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All Journal Jurnal Keramik dan Gelas Indonesia Chimica et Natura Acta Jurnal Keramik dan Gelas Indonesia
Solihudin Solihudin
Departemen Kimia FMIPA Unpad
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology

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Pembentukan Karbon Konduktif dari Sekam Padi dengan Metode Hidrotermal Menggunakan Larutan Kalium Karbonat Solihudin Solihudin; Rustaman Rustaman; Haryono Haryono
Chimica et Natura Acta Vol 8, No 1 (2020)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v8.n1.25076

Abstract

Sekam padi, produk sampingan di penggilingan padi, adalah salah satu sumber karbon, berlimpah, terbarukan dan murah. Komponen utama sekam padi adalah selulosa (38%), hemi-selulosa (18%), lignin (22%), dan silika. Sekam padi mengandung senyawa organik tinggi, berpotensi untuk digunakan sebagai bahan dasar karbon berpori. Pembentukan karbon berpori dari sekam padi dilakukan melalui pelarutan silika dari arang sekam padi menggunakan larutan kalium karbonat dengan proses hidrotermal. Pada proses hidrotermal ini dilakukan dengan variasi rasio mol kalium karbonat terhadap silika (1:1, 1,5:1, 2:1, 2,5:1. dan 3:1) serta varasi waktu 1, 2, 3, dan 4 jam. Karbon yang mempunyai kadar abu terendah kemudian di kalsinasi pada suhu 500, 700, dan 900°C. Pelarutan silika yang paling efektif menggunakan larutan kalium karbonat yaitu pada perbandingan 3: 1 dengan suhu 120oC selama 2 jam. Semakin tinggi suhu kalsinasi konduktivitas karbon meningkat dan kondutivitas tertinggi diperoleh pada karbon dikalsinasi pada suhu 900 °C selama 2 jam dengan konduktivitas 17,29 S.m-1.
Synthesis and Characterization of Silicon Carbide-Carbon Composite (SiC-C) from Rice Husk Using Magnesiothermic Reduction Solihudin Solihudin; Haryono MT
Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i2.7419

Abstract

Silicon carbide (SiC) and SiC-C composite are non-oxide materials with good thermal properties so that they can be widely applied in industry. SiC can be synthesized by the magnesiothermic reduction method at a relatively lower temperature compared to carbothermal reduction. Rice husk charcoal has potential silicon and carbon content so that it can be used as a base material for the manufacture of SiC. This study aims to study the effect of calcination temperature in argon gas medium on the formation of SiC-C composites from rice husk charcoal reduction products using the magnesiothermic reduction method. The research methods include carbonization of rice husks, synthesis of SiC with magnesiothermic reduction method, calcination in argon gas medium for reduction products, and product purification, and product characterization. Calcination at the SiC-C composite formation stage was carried out at various temperatures of 700 and 1000 oC. The synthesized products were further characterized by FT-IR and XRD. Characterization by FT-IR showed that SiC was formed by magnesiothermic reduction method, while based on characterization by XRD, calcination at 700 oC in argon gas medium to the reduction product produced SiC-C composites with the highest content.
The Utilization of Rice Husk Charcoal as a Source of Silica in The Synthesis of Forsterite in Air Medium Haryono MT; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6421

Abstract

Forsterite has a heat resistance property at high temperatures so it has the potential as a refractory material. As the main agricultural commodity in Indonesia, rice is a potential raw material as a source of amorphous silica and carbon through the partial burning process of rice husks. This study aims to determine the effect of calcination temperature in air medium on the process of forming forsterite from MgCO3 and rice husk charcoal. The forsterite/carbon synthesis was carried out at a mole ratio of MgCO3 to SiO2 of 2:1. The research method includes the preparation of rice husk charcoal by gasification; synthesis of forsterite with variations in calcination temperature at 700, 800, 900, and 1000 oC for 2 hours; and characterization of synthesis results using FTIR and XRD. The results showed that the higher the calcination temperature, based on the formation of bonds from the results of FTIR analysis and XRD diffractogram, the more the forsterite structure was formed. Calcination at 1000 oC is the optimum temperature for the formation of forsterite.
Synthesis and Characterization of Silicon Carbide-Carbon Composite (SiC-C) from Rice Husk Using Magnesiothermic Reduction Solihudin Solihudin; Haryono MT
Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i2.7419

Abstract

Silicon carbide (SiC) and SiC-C composite are non-oxide materials with good thermal properties so that they can be widely applied in industry. SiC can be synthesized by the magnesiothermic reduction method at a relatively lower temperature compared to carbothermal reduction. Rice husk charcoal has potential silicon and carbon content so that it can be used as a base material for the manufacture of SiC. This study aims to study the effect of calcination temperature in argon gas medium on the formation of SiC-C composites from rice husk charcoal reduction products using the magnesiothermic reduction method. The research methods include carbonization of rice husks, synthesis of SiC with magnesiothermic reduction method, calcination in argon gas medium for reduction products, and product purification, and product characterization. Calcination at the SiC-C composite formation stage was carried out at various temperatures of 700 and 1000 oC. The synthesized products were further characterized by FT-IR and XRD. Characterization by FT-IR showed that SiC was formed by magnesiothermic reduction method, while based on characterization by XRD, calcination at 700 oC in argon gas medium to the reduction product produced SiC-C composites with the highest content.
The Utilization of Rice Husk Charcoal as a Source of Silica in The Synthesis of Forsterite in Air Medium Haryono MT; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6421

Abstract

Forsterite has a heat resistance property at high temperatures so it has the potential as a refractory material. As the main agricultural commodity in Indonesia, rice is a potential raw material as a source of amorphous silica and carbon through the partial burning process of rice husks. This study aims to determine the effect of calcination temperature in air medium on the process of forming forsterite from MgCO3 and rice husk charcoal. The forsterite/carbon synthesis was carried out at a mole ratio of MgCO3 to SiO2 of 2:1. The research method includes the preparation of rice husk charcoal by gasification; synthesis of forsterite with variations in calcination temperature at 700, 800, 900, and 1000 oC for 2 hours; and characterization of synthesis results using FTIR and XRD. The results showed that the higher the calcination temperature, based on the formation of bonds from the results of FTIR analysis and XRD diffractogram, the more the forsterite structure was formed. Calcination at 1000 oC is the optimum temperature for the formation of forsterite.
Co-Authors Haryono Haryono Haryono MT Rustaman Rustaman