Effect of Synthesis Conditions on Selective Formation of SAPO-5 and SAPO-34

• Published in: Inorganic and nano-metal chemistry Vol. 44; no. 1; pp. 79 - 83
• Main Authors: Valizadeh, Bardiya, Askari, Sima, Halladj, Rouein, Haghmoradi, Amin
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 02.01.2014; Taylor & Francis Ltd
• Subjects: Aluminum phosphate; High temperature; hydrothermal synthesis; Materials selection; Nanocomposites; Nanomaterials; Nanostructure; SAPO-34; SAPO-5; Scanning electron microscopy; selective formation; Silicoaluminophosphates; Silicon; Synthesis; synthesis conditions
• ISSN: 1553-3174; 2470-1556; 1553-3182; 2470-1564
• DOI: 10.1080/15533174.2013.768646

Silicoaluminophosphates (SAPO) are an important class of microporous materials that may possess Brønsted acidic sites with the substitution of Si into the neutral framework of AlPO 4 -n. In this work, SAPO-5 and SAPO-34 were synthesized using hydrothermal method and effect of synthesis parameters on selective formation of SAPO-5 and SAPO-34 were investigated. The products were characterized by XRD, FTIR, and SEM. It is found that high temperature is a favorable condition for SAPO-34 formation because it is thermodynamically much more stable than SAPO-5. Amount of template had a dominant effect on final product phase, for which specific phase can synthesize by large concentration.