potential to be used as heterogeneous catalyst in transesterification reactions. However, natural still contains mixture minerals occur together. Therefore, an effort search for cheaper catalysts reduce price biodiesel production, this study carried out separation kaolinite from and tested its performance production Waste Cooking Oil (WCO). Separation fraction was with help NH4Cl dispersing agent. The main composition quartz, kaolinite, montmorillonite hematite. After process, crystallinity experienced increase marked by intensity several peaks, namely 2θ 12.24° area 103 108 at 25.00° 95 125. Thermal modification caused loss peaks area. 12.17°; 24.94° 62.39°. Si/Al ratio decreased after fractionation calcination processes. Average particle size h-clay 27.61 µm 21.09 K-clay. K-clay produced highest conversion palmitic acid 42%, while c-K-clay oleic stearate 30%. In addition, density water content catalyzed c-k-clay meet SNI standards. This finding further developed cost-effective based on resources production.

Language: Английский

Citations

0