Change of Pore Structure of Oil Shale Particles during Combustion. 2. Pore Structure of Oil-Shale Ash
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- 作者：Xiangxin Han ; Xiumin Jiang ; Zhigang Cui
- 刊名：Energy & Fuels
- 出版年：2008
- 出版时间：March 2008
- 年：2008
- 卷：22
- 期：2
- 页码：972 - 975
- 全文大小：871K
- 年卷期：v.22,no.2(March 2008)
- ISSN：1520-5029
文摘
At present, there is a growing tendency to use low cost, commercially available oil-shale ash as a building material, a chemical filling material, an adsorbent, and so forth. To obtain oil-shale ash with higher porosity, the pore structure of oil-shale ash samples obtained from different combustion modes of oil shale was measured by using a N2 isothermal adsorption/desorption method. The surface morphology of sample particles was photographed by field emission scanning electron microscopy, and their surface fractal dimensions were computed by a simple N2 adsorption isotherm method as well. As a result of a comparison between pore structures of oil-shale ash samples, the oil-shale ash, formed at a fast combustion mode without ash agglomeration occurring, has a larger pore volume and specific surface area because it has more pores and a rougher surface.