𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Fabrication and stabilization of nanocrystalline ordered mesoporous MgO–ZrO2 solid solution

✍ Scribed by Xike Tian; Yanling Zeng; Ting Xiao; Chao Yang; Yanxin Wang; Suxin Zhang

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
782 KB
Volume
143
Category
Article
ISSN
1387-1811

No coin nor oath required. For personal study only.

✦ Synopsis

The crystalline mesoporous MgO-ZrO 2 solid solutions have been fabricated by a simple evaporation induced self assembly procedure with zirconyl chloride octahydrate (ZrOCl 2 Á8H 2 O) and magnesium nitrate tetrahydrate (Mg(NO 3 ) 2 Á4H 2 O) as metal precursors and triblock co-polymer of Pluronic P123 as templating agent. Small-angle X-ray diffraction (SXRD) and transmission electron microscopy (TEM) results showed that ordered mesoporous structure and worm-like mesoporous structure were obtained under different calcine temperatures. Wide angle X-ray diffraction (WXRD) indicated that the formation of homogeneous solid solutions were responsible for the stable tetragonal phase. All MgO-ZrO 2 solid solutions were endowed with strong basicity (H_ = 9.3-12.2) and high water resistance. The Mg 2+ doped into zirconia lattice could stabilize the tetragonal phase and prevent zirconia crystals from excessive growth. This kind of structure could also inhibit basic sites dissolve in water in the reaction and effectively improve the thermal stability of products.

📜 SIMILAR VOLUMES

Synthesis and characterization of ZrO2–M
Synthesis and characterization of ZrO2–MgO solid solutions by citrate gel process
✍ Hasan Gocmez; Hirotaka Fujimori 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 580 KB

The zirconia-magnesia (ZrO 2 -x mol% MgO; x = 3-90) solid solutions were prepared by the citrate gel method. The phase identification and crystallite size of the samples were obtained using X-ray diffraction. Raman spectroscopy was performed to distinguish between cubic and tetragonal phases. The me

Fabrication of Metal Oxides Occluded in
Fabrication of Metal Oxides Occluded in Ordered Mesoporous Hosts via a Solid-State Grinding Route: The Influence of Host–Guest Interactions
✍ Y. M. Wang; Z. Y. Wu; H. J. Wang; J. H. Zhu 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 915 KB

## Abstract Solid‐state grinding is a simple and effective method to include guest species into the channels of ordered mesoporous materials with a different degree of filling. After calcination, a monolayer or several monolayers of guest species can not only form highly dispersed oxide species and