日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

The interaction between the alumino-phosphate framework of AlPO₄-34 and the occluded organic molecule has been discussed through the structural analysis of a variety of AlPO4-34s. The F-typed AlPO₄-34 is favored when the organic molecule of piperidine, morpholine, 4-methylimidazole or 1-(2-aminoethyl)piperazine is used as a templating agent. However, the novel OH-type AlPO₄-34 is produced only when 4-methylimidazole is employed. The space group symmetry of the obtained AlPO₄-34 is enhanced by the point symmetry of the organic molecule located in the zeolitic cavity.