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All Journal JURNAL SAINS PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Saddam Husin
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Electrical & Electronics Engineering Energy Physics Other

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Karakterisasi Geopolimer Semen Berbasis Terak Feronikel dari Antam Pomala dengan FTIR Saddam Husin
SAINS : Jurnal Kimia & Pendidikan Kimia Vol 10, No 1 (2021): EDISI JUNI 2021
Publisher : PKimia FKIP Universitas Halu Oleo

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Abstract

Portland cement production produces 1 tonne of CO for every tonne of cement produced. The increasing release of CO2 can cause an increase in the greenhouse effect and environmental damage. Slag, which is a residual material from the smelting of ferrous and non-ferrous minerals in a blast furnace, has the main composition of silica (SiO) and lime (CaO) which can be used as a substitute for conventional cement as a cement geopolymer. Geopolymers are obtained through geopolymerization reactions. Geopolymerization involves a chemical reaction between a solid aluminosilicate material and an alkaline solution. In this study, geopolymer cement was obtained by reacting a mixture of ferronickel slag (Fe-Ni) with various particle sizes of 106, 90, 75 and 63 m mixed with an alkaline solution (NaOH 7 molar and Na2SiO3 with a ratio of Na2SiO3/NaOH = 2.5). The mixture was molded into cubes with dimensions of 50x50x50 mm3 and allowed to stand for 2 days and then in the oven (80oC, 24 hours). Furthermore, the characterization and testing of the physicalmechanical properties of the geopolymer was carried out. Based on the results of the study the content of oxide compounds in the form of SiO (43.07%), and Al2O3 (9.13%). The FTIR spectra show SiO4 bending vibrations (500-620 cm) and SiO4 stretching (830-1010 cm) where an increase in absorbance at a wavelength of 868 cm indicates the formation of geopolymers, the formation of a new absorption peak of 1419 cm in the form of CO3 2- asymmetry.
NATURAL ZEOLITE ACTIVATION AND ZAA/Ni CATALYST SYNTHESIS USING THE WET IMPREGNATION METHOD: AKTIVASI ZEOLIT ALAM DAN SINTESIS KATALIS ZAA/Ni MENGGUNAKAN METODE IMPREGNASI BASAH Elsa Regita Hutami; Esmar Budi; Saddam Husin; Dita Adi Saputra; Muhammad Dikdik Gumelar
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA30

Abstract

Zeolite has been widely used as a heterogeneous catalyst in catalytic cracking reactions. The role of zeolite as a catalyst depends on the amount and site of acid present on the surface of the catalyst. The imposition of nickel metal on the pores of zeolite can increase the surface area of the catalyst, which allows more reactant molecules to interact with the active site, thereby increasing the selectivity of the product. This study aims to study the process of natural zeolite activation and the manufacture of catalysts made from nickel-impregnation active natural zeolite consisting of BET and XRF characteristics. The zeolite used in this study is natural zeolite from Sukabumi. The catalyst variations used are activated natural zeolite with H2SO4 (ZAA) and ZAA/Ni with a nickel concentration of 2%. The type of nickel used is NiSO4 MHP (Mixed Hydroxide Precipitate) 2%. The results of the study showed an increase in the surface area of natural zeolite from 61.59 m2/g to 91.72 m2/g. Activation of zeolite using sulfuric acid has succeeded in reducing the impurity elements contained in natural zeolites such as Na, K, Cl, Mg and Fe. Nickel that has been successfully impregnated into zeolite pores by 0.30% in the ZAA/Ni catalyst.
Co-Authors Dita Adi Saputra Elsa Regita Hutami Esmar Budi Muhammad Dikdik Gumelar