Record number :
Title of article :
g-MnO2 nano-sieve membrane: preparation, characterization and reaction studies
Author/Authors :
Lili Zhaoa، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
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Abstract :
g-MnO2 nano-sieve membrane was synthesized using g-MnO2 nanometer powders by suspending particles sintering method. The results of BET, AFM, and SEM indicate that g-MnO2 nano-sieve membrane with a thickness of about 2 mm is porous (pore size 4 nm), and has a smooth surface. The results of XRD and TPR exhibit that the phase transformation which can be suppressed at La/Mn ¼ 0.15, and the activity of oxygen center of g-MnO2 nano-sieve membrane (La/Mn ¼ 0.15) is slightly lower than that of g-MnO2 nanometer powders. g-MnO2 nano-sieve membrane shows a higher separation factor of H2/Ar in the range of 50– 300 8C. In addition, the g-MnO2 nano-sieve membrane was applied to the membrane reactor for cyclohexane oxidative dehydrogenation, and the effect of temperature on cyclohexane conversion was investigated. The result shows that cyclohexane conversion in the g-MnO2 nano-sieve membrane reactor is higher than that in the conventional packed bed reactor
Keywords :
g-MnO2 nanometer powders , Nano-sieve membrane , Suspending particles sintering
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
Link To Document :