Synthesis and Characterization of Structural, Textural and Catalytic Properties of Several AB&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; (A = Zn&lt;sup&gt;2+&lt;/sup&gt; (Cu&lt;sup&gt;2+&lt;/sup&gt;);B = Al&lt;sup&gt;3+&lt;/sup&gt;, Cr&lt;sup&gt;3+&lt;/sup&gt;) Nanospinels
E-journal of surface science and nanotechnology