Fabrication of SiO₂ Porous Ceramics from Rice Husk Ash

Abstract:

Porous silica ceramics were prepared from rice husk ash with a small amount of soft clay as workability agent by the in situ combustion pore-forming technique. Then, the effects of the forming pressures on the linear shrinkage, density, porosity, absorption of water and mechanical strength were investigated. The results showed that the pores in the samples consisted of two groups. One was original porous texture from rice husk silica, which ranged from 1-10 μm. The other was formed by burning of carbon and grain packing. Obviously, the greater the forming pressure, the denser the sample. Especially, the amounts of the pores with bigger diameter dropped significantly when the forming pressure was greater than 25KN. Porous ceramics with density 1.07g/cm³ have high porosity and excellent comprehensive properties up to 10MPa.The preparation of porous ceramics utilizing high content rice husk would provide advantages of economical and ecological aspect.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1035-1039
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1035
• Online since: January 2014
• Authors: Hui Chen, Lei Zhao*, Xi Tang Wang, Shu Jing Li, Liang Feng, Zhong Xin Lei
• Keywords: Microstructure, Original Porous Texture, Porous Material, Rice Husk Ash

References

[1] Yang FK., Li CW., Lin YM., Wang CA. Mater. Lett. Vol. 73(2012), p.36.

[2] Andre RS, Urs TG, Elena T, Ludwig JG. J. Am. Ceram. Soc. Vol. 89(2006), p.1771.

[3] Ma QS, Yan M, Chen ZH. Ceram. Int. Vol. 36(2010), p.2269.

[4] TakanoriI W, Akihiro N, Yoshimi K, Toshio T, Mitsunori Y. J. Am. Ceram. Soc. Vol. 26(2006) 2, p.797.

[5] S Chandrasekhar, P.N. Pramada, L Praveen. J Mater Sci. Vol. 40(2005), p.6535.

[6] J. Umeda, K. Kondoh. Industrial Crops and Products . Vol. 32(2010), p.539.

[7] Q. Feng, H. Yamamichi, M. Shoya, S. Sugita. Cem Concr Res . Vol. (2004)34 , p.521.

[8] Carmonaa VB, Oliveirab RM, Silvab WTL, Mattosoa LHC. Marconcini JM. Ind. Crop. Prod. Vol. 43 (2013), p.291.

[9] An DM, Guo YP, Zhu YC, Wang ZC. J. Chem. Eng. Vol. 162( 2010);, p.509.

[10] Zain MFM , Islam MN, Mahmud F, Jamil M. Constr. Build. Mater. Vol. 25(2011), p.798.

[11] Uma RL, Vimal CS, Indra DM, Dilip HL. J. Enviro. Manag. Vol. 90(2009), p.710.

[12] Foo KY, Hameed BH. Adv. Colloid. Interface. Vol. 152(2009), p.39.

[13] Yalcın N, Sevinc V. Carbon. Vol. 38 (2000), p. (1943).

[14] Dalong Yang, Tongxiang Fan, Han Zhou. at el. PLoS ONE, Vol. 6(2011), p. e24788.

[15] Chen B, Wang KQ, Chen XJ, Lu AX . Mater. Lett. Vol. 79(2012), p.263.