Hydrothermal solidification of green tuff / tobermorite composites
Hydrothermal solidification of green tuff / tobermorite composites
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DOI：
10.2109/jcersj2.117.1221
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发表时间：
2009-11
影响因子：
1.1
通讯作者：
Midori Takagi;H. Maeda;E. H. Ishida
中科院分区：
文献类型：
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作者：
Midori Takagi;H. Maeda;E. H. Ishida
以绿色凝灰岩废弃物和消石灰为原料，采用水热法制备了中孔绿色凝灰岩/雪硅钙石复合材料。XRD结果表明，水热处理后，导致绿色凝灰岩呈绿色色的主要矿物矿物-水铝石残留下来。雪硅钙石是绿色凝灰岩中固有的石英与熟石灰反应的结果。雪硅钙石的形成导致抗弯强度的增加，在水热处理10 h后达到12 MPa，以及比表面积和中孔体积的增加。该复合物比废弃的绿色凝灰岩吸附更大量的水蒸气和氨气。
Mesoporous green tuff / tobermorite composites were synthesized by hydrothermal treatment of powder compacts consisting of waste green tuff and slaked lime. XRD results showed that chlorite, the mineral responsible for the green coloration of green tuff, remained after hydrothermal treatment. Tobermorite formed as a result of a reaction between the quartz inherent in green tuff and slaked lime. The formation of tobermorite led to an increase in bending strength, reaching 12 MPa after 10 h of hydrothermal treatment, as well as to an increase in specific surface area and mesopore volume. The composite adsorbed a greater quantity of water vapour and ammonia gas than waste green tuff.