Characterization Of Modified Bentonite Using Aluminum Polycation = Karakterisasi Bentonit Termodifikasi dengan Polikation Aluminium
ABSTRACT The modification of bentonite by pillarization using aluminum polycation type Keggin [Al 1304(OH)24(H20)1217+ has been carried out, by exchange of cation from interlayer with aluminum polycation. The amount of aluminum polycation, which was used for the pillaring of bentonite was varied, i....
محفوظ في:
| المؤلف الرئيسي: | |
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| التنسيق: | مقال NonPeerReviewed |
| منشور في: |
[Yogyakarta] : Universitas Gadjah Mada
2002
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://repository.ugm.ac.id/17853/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=621 |
| الوسوم: |
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| الملخص: | ABSTRACT
The modification of bentonite by pillarization using aluminum polycation type Keggin [Al 1304(OH)24(H20)1217+ has been carried out, by exchange of cation from interlayer with aluminum polycation. The amount of aluminum polycation, which was used for the pillaring of bentonite was varied, i.e. 5 mmol/gram, 10 mmol/gram, and 20 mmol/gram of bentonite. After drying, the pillared bentonite was calcined at 400 °C for 6 hour with temperature rate of 5 °C/min. The cationic exchange capacity (CEC) of starting bentonite was 98.3 meq/100 gram. The concentration ratio of Al/Si increased from 0.27 to 0.34 for pillared bentonite and of Ca/Si was decreased from 0.06 to 0.006 for pillared bentonite. The basal space for pillared bentonit increased significantly from 7.30 A to about 18 A . The measured specific surface area (by BET) of pillared bentonite was also increased significantly from 46 m2/g to about 162 m2/g. It was concluded that bentonite has been pillared by aluminum polication successfully.
Keywords: aluminum polycation, bentonite |
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