Sintesis Magnesium Oksida Menggunakan Metode Logam – Terlarut Asam

Diana, Dien Rosma (2015) Sintesis Magnesium Oksida Menggunakan Metode Logam – Terlarut Asam. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah dilakukan sintesis MgO dengan metode logamterlarut asam dan penambahan 2 jenis polietilen glikol (PEG), yaitu PEG400 dan PEG1000. Serbuk murni Mg digunakan sebagai bahan dasar yang dilarutkan dalam HCl 37% untuk menyiapkan sampel tanpa PEG (MgONP) dan beberapa sampel lain disiapkan dengan menambahkan PEG400 (MgOP4) dan PEG1000 (MgOP10). Bahan–bahan dasar dicampur dengan cara diaduk selama 1 jam pada temperatur kamar, lalu dikeringkan pada temperatur 80°C. Serbuk yang telah dikeringkan diuji dengan DTA-TGA untuk mengetahui fenomena termal dari sampel yang digunakan sebagai dasar memilih temperatur kalsinasi. Temperatur kalsinasi yang digunakan adalah 400, 500, 600, 700 dan 800°C. Serbuk-serbuk terkalsinasi dikarakterisasi menggunakan XRD dan, secara umum, diketahui bahwa fasa-fasa yang terbentuk adalah periklas dan bikosfit. Analisis komposisi fasa menunjukkan bahwa penambahan PEG mempengaruhi terbentuknya fasa periklas, secara umum fasa periklas terbentuk pada temperatur 600°C tetapi pada MgOP4 dan MgOP10 pada temperatur 600°C terdapat fasa biskosfit. Analisis data difraksi lanjutan untuk estimasi ukuran kristal menunjukkan bahwa ukuran kristal periklas rata-rata adalah 98-119nm dan biskosfit 90nm untuk berbagai temperatur kalsinasi. Sementara itu distribusi ukuran kristal pada sampel dengan penambahan PEG lebih homogen daripada sampel tanpa penambahan PEG. ====================================================================================================== The synthesize of MgO has been carried out by using the dissolved-metal mixing method and with the addition of two types of polyethylene glycol (PEG), i.e. PEG400 and PEG1000. Pure Mg metal powder was prepared as the raw material which was dissolved in 37% HCl (namely MgONP) and two other samples were prepared by adding PEG400 (namely MgOP4) and PEG1000 (namely MgOP10). The raw materials were mixed by stirring for 1 hour at room temperature, then dried at a temperature of 80°C. The dried powder was tested by DTA-TGA to determine the thermal phenomena of the sample used as the basic of selecting the calcination temperature, which were 400, 500, 600, 700, and 800°C. The calcined powders were characterized using XRD and, in general, it is known that the phases formed are periclase (MgO) and bischosfite. The analysis of phase composition indicated that the addition of PEG influenced the formation of periclase. In general, periclase was formed at a temperature of 600°C, but in MgOP4 and MgOP10 samples sintered at 600°C, bischosfite was found. Further analysis of diffraction data to estimate the size of the crystals showed that the periclase crystal size was in the range of 98-114 nm and bischosfite was constant at around 90 nm for various calcination temperatures. Meanwhile, the periclase crystal size distribution in the samples with the addition of PEG is more homogeneous than those without the addition of PEG.

Item Type: Thesis (Undergraduate)
Additional Information: RSFi 541.39 Dia s
Uncontrolled Keywords: MgO, periklas, biskosfit, metode logam-terlarut asam, PEG
Subjects: Q Science > QC Physics
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 17 May 2018 02:19
Last Modified: 17 May 2018 02:19
URI: http://repository.its.ac.id/id/eprint/51893

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