This study aims to prepare dealuminated metakaolinite which has a high surface area by using NH4OH as an activator. The natural kaolinite sample was treated at 600 °C for 6 h in order to obtain metakaolinite. A dealuminated metakaolinite was then prepared by the repeated activation method using concentrated ammonia (5 M NH4OH) at room temperature. Depending on the nature of each type of material, natural kaolinite, NH4OH treated kaolinite, metakaolinite and NH4OH treated metakaolinite were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), and Brunauer-Emmett-Teller (BET-N2) measurements. XRD and FTIR results confirmed that structural transformation from kaolinite to metakaolinite had occurred. According to SEM-EDS data, the activation of metakaolinite by NH4OH allowed the dealumination of metakaolinite. The increase in the Si/Al ratio was almost twice as high as in kaolinite. BET-N2 analysis showed that the specific surface area and the total pore volume increased significantly after activation. Its adsorption properties were tested against bixin. Bixin adsorption on dealuminated metakaolinite followed pseudo-second order kinetic where k2 = 0.20 g/mg min. The adsorption isotherm followed the Langmuir model where qm = 0.72 mg/g.
| Published by | Universitas Gadjah Mada |
| Journal Name | Indonesian Journal of Chemistry |
| Contact Phone | - |
| Contact Name | - |
| Contact Email | - |
| Location | Kab. sleman, Daerah istimewa yogyakarta INDONESIA |
| Website | ijc| https://journal.ugm.ac.id/index.php/ijc| |
| ISSN | ISSN : 14119420, EISSN : 24601578, DOI : -, |
| Core Subject | Science, Engineering, |
| Meta Subject | Chemical Engineering, Chemistry & Bioengineering, Chemistry, |
| Meta Desc | Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology and Higher Education (RISTEKDIKTI) No : 21/E/KPT/2018 (in First Rank) and indexed in Scopus since 2012. Since 2018 (Volume 18), Indonesian Journal of Chemistry publish four issues (numbers) annually (February, May, August and November). |
| Penulis | Rahmalia, Winda , Fabre, Jean-Francois , Usman, Thamrin , Mouloungui, Zéphirin |
| Publisher Article | Universitas Gadjah Mada |
| Subtitle Article | Indonesian Journal of Chemistry ARTICLE IN PRESS |
| Scholar Google | http://scholar.google.com/scholar?q=%2Bintitle%3A&… |
| View Article | https://journal.ugm.ac.id/ijc/… |
| DOI | https://doi.org/10.22146/ijc.44706 |
| DOI Number | DOI: 10.22146/ijc.44706 |
| Download Article [1] | https://journal.ugm.ac.id/ijc/article/do… |
| Download Article [2] | http://download.garuda.ristekdikti.go.id… |
Informasi yang terkait dengan PREPARATION OF AMMONIA DEALUMINATED METAKAOLINITE AND ITS ADSORPTION AGAINST BIXIN
The Preparation