Dealuminasi Zeolit Alam Cipatujah Melalui Penambahan Asam dan Oksidator

Sriatun Sriatun; Adi Darmawan

doi:10.14710/jksa.8.2.55-60

DOI: https://doi.org/10.14710/jksa.8.2.55-60

Dealuminasi Zeolit Alam Cipatujah Melalui Penambahan Asam dan Oksidator

Sriatun Sriatun

, Adi Darmawan

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Published: 1 Aug 2005.

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Abstract

Sampai saat ini zeolit tetap menjadi primadona sebagai bahan penapis molekuler atau adsorben. Umumnya zeolit alam perlu diberi perlakuan tertentu bila akan digunakan sebagai adsorben, karena rasio Si/Al rendah dan mengandung unsur-unsur pengotor yang harus diminimalkan pengaruhnya. Oleh karena itu perlu dilakukan dealuminasi. Salah satu metode dealuminasi adalah pengasaman dan untuk memaksimalkannya ditambah dengan oksidator KMnO₄.

Prosedur kerja penelitian ini meliputi dealuminasi zeolit alam Cipatujah menggunakan H₂SO₄ dan HCl serta ditambah dengan oksidator KMnO₄. Selanjutnya dilakukan karakterisasi terhadap zeolit sebelum dan sesudah perlakuan dealuminasi menggunakan spektrofotometer inframerah (IR), difraktometer sinar-x (XRD) dan spektroskopi serapan atom (AAS).

Dari hasil interpretasi terhadap data spektra inframerah maupun difraktogram XRD menunjukkan bahwa zeolit alam yang digunakan termasuk jenis mordenit. Dari data penentuan kadar unsur menggunakan AAS diperoleh hasil bahwa pada dealuminasi menggunakan H₂SO₄ dan KMnO₄ mampu menaikkan rasio Si/Al dari 2,852 menjadi 11-12. sedangkan dengan menggunakan HCl rasio Si/Al naik menjadi 9,945.

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Keywords: dealuminasi; zeolit alam; pengasaman; oksidator

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Section: Research Articles

Language : ID

In Vol 8, No 2 (2005): Volume 8 Issue 2 Year 2005

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