New Invention Profile
| Publication No: | IN202411032275 [India] | Application No: | IN202411032275 |
| Title: | A process for the preparation of high-grade graphene from subbituminous coal | ||
| Publication Date: | 28-11-2025 | File Date: | 23-04-2024 |
| Inventor(s): | Binoy Kumar Saikia; Abhishek Hazarika; Debashis Sarmah; Prasenjit Saikia; Tonkeswar Das; Ashutosh Thakur; Ajit Singh | ||
| IPC Classification: | C09K11/65, C01B32/15, C01B32/19, C01B32/184, C09D5/22, B82Y40/00 | ||
| Abstract: | The present invention relates to the process for preparation of high-grade turbostratic graphene from subbituminous tertiary coal from North eastern region of India by ultrasonic-assisted chemical oxidation and ultrafiltration followed by thermal reduction process. More particularly, the present invention relates to the efficient, scalable, low-cost process for preparation of high-quality graphene by ultrasonication supported chemical oxidation, ultrafiltration followed by thermal reduction process from low-grade subbituminous Indian coals. The synthesis of coal-derived graphene material is confirmed by various analytical methods such as High- Resolution Transmission Electron Microscope (HRTEM), Field Emission Scanning Electron Microscopy (FESEM), X-ray diffraction (XRD), Raman spectroscopy, X- ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared (FTIR) spectroscopy. This process can produce graphene on a large scale without using harsh acids, making it safer and more eco-friendly than existing methods. The present invention offers a sustainable and effective way to produce graphene with potential applications in different domains. |
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Industrial Applications
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Petroleum Fuels [Fuels and Lubricants]