The direct reductive amination of carbonyl compounds with NH3 and H2 is an alternative route to produce primary amines in practical production. The search for efficient and selective catalysts has attracted great interest. In the present work, the reductive amination of heptaldehyde with NH3 was investigated over a Ru-based catalyst. The product selectivities were found to be related with the s...

The work focuses on evaluating wet air oxidation and catalytic wet air oxidation technique to degrade refinery spent caustics (original COD is 250,781 mg/L) in a milder operation conditions (150-200 ̊C, 0.2-2.5MPa). The results show that: in non-catalyst WAO, the highest COD degradation conversion could reach about 75% when 200 ̊C, 2MPa oxygen and 300rpm were used. At every temperature, the react...

Cobalt catalysts supported on γ-alumina, ceria and γ-alumina-ceria, with 10 or 20%wt of cobalt load, prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission transmission electron microscopy (FETEM), N2 adsorptiondesorption isotherms (BET/BJH methods), energy-dispersive X-ray spectroscopy (EDX), X-ray photoemission ...

Obtaining an atomic-scale description of the chemical interactions phosphates with oxide support, such as γ-Al2O3, is essential to get a rational understanding role phosphate additives for great number heterogeneous catalysts, well improve use this element. Combining cutting-edge Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) techniques Density Functional Theory (DFT)...

Modeling Competitive Adsorption of Molybdate, Sulfate, and Selenate on γ -Al2O3 by the Triple-Layer Model Chung-Hsin Wu,∗ Shang-Lien Lo,∗ Cheng-Fang Lin,∗ and Chao-Yin Kuo†,1 ∗Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei, 106, Taiwan; and †Institute and Department of Labor Relations, Chinese Culture University, 55 Hwa Kong Road, Shih-Lin...

The methods of thermal analysis – thermogravimetry, differential were used to study the catalytic system phosphor-molybdenum heteropoly acid–aluminum oxide. It is shown that modification aluminum oxide has a direct effect on state acid. On surface ƞ-Al2O3, phosphomolybdic acid destroyed by interaction with strong Lewis’s sites carrier, while γ-Al2O3 it retains individuality, probably due multi...

BACKGROUND Methanol to dimethyl ether (MTD) is considered one of the main routes for the production of clean bio-fuel. The effect of copper loading on the catalytic performance of different phases of alumina that formed by calcination at two different temperatures was examined for the dehydration of methanol to dimethyl ether (DME). RESULTS A range of Cu loadings of (1, 2, 4, 6, 10 and 15% Cu...

An in situ technique is employed to tailor the valence states of copper in CuOδ/γ-Al2O3 catalysts with the purpose of inducing superior catalytic performance for simultaneous elimination of NO and CO. The catalyst with zero-valent copper exhibits excellent catalytic performance, which is comparable with the conventional supported noble-metal catalysts.

This work aimed to demonstrate Cu2O/Al2O3 as a catalyst of the photo-Fenton process in UV and visible spectra. Cu2O nanoparticles were synthesized by laser ablation liquid supported on Al2O3. The catalytic activity resulting solid was assessed mineralization bisphenol A (BPA). studied variables type Al2O3α γ, Cu content (0.5 1%), H2O2 concentration (1, 5, 10 times stoichiometric amount). respon...