【摘 要】
：
Conventional oven drying (COD) and supercritical drying (SCD) methods were applied to the preparation of Mn-substituted hexaaluminate (BaMnAl11O19-α) catalysts
【机 构】
：
Laboratory of Natural Gas Utilization and Applied Catalysis,State Key Laboratory of Catalysis
论文部分内容阅读
Conventional oven drying (COD) and supercritical drying (SCD) methods were applied to the preparation of Mn-substituted hexaaluminate (BaMnAl11O19-α) catalysts. The effect of drying methods on phase composition, specific surface area, pore structure, reduction behavior of Mn3+ ions, and combustion activity of the samples was investigated. The homogenous mixing of the components in the sol-gel process could be maintained by SCD, and the hexaaluminate phase was almost the only phase of the resulting materials after calcination. H2-TPR revealed that the Mn3+ ions in the sample obtained by SCD were easier to be reduced than that by COD. Moreover, the samples obtained by SCD have higher surface area, narrower pore size distribution, and higher combustion activity than those obtained by COD.
其他文献
Fully nonlinear water wave problems are solved using Eulerian-Lagrangian time stepping methods in conjunction with a desingularized approach to solve the mixed
Superparamagnetic poly(styrene-divinylbenzene-glycidyl methacrylate) (Pst-DVB-GMA) microparticles were prepared via a modified suspension polymerization process
The stress distributions of granular flow in a cylindrical hopper with flat bottom are investigated by means of a combined approach of discrete element method (
This paper is concerned with the research on the rational curve for the bucket of a spillway. A new type of rational curve against cavitation damage to spillway
A water wave evolution equation is developed from the combined refraction-diffraction equation on non-uniform current in water of slowly varying topography by u
A network structure of coalmine integrated automation system based on NetLinx was proposed. The features of three-layer-network structure were discussed in deta
The envelope periodic solutions to some nonlinear coupled equations are obtained by means of the Jacobielliptic function expansion method. And these envelope pe
We present a method of realizing anticontrol chaos in a quantum confined system consisting of N two-levelatoms within a cavity, using a time-delayed optic field
Triphenylpyridinium ylid 2, generated by the decarboxylation of betaine 1, were noted to react with acetyl chloride, chloroform or acetone to form addition-elim
Solid complex Zn(Thr)SO4*H2O was prepared in a water-acetone system. Under linearly increasing temperature, the non-isothermal kinetics and the decomposition me