Synthesis of micro- and mesoporous aluminosilicates in the presence of polyethylene glycol

Мұқаба

Дәйексөз келтіру

Толық мәтін

Аннотация

Natural and synthetic aluminosilicates currently have a wide range of applications. Silicon-containing wastes of rice production are of great interest as a source of raw materials for their production. The purpose of this work is to synthesize micro- and mesoporous materials from rice husk by templat method using PEG-6000. The obtained samples were investigated by differential thermal analysis and IR spectroscopy, which showed the introduction of PEG into the structure of potassium aluminosilicate during sol-gel synthesis. The specific surface area of the samples and pore size distribution were determined by low-temperature nitrogen adsorption, according to which it was found that the pore radius increased from 100 to 200 Å during sol-gel synthesis when the PEG concentration was changed from 5 to 20 mmol/L. The study of the surface of the samples by scanning electron microscopy showed that the introduction of templat changes their surface morphology and promotes structuring.

Толық мәтін

Рұқсат жабық

Авторлар туралы

O. Arefieva

Far Eastern Federal University; Institute of Chemistry Far-Eastern Branch of the Russian Academy of Sciences

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok; Vladivostok

S. Dovgan

Far Eastern Federal University

Хат алмасуға жауапты Автор.
Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok

A. Kovekhova

Far Eastern Federal University; Institute of Chemistry Far-Eastern Branch of the Russian Academy of Sciences

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok; Vladivostok

A. Panasenko

Institute of Chemistry Far-Eastern Branch of the Russian Academy of Sciences

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok

M. Tsvetnov

Far Eastern Federal University

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok

A. Kozlov

Far Eastern Federal University

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok

K. Pervakov

Far Eastern Federal University

Email: dovgan.sv@dvfu.ru
Ресей, Vladivostok

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Әрекет
1. JATS XML
Жүктеу
2. Fig. 1. Scheme for obtaining potassium aluminosilicate samples in the presence of the structure-controlling agent PEG-6000.

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3. Fig. 2. SEM image of the control sample AL(K)-0.

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4. Fig. 3. SEM images of aluminosilicate samples: a – Al(K)-5; b – Al(K)-5(p).

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5. Fig. 4. SEM images of aluminosilicate samples: a – Al(K)-10; b – Al(K)-10(p).

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6. Fig. 5. SEM images of aluminosilicate samples: a – Al(K)-20; b – Al(K)-20(p).

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7. Fig. 6. Nitrogen adsorption–desorption isotherm at 77 K for the control sample Al(K)-0.

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8. Fig. 7. Nitrogen adsorption–desorption isotherms at 77 K for aluminosilicate samples: a – Al(K)-5; b – Al(K)-5(p).

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9. Fig. 8. Nitrogen adsorption–desorption isotherms at 77 K for aluminosilicate samples: a – Al(K)-10; b – Al(K)-10(p).

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10. Fig. 9. Nitrogen adsorption–desorption isotherms at 77 K for aluminosilicate samples: a – Al(K)-20; b – Al(K)-20(p).

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11. Fig. 10. Differential curve of pore volume distribution by radius of the Al(K)-0 sample.

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12. Fig. 11. Differential curves of pore volume distribution by radius of potassium aluminosilicate samples: a – Al(K)-5; b – Al(K)-10; c – Al(K)-20.

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13. Fig. 12. Differential curves of pore volume distribution by radius of potassium aluminosilicate samples: a – Al(K)-5(p); b – Al(K)-10(p); c – Al(K)-20(p).

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14. Fig. 13. Integral curves of mass loss of potassium aluminosilicate samples.

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15. Fig. 14. Differential curves of temperature change of potassium aluminosilicate samples.

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16. Fig. 15. IR spectra of potassium aluminosilicate samples: 1 – Al(K)-0; 2 – Al(K)-5(p); 3 – Al(K)-10(p); 4 – Al(K)-20(p).

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17. Fig. 16. IR spectra of potassium aluminosilicate samples: 1 – Al(K)-5; 2 – Al(K)-10; 3 – Al(K)-20.

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