SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT
The synthesis and characterization of SiO2-Al2O3/bentonite composites was prepared through the intercalation and pillarization of the interlayer of Na-bentonite with SiO2-Al2O3 mixed oxide sol particles. The silica-Alx(OH)y sol solution was prepared by titrating an Al3+ aqueous solution with NaOH in...
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| Format: | Thesis |
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[Yogyakarta] : Universitas Gadjah Mada
2013
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| _version_ | 1826046081390084096 |
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| author | , ruslan , Prof. Dr. Karna Wijaya, M.Eng |
| author_facet | , ruslan , Prof. Dr. Karna Wijaya, M.Eng |
| author_sort | , ruslan |
| collection | UGM |
| description | The synthesis and characterization of SiO2-Al2O3/bentonite composites was
prepared through the intercalation and pillarization of the interlayer of Na-bentonite
with SiO2-Al2O3 mixed oxide sol particles. The silica-Alx(OH)y sol solution was
prepared by titrating an Al3+ aqueous solution with NaOH in the presence of silica sol
particles. It was then slowly added to a suspension of Na-bentonite and then the
mixture was stirred and heated at 60 oC allowed to react for 3 hours. Finally, the solid
was washed, dried and followed by calcined at 250 oC for 5 hours. Calcined product
was then characterized to determine the chemical compound (i.e. Na, Ca, Si and Al),
basal spacing, morphology, specific surface area, porosity, and surface acidity. To
test its high thermal stability, the composite were calcined at 350, 450 and 550 oC for
5 hours. The test of the its acid stability, the composite were dispersed into solution
of hydrochloric acid with various concentration, i.e. 1, 3 and 5 M for 24 hours.
The results indicated that the intercalation and pillarization of SiO2-Al2O3
mixed oxide sol particles into the interlayer of Na-bentonite produced SiO2-
Al2O3/bentonite composites with basal spacing d001 of about 0.99 nm. Its structure
was obtained the meso-micropore which micropore size produced by pillared
structure and mesoporous size produced by exfoliated or delaminated structure. The
pillarization of SiO2-Al2O3 oxide increased the physico-chemical properties of
bentonite such as surface acidity increased from 0.46 mmol/g to 2.01 mmol/g,
specific surface area increased from 54.93 m2/g to 71.26 m2/g, average pore radius
increased from 6.86 nm to 8.02 nm, total pore volume increased from 0.18 mL/g to
0.28 mL/g and thermal stability up to 550 oC. The acid treatment to the composites
did not distore the (001) planes of bentonite. |
| first_indexed | 2024-03-13T22:47:39Z |
| format | Thesis |
| id | oai:generic.eprints.org:118779 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T22:47:39Z |
| publishDate | 2013 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:1187792016-03-04T08:45:04Z https://repository.ugm.ac.id/118779/ SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT , ruslan , Prof. Dr. Karna Wijaya, M.Eng ETD The synthesis and characterization of SiO2-Al2O3/bentonite composites was prepared through the intercalation and pillarization of the interlayer of Na-bentonite with SiO2-Al2O3 mixed oxide sol particles. The silica-Alx(OH)y sol solution was prepared by titrating an Al3+ aqueous solution with NaOH in the presence of silica sol particles. It was then slowly added to a suspension of Na-bentonite and then the mixture was stirred and heated at 60 oC allowed to react for 3 hours. Finally, the solid was washed, dried and followed by calcined at 250 oC for 5 hours. Calcined product was then characterized to determine the chemical compound (i.e. Na, Ca, Si and Al), basal spacing, morphology, specific surface area, porosity, and surface acidity. To test its high thermal stability, the composite were calcined at 350, 450 and 550 oC for 5 hours. The test of the its acid stability, the composite were dispersed into solution of hydrochloric acid with various concentration, i.e. 1, 3 and 5 M for 24 hours. The results indicated that the intercalation and pillarization of SiO2-Al2O3 mixed oxide sol particles into the interlayer of Na-bentonite produced SiO2- Al2O3/bentonite composites with basal spacing d001 of about 0.99 nm. Its structure was obtained the meso-micropore which micropore size produced by pillared structure and mesoporous size produced by exfoliated or delaminated structure. The pillarization of SiO2-Al2O3 oxide increased the physico-chemical properties of bentonite such as surface acidity increased from 0.46 mmol/g to 2.01 mmol/g, specific surface area increased from 54.93 m2/g to 71.26 m2/g, average pore radius increased from 6.86 nm to 8.02 nm, total pore volume increased from 0.18 mL/g to 0.28 mL/g and thermal stability up to 550 oC. The acid treatment to the composites did not distore the (001) planes of bentonite. [Yogyakarta] : Universitas Gadjah Mada 2013 Thesis NonPeerReviewed , ruslan and , Prof. Dr. Karna Wijaya, M.Eng (2013) SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT. UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=58755 |
| spellingShingle | ETD , ruslan , Prof. Dr. Karna Wijaya, M.Eng SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title | SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title_full | SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title_fullStr | SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title_full_unstemmed | SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title_short | SINTESIS DAN KARAKTERISASI KOMPOSIT SiO2-Al2O3/BENTONIT |
| title_sort | sintesis dan karakterisasi komposit sio2 al2o3 bentonit |
| topic | ETD |
| work_keys_str_mv | AT ruslan sintesisdankarakterisasikompositsio2al2o3bentonit AT profdrkarnawijayameng sintesisdankarakterisasikompositsio2al2o3bentonit |