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Journal : Indonesian Journal of Chemistry

Extraction of Alumina from Red Mud for Synthesis of Mesoporous Alumina by Adding CTABr as Mesoporous Directing Agent

Indonesian Journal of Chemistry Vol 18, No 2 (2018)
Publisher : Universitas Gadjah Mada

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Abstract

Mines in Bintan were producing bauxite for many years. The production process of bauxite to alumina produced much red mud. From X-ray Fluorescence (XRF), alumina content on Bintan’s red mud was 28.87 wt.%. This research was studying on the extraction alumina from red mud with reduction of hematite (Fe2O3) and desilication processes. After extraction process alumina was collected about 52.89 wt.%. Synthesis of mesoporous alumina from red mud using sol-gel method at the room temperature for 72 h with cetyltrimethylammonium bromide (CTABr) as mesoporous directing agent. The CTABr/Al-salt ratio, i.e. 1.57; 4.71 and 7.85 with the sample code of AMC-1, AMC-3, AMC-5, respectively. The product was calcined at 550 °C for 6 h. The synthesized materials were characterized by X-ray Diffraction (XRD), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), transmission electron microscopy (TEM), and N2 adsorption-desorption techniques. XRD pattern of AMC-1, AMC-3, and AMC-5 showed that all synthesized materials have amorphous phase. The morphology were wormhole aggregate that were showed by SEM and TEM characterization. N2 adsorption-desorption characterization showed the distribution of pore size of about 3.2 nm. The highest surface area and pore volume were obtained in solid-solid ratio CTABr/GM-AL by 1.57 (AMC-1) i.e. 241 m2/g and 0.107 cm3/g, respectively.

Co-Authors Abidin, Faris Adelina Hasyim Agistiana, Seruni Akhirmen Akhirmen Anastasya, Lidwina Anita Rahmawati Anjarsari, Dwi Indah Ari Estuningtyas, Ari Arif Widiyatmoko, Arif Arisanti, Tiffani Nindya Ashari, . Atni Prawati Bakar, Abdoel Bakhtaruddin Nst. Bambang Sri Anggoro Cahya Mulat, Trimaya Calista Siagian, Irma Denah Suswati Deniswaty, . Desi Areva Dewi Kurniati Dewi, Arum Kusnila Didik Prasetyoko Endang Ernawati Endarwati, Susiani Fadly Azhar Fahmi Medias, Fahmi Fatchurohman, Fatchurohman Feriadi Feriadi, Feriadi Haeriah, . Halida . Hamdani . Hariani, Lilik Sri Hasan, Sholeh Hasmin Tamsah, Hasmin Hermi Yanzi Heru Pramono HJ Freisleben, HJ Isa Akhlis Kalanjati, Woro Wulandari Kamaluddin, Muhammad Totong Katrin Katrin Komara, Adi Komarudin Komarudin Kumar, Abdul Malik Kurniasari, Nova Laksmi Widajanti Linda Masniary Lubis Lulus Irawati, Lulus M. Syukri Mamik Sarwendah Mangiliwati Winardi, Mangiliwati Melda Agarina Mujiatun, . Mulawarman Mulawarman Munaris Munaris Munstermann, Susanne Mun’im, Abdul Nanik Setiyawati, Nanik Nugraha, I Ketut Destian Nugraismia, Wilda Nur Annis Hidayati, Nur Annis Nurhayati Damiri Nurliza Nurliza Ochi Marshella Febriani Parisa, Nita Perryanis, Perryanis Prastanti, Hestu Puji Harto Putri, Rahmah Dianti Qurotaayunina, Yasmin Rahmat Hidayat Rahmiati Rahmiati Raja Muhammad Amin Ramdhani, Eka Putra Rani Mega Putri Ridwan Affandi rini hazriani Rosalina, Linda Santi Purna Sari Sentosa Ginting Silitonga, Risma Juniarti Paulina Sinanto, Agus Siti Fatimah Pradigdo Soni Kurniawan Sri Ayem, Sri Sri Lestari Sriyanto, . Subagyo, Tutut Suciati Sudarisman Sulistiono, nFN Sumartono, Fareza Ferdyna Nanda Suprapto Suprapto Suyanto Suyanto Taupik Rahman Tedi Rusman Tomo Djudin Tri Karyono Tri Noor Aziza Triyanto Pristiwaluyo Wahyu Ardianto Werdiningsih, Sri Werner R. Murhadi Widuri, Anggita Yatim Lailun Ni’mah Yaya Sukaya Yeni Agustin Yuliana, Citra Yuliarni Yuliarni Zaenuddin, Nuryani