【摘 要】
：
The nanosized zirconia was synthesized via solid state reaction in the presence of surfactant. The results indicate that crystal phase of zirconia can be contro
【机 构】
：
State Key Laboratory of Heavy Oil Processing
论文部分内容阅读
The nanosized zirconia was synthesized via solid state reaction in the presence of surfactant. The results indicate that crystal phase of zirconia can be controlled by tuning the syn- thesis parameters such as OH-/Zr molar ratio, crystallizing temperature and time. It can be trans- formed among amorphous, tetragonal and monoclinic phases. The transformation is driven by particle size. The research shows the nanocrystalline zirconia possesses the higher thermal stability compared with amorphous framework. The "glow exotherm" can be observed for the amorphous samples. Otherwise, it is in the absence for nanocrystalline samples. Herein, the reason for retention of tetragonal zirconia is demonstrated.
其他文献
In this paper the authors use a modified Wirtinger presentation to give a lower bound on the unknotting number of a knot in S3.
A new abietane diterpene 12-hydroxy-7-oxo-5, 8, 11, 13-tetraene-18, 6-abietanolide,together with a new natural sterol stigmasta-7, 22-diene-3β, 5α, 6α-triol
We introduce the bipartite entangled states to present a quantum mechanical version of complex wavelet transform. Using the technique of integral within an orde
In this paper, we find an analytic solution of the master equation of a non-resonant two-photon JaynesCummings model (JCM) with phase damping with the help of t
This article considers a family of 3D-Hartree-type equation with Coulomb potential |x|-1, whose initial data oscillates so that a caustic appears. In the linear
A convenient synthesis of cis-(±) isomer 1 and trans-(±) isomer 2 of lamivudine starting from benzoyloxyacetaldehyde and 1,4-dithiane-2,5-diol is described. T
Novel layered silinaite has been synthesized using an aqueous mixture of water glass,LiOH and NaOH under hydrothermal crystallization. Subsequently transformati
Two new sesquiterpenoid lactones, namely eupalinilides K and L, were isolated from Eupatorium lindleyanum DC. Their structures were determined by spectral metho
The title compound was synthesized and characterized by IR, 1H NMR, elemental analysis and single crystal X-ray diffraction analysis. Its biological activities