A Comprehensive Scenario of the Crystal Growth of 纬-Bi2MoO6 Catalyst during Hydrothermal Synthesis

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• 作者：Chanapa Kongmark ; Rachel Coulter ; Sylvain Cristol ; Annick Rubbens ; Caroline Pirovano ; Axel L枚fberg ; Gopinathan Sankar ; Wouter van Beek ; Elisabeth Bordes-Richard ; Rose-No毛lle Vannier
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：December 5, 2012
• 年：2012
• 卷：12
• 期：12
• 页码：5994-6003
• 全文大小：590K
• 年卷期：v.12,no.12(December 5, 2012)
• ISSN：1528-7505

文摘

In a previous study, we confirmed by in situ combined high-resolution powder diffraction/X-ray absorption spectroscopy and Raman scattering experiments that the crystal formation of the well-known 纬-Bi₂MoO₆ catalyst occurred in two steps through the formation of an intermediate fluorite structure (Kongmark, C. Chem. Commun. 2009, 4850鈭?852; Catal. Today 2010, 157, 257鈥?/span>262). Here, for the first time, by combining these results with complementary ex situ studies (HTXRD, SEM/EDX, Raman scattering), it was possible to elucidate the nature of the intermediate phase and to propose a complete scenario of the growth of 纬-Bi₂MoO₆ crystals. In addition, we performed a kinetic analysis from the three different in situ characterization techniques and confirmed a 2D-diffusion limited growth process.