A novel preparation method for porous noble metal/ceramic catalytic membranes
作者： Hongbin Zhao , Anwu Li , Jinghu Gu , Guoxing Xiong , H. Brunner
关键词: Noble metal 、 Chemical engineering 、 Materials science 、 Boehmite 、 Adsorption 、 Mineralogy 、 Mesoporous material 、 Sol-gel 、 Membrane 、 Ceramic 、 Transition metal
摘要: Adsorption at liquid/solid interface has been explored to prepare catalytically active ceramic membranes. Boehmite sol maintains its dynamic stability in the pH range of 3.5–4. metal salt on particles can only be performed above range, but adsorption still optimized by proper choice ligand. Therefore, effect ligands (NH3, Cl−, EDTA) noble ions (Pd(II), Pt(II), Pt(IV) and Rh(III)) as a function γ-Al2O3 was studied. Thus complexes which significantly adsorb were found. Using complexes, ion modified boehmite sols synthesized. Then sol-gel process, porous metal/ceramic cataytic membranes prepared. The further characterized N2 adsorption-desorption, scanning electron microscopy (SEM), transmission (TEM) SEM-WDX (wave dispersion X-ray). H2 permeation through these elevated temperatures also measured. Based experiments, novel technique produce mesoporous without any defects with uniform materials coating.
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