水热条件下利用微波加热从粉煤灰合成沸石研究

郭永龙; 王焰新; 蔡鹤生; 杨志华

Volume 28 Issue 5

Sep. 2003

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Article Navigation > Earth Science > 2003 > 28(5): 517-521

GUO Yong-long, WANG Yan-xin, CAI He-sheng, YANG Zhi-hua, 2003. Synthesis of Zeolites from Fly Ash by Microwave Assisted Hydrothermal Alkaline Activation. Earth Science, 28(5): 517-521.

Citation:

GUO Yong-long, WANG Yan-xin, CAI He-sheng, YANG Zhi-hua, 2003. Synthesis of Zeolites from Fly Ash by Microwave Assisted Hydrothermal Alkaline Activation. Earth Science, 28(5): 517-521.

GUO Yong-long, WANG Yan-xin, CAI He-sheng, YANG Zhi-hua, 2003. Synthesis of Zeolites from Fly Ash by Microwave Assisted Hydrothermal Alkaline Activation. Earth Science, 28(5): 517-521.

Citation:

GUO Yong-long, WANG Yan-xin, CAI He-sheng, YANG Zhi-hua, 2003. Synthesis of Zeolites from Fly Ash by Microwave Assisted Hydrothermal Alkaline Activation. Earth Science, 28(5): 517-521.

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Synthesis of Zeolites from Fly Ash by Microwave Assisted Hydrothermal Alkaline Activation

1.
Key Laboratory of Coal Resources, Ministry of Education, China University of Mining and Technology, Beijing 100083, China
2.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

Received Date: 2003-05-18
Publish Date: 2003-09-25

Abstract

Abstract

NaOH water solution is chosen as an original reactant by changing the parameters such as activation temperature, thickness of NaOH water solution and synthesis time. In addition, the fly ash can be heated up and directly crystallized, on the condition of hydrothermal alkaline activation, by using microwave. As a result, three kinds of zeolites are synthesized: laumontite, chabazite and NaP1 zeolites. The ratio of translating fly ash into zeolites is 15%-40%. The research shows the following three results: (1) zeolites can be synthesized for about 15 min, and the best ratio of translating fly ash into zeolites can be achieved for about 30 min. (2) In order to pretest the formation of crystalline nucleus and the growth of crystallize, the ratio of solution and fly ash should be more than 2.5. (3) The heating time should be controlled for about 30 min with the ratio of solution and fly ash 2.5.
- fly ash,
- hydrothermal alkaline activation,
- microwave assisted,
- synthesis of zeolites.

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References(9)

References

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