Open AccessSynthesis of silicalite-1 zeolite using silica from elephant grass (Pennisetum purpureum)
Author(s) -
Citra Deliana Dewi Sundari,
Soni Setiadji,
Ade Andriani,
E Sumiyanto,
Atthar Luqman Ivansyah
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1402/5/055064
Subject(s) - zeolite , pennisetum purpureum , scanning electron microscope , materials science , amorphous silica , autoclave , nuclear chemistry , chemical engineering , chemistry , composite material , agronomy , metallurgy , organic chemistry , catalysis , biology , dry matter , engineering
Silicalite-1 is a type of zeolite with no aluminum content and is hydrophobic. This zeolite can be synthesized from various types of silica. Elephant grass ( Pennisetum purpureum ) is one of the potential agricultural wastes that has a fairly high silica content that can be used for zeolite synthesis. In this study, silicalite-1 zeolite was synthesized using silica extracted from elephant grass and tetrapropylammonium bromide (TPABr) templates. Silica samples extracted from elephant grass have 71.91% amorphous SiO2 content. Silicalite-1 zeolite was synthesized with molar ratio of 1SiO2 : 0.527TPABr : 0.395Na2O : 98.45 H2O, using hyrothermal method at 180°C for 24 hours in a stainless steel-teflon lined autoclave. The resulting silicalite-1 samples were confirmed by X-Ray Diffraction (XRD) and showed 2θ which was typical for silicalite-1 i.e. 8.02°, 8.93°, 23.09°, and 23.98°. The results of Scanning Electron Microscopy (SEM) show that silicalite-1 zeolite has hexagonal crystals with 43.36 µm size as a result of the calculation using the Schrerrer method.