@article{oai:kansai-u.repo.nii.ac.jp:00011372,
 author = {村山, 憲弘 and Murayama, Norihiro and 田辺, 満昭 and Tanabe, Mitsuaki and 吉田, 晋輔 and Yoshida, Shinsuke and 山本, 秀樹 and Yamamoto, Hideki and 芝田, 隼次 and Shibata, Junji},
 issue = {3},
 journal = {資源と素材 : 資源・素材学会誌},
 month = {},
 note = {In order to characterize the potassium-chabazite (K-CHA) obtained by hydrothermal synthesis with KOH from coal fly ash, various physical properties such as crystal structure, textures of surface and cross section of particles, cation exchange property, acid-resistance and heat-resistance were investigated for the synthesized K-CHA product.
The particle size of the K-CHA product has a maximum point at 20μ and a shape distribution. The particles of K-CHA consist of unreacted coal fly ash or coagulated fine particles of K-CHA as a nuclear. In case of pH over 4, the X-ray diffraction intensity of K-CHA decreases with a decrease in pH, but K-CHA crystals are not dissolved. On the other hand, K-CHA crystals are dissolved in the aqueous solution of pH below 4. In case of heat treatment below 873K, the X-ray diffraction intensity of K-CHA decreases with an increase in temperature, while the thermal decomposition of K-CHA and production of new crystalline materials do not take place. In the heat treatment of 1,273K, the peaks of K-CHA disappear in the XRD pattern and those of leucite newly generate. The K-CHA product contains about 10% of water and about 3% of unburned carbon.},
 pages = {125--129},
 title = {石炭灰フライアッシュからアルカリ水熱合成されたpotassium-chabaziteの物性評価},
 volume = {119},
 year = {2003}
}