Pemanfaatan Rumput Gajah sebagai Sumber Silika untuk Sintesis Zeolit T

Soni Setiadji, Ani Sri Wahyuni, Dede Suhendar, Citra Deliana Dewi Sundari, Atthar Luqman Ivansyah

Abstract


Zeolit T merupakan salah satu tipe zeolit yang digunakan sebagai bahan membran untuk pemisahan gas. Penggunaan silika sebagai prekursor untuk mensintesis zeolit perlu dioptimalkan. Dalam studi ini, sumber silika diperoleh dengan memanfaatkan bahan yang alami, yakni dari rumput gajah. Silika diperoleh dengan cara isolasi dari abu rumput gajah menggunakan NaOH. Silika yang diperoleh dari hasil isolasi rumput gajah memiliki persentase sebesar 71,91%. Zeolit T di sintesis dengan komposisi molar 1 SiO2 : 0,025 Al : 0,15 Na2O : 0,15 K2O : 15 H2O : dan 0,06 TMAOH dengan proses hidrotermal selama 4 hari, yaitu 2 hari pertama pada temperatur 60oC, dilanjutkan 2 hari berikutnya pada temperatur 120 oC. Proses inkubasi tersebut mentransformasi silika amorf menjadi kristal zeolit T. Zeolit yang dihasilkan dikarakterisasi dengan difraksi sinar-X (XRD) untuk mengkonfirmasi terbentuknya zeolit T, spektroskopi inframerah (FTIR) untuk mengkonfirmasi jenis ikatan yang terbentuk dan mikroskop pemindai elektron (SEM) untuk melihat morfologi zeolit T.


Keywords


Kimia Anorganik

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DOI: https://doi.org/10.15575/ak.v4i2.5085