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Nugraha, Reva Edra
Chemical Engineering, Enginering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur. Jalan Raya Rungkut Madya Gunung Anyar, Surabaya, Indonesia, 60249
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Journal : Serambi Engineering

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Sintesis dan Karakterisasi Al-MCM-41 dari Kaolin: Pengaruh Konsentrasi HCl terhadap Struktur dan Kapasitas Adsorpsi Iodin Abdullah, Affan Zein; Putri, Alisyah Ananda; Muljani, Srie; Nugraha, Reva Edra
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Al-MCM-41 can be synthesized using kaolin from Bangka Belitung without requiring additional sources of silica or aluminum. The process begins with calcination of kaolin to produce metakaolin, followed by HCl treatment for dealumination, which helps remove impurities and excess alumina. This step is crucial to achieve the optimal SiO₂/Al₂O₃ mole ratio, making the material effective as an adsorbent or catalyst. The hydrothermal process enhances silica polymerization and pore formation due to the strong electrostatic interactions between CTAB and silicate anions, increasing the pore size. The mesoporous structure and SiO₂/Al₂O₃ ratio of Al-MCM-41 are influenced by the CTAB concentration and the extent of dealumination through HCl treatment. In this synthesis, CTAB acts as a structure-directing agent, forming the hexagonal mesoporous framework, while HCl concentration regulates the removal of alumina from kaolin. To optimize the process, HCl concentrations of 2M, 4M, and 6M were tested to evaluate the extent of alumina and impurity removal. The 6M HCl treatment produced a SiO₂/Al₂O₃ ratio of 25.359, which aligns with the commercial Al-MCM-41 standard from ACS Material. Additionally, the iodine adsorption test demonstrated significantly higher adsorption capacity (653.14 mg/g) for Al-MCM-41 compared to kaolin (76.2 mg/g).
Co-Authors A.R Yelvia Sunarti Abdul Aziz Abdullah, Affan Zein Adinda Yufriza Afandi, Fadila Ardiansyah Aishah Abdul Jalil Aldy Cahya Putra AR Yelvia Sunarti Ardika Nurmawati, Ardika Arifin, Ahmad Zaenal Awanda Winar Fitriana Ayunda Wulan Permatasari Bekti Nugrahadi Bimantara Hidayah Damayanti, Nabilla Didik Prasetyoko Ditta Kharisma Yolanda Putri Dona Avrilia Kristanti Dyah Suci Perwitasari, Dyah Suci Erwan Adi Saputro Fadhila, Dheytra Akhnaz Namira Fadhilah, Rahadyan Itsar Fensia Analda Souhoka Firza Ramadhan Guardiola Rosa Wira Hamzah Fansuri Handi Ramadhan Hayu Nirmala, Cipta Tungga Hellna Tehubijuluw Hellna Tehubijuluw Husna Wardati Islamiyah, Syuaibatul Isna Nugraha Jouvita Rosanti Jovita, Stella Kindriari Nurma Wahyusi Kusuma Wardhani Mas’udah Kusumawati, Yuly Lucky Indrati Utami Luckyana Aini Mei Syella Kurnia Putri Cahyo Mei Syella Kurnia Putri Cahyo Meta Fitri Rizkiana Moch. Harits Pradana Misbach Mohammad Iqbal Mohammad Iqbal Muhammad Abdus Salam Jawwad Muhammad Hakam Murti, Restu Hikmah Ayu Najmi, Naufal Fikri Nandini, Atika Nerissa Arviana Nugroho, Sutra Amelia Nur Aini Fauziyah Nur Aini Fauziyah Nur Aini Fauziyah Nur Aini Fauziyah Nurfauzi, Muchamad Lutfi Putri, Alisyah Ananda Qonita Awliya Hanif Rachmad Ramadhan Yogaswara Ratna Yulistiani Ratna Yulistiani Reswara, Rasendriya Putra Sakinah Sakinah Salshabila, Kirana Aurelia Sani Sani Sholeha, Novia Amalia Silvana Dwi Nurherdiana SRIE MULJANI Subagyo, Riki Sunarti, A.R Yelvia Susianto, Mordekhai Yosep Tahan Simamora Rizaldi Tasya Ambar Aimia Utami, Diana Inas Wahyu Arif Dharmawan Wardhani, Diana Silvia Rahma Wicaksono, Akhmad Permadi Witri Wahyu Lestari Yogaswara, Rachmad Ramadhan Zhafarina, Safira Cecilia Zuhriah Mumtazah