Dataset of Thermogravimetric Analysis, Geochemical Characterization, and Pyrolysis Kinetics of Muara Enim Formation Lignite (Seam 6 Low and Seam 6 Up), South Sumatra Basin, Indonesia

Description

This dataset contains the experimental data supporting the study entitled "Isoconversional Kinetic Analysis and Statistical Modeling of Low-Rank Coal Pyrolysis: Insights into Seam Variability within the Muara Enim Formation". The dataset comprises raw and processed thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) data obtained from lignite samples collected from Seam 6 Low and Seam 6 Up of the Muara Enim Formation, South Sumatra Basin, Indonesia. Pyrolysis experiments were conducted under a nitrogen atmosphere using a PerkinElmer TGA 4000 thermogravimetric analyzer at heating rates of 10, 30, and 50 °C/min over a temperature range of 25–750 °C. The dataset includes proximate analysis results, TG and DTG curves, activation energy (Ea) calculated using the Flynn–Wall–Ozawa (FWO) isoconversional method, conversion data (α), statistical analyses (Pearson correlation and linear regression), and supporting figures. These data support the evaluation of the influence of heating rate on thermal decomposition behavior, char yield, and pyrolysis kinetics of Indonesian lignite. The dataset is intended to facilitate validation, reproducibility, and future comparative studies on coal pyrolysis kinetics and low-rank coal utilization.

Steps to reproduce

Coal samples were collected from Seam 6 Low and Seam 6 Up of the Muara Enim Formation in the South Sumatra Basin, Indonesia. Samples were crushed and sieved to 100 mesh before analysis. Proximate analysis was performed according to ASTM standards. Thermogravimetric analysis was carried out using a PerkinElmer TGA 4000 under nitrogen atmosphere (20 mL/min). Approximately 6 mg of each sample was heated from 25 °C to 750 °C at heating rates of 10, 30, and 50 °C/min. TG and DTG data were processed to determine the conversion degree (α). Activation energy was calculated using the Flynn–Wall–Ozawa (FWO) isoconversional method. Statistical analyses were performed using Pearson correlation and linear regression.

Institutions

• Padjadjaran University

  West Java, Bandung

Categories

Licence