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Alchemy: Jurnal Penelitian Kimia Pub Date : 2021-03-08 DOI:10.20961/ALCHEMY.17.1.47337.105-112

Aprilina Purbasari, T. W. Samadhi

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摘要

高丽是一种被广泛利用的矿物。高蛋白可以通过热去水温过程转化为更有反应性的物质。邦加的这项研究,热dehidroksilasi高岭土过程勿里洞成为metakaolin审查使用termogravimetri分析的30—900°C的温度范围的变暖速度10°C /分钟大气环境中空气。高岭土经历四个阶段分解和dehidroksilasi高岭土成为metakaolin发生在大约450—600°C的温度。基于外套和雷德芬、dehidroksilasi高岭土方法跟踪模型阶反应一个激活271.66 kJ / mol的能量和pre-eksponensial因素6,13 15×10 s - 1。用x射线光谱分析diffraction (XRD)和傅里叶变换红外(FTIR)在高岭土在550°C的温度下加热了3个小时后,表明大部分高岭土已变成metakaolin。这是通过热重力分析对口腔美素的热解析的研究。高丽是一种在不同行业中很常见的矿物。我们的甲壳虫可以将其转换成通过热脱水处理处理器更多的反应性。In this study,勿里洞邦加高岭土进入metakaolin之热dehydroxylation的过程是用thermogravimetric studied分析In a太阳城的30—900°C的温度和a的加热速率10 o C / min In an水大气层条件。高岭土underwent四阶段的decomposition》和高岭土进入metakaolin dehydroxylation occured at周围temperatures 450—600°C。改编自《外套与雷德芬方法、高岭土dehydroxylation跟着第一阶反应模型和activation energy of 271。66 kJ / mol和pre-exponential因子》6 . 13 15×10 s - 1。《用x射线分析diffraction (XRD)和傅里叶变换红外(FTIR)在加热之后的高岭土spectroscopy at 550°C的温度为3小时那里那个高岭土已经变成了metakaolin之最。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Kajian Dehidroksilasi Termal Kaolin menjadi Metakaolin menggunakan Analisis Termogravimetri

Kaolin merupakan mineral yang banyak dimanfaatkan di berbagai industri. Kaolin dapat diubah menjadi metakaolin yang lebih reaktif melalui proses dehidroksilasi termal. Pada penelitian ini, proses dehidroksilasi termal kaolin dari Bangka Belitung menjadi metakaolin dikaji menggunakan analisis termogravimetri pada rentang suhu 30 – 900 °C dengan laju pemanasan 10 °C/menit dalam lingkungan atmosfer udara. Kaolin mengalami empat tahap dekomposisi dan dehidroksilasi kaolin menjadi metakaolin terjadi pada suhu sekitar 450 – 600 °C. Berdasarkan metode Coats dan Redfern, dehidroksilasi kaolin mengikuti model reaksi order satu dengan energi aktivasi 271,66 kJ/mol dan faktor pre-eksponensial 6,13×10 15 s -1 . Hasil analisis menggunakan spektroskopi X-ray diffraction (XRD) dan Fourier Transform Infrared (FTIR) pada kaolin setelah dipanaskan pada suhu 550 °C selama 3 jam menunjukkan bahwa sebagian besar kaolin telah berubah menjadi metakaolin. Study of Thermal Dehydroxylation of Kaolin to Metakaolin using Thermogravimetric Analysis. Kaolin is a mineral that is widely used in various industries. Kaolin can be converted into metakaolin which is more reactive through thermal dehydroxylation processes. In this study, thermal dehydroxylation process of Bangka Belitung kaolin into metakaolin was studied using thermogravimetric analysis in a temperature range of 30 – 900 °C with a heating rate of 10 o C/min in an air atmosphere condition. Kaolin underwent four stages of decomposition and dehydroxylation of kaolin into metakaolin occured at temperatures around 450 – 600 °C. Based on the Coats and Redfern method, kaolin dehydroxylation followed first order reaction model with activation energy of 271.66 kJ/mol and pre-exponential factor of 6.13×10 15 s -1 . The analysis using X-ray diffraction (XRD) dan Fourier Transform Infrared (FTIR) spectroscopy on kaolin after heating at temperature of 550 °C for 3 hours showed that most of the kaolin had turned into metakaolin.

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Alchemy: Jurnal Penelitian Kimia

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