Synthesis and characterization of a new titanium silicoaluminophosphate: TAPSO-37
1998; Elsevier BV; Volume: 23; Issue: 3-4 Linguagem: Inglês
10.1016/s1387-1811(98)00059-6
ISSN1873-3093
AutoresNizamidin Jappar, Yoshinori Tanaka, Shinichi Nakata, Takashi Tatsumi,
Tópico(s)Polyoxometalates: Synthesis and Applications
ResumoTitanium-containing silicoaluminophosphate (TAPSO-37) with the FAU structure has been synthesized hydrothermally. The TAPSO-37 product was extensively characterized by XRD, infrared spectroscopy (IR), UV–visible spectroscopy (UV–Vis), SEM, solid-state NMR spectroscopy and thermogravimetry. Incorporation of Ti into the SAPO-37 framework resulted in no significant change in the distribution of the silicon species. Ti4+ ions were most probably isolated and tetrahedrally coordinated in the framework of SAPO-37 crystals, as evidenced by UV–Vis. The stability of TAPSO-37 was studied in detail from room temperature to 973 K. After removal of the template, the structure of TAPSO-37 was remarkably unstable to moisture.
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