A series of mesoporous carbonaceous materials were synthesized by the nanocasting technique using boehmite as a template and glucose carbon precursor. After pyrolysis removal, resulting material is that can be additionally doped with N, B K during prepyrolysis impregnation. In addition, influence doping on morphology, crystallinity stability carbons was studied X-ray diffraction, nitrogen physi...

The adsorption of citrate, at 10 4_10 -3 M initial concentration, by pseudoboehmite suspended in 0.02 M NaC104 was investigated at varying pH. Citrate shows a strong affinity for the pseudoboehmite surface, as seen in the adsorption isotherm at pH 6. Adsorption envelopes of adsorbed citrate vs. pH for a given initial citrate concentration are characteristic for the adsorption ofa polyprotic aci...

To synthesize vertically aligned carbon nanotube (VA-CNT) arrays longer than a millimeter using chemical vapor deposition (CVD), aluminum oxide buffer has to be deposited on supporting substrates to prevent diffusion and aggregation of catalyst nanoparticles. Currently, reliable deposition has to be made using expensive and time-consuming e-beam evaporation or thermal sputtering. Here, we repor...

This paper systematically studied the pore structure, crystal phase, surface acidity and chemical environment of aluminum boron-doped γ-alumina, by impregnating boron in period boehmite. The nitrogen adsorption, XRD, FTIR etc. technique was used to determine texture, crystallography, acid/base properties coordination. XRD spectrum boria-alumina have no significant change due addition boron. spe...

In this work, boehmite sol was prepared by a previously applied and validated method; hydrolysis of aluminum chloride hexa-hydrate. In order to obtain precise results, the effect of pH after adding precipitating agent, aging time, peptizing temperature and ultrasonic vibration time on the crystallite size of final precipitate were investigated in a narrow range. The preparation conditions appli...