In this work, mesoporous spherical γ-AlOOH and γ-Al2O3 particles were rapidly prepared by spray pyrolysis (SP) at different temperatures (400°C–700°C) without the use of template materials. A sol-gel-derived colloidal solution boehmite was ultrasonicated to generate fine droplets, which continuously transferred into a quartz reactor heated specific temperature constant flow N2 gas. Under ultras...

γ-Al(2)O(3) is a well known catalyst support. The addition of Ce to γ-Al(2)O(3) is known to beneficially retard the phase transformation of γ-Al(2)O(3) to α-Al(2)O(3) and stabilize the γ-pore structure. In this work, Ce-doped γ-Al(2)O(3) nanowires have been prepared by a novel method employing an anodic aluminium oxide (AAO) template in a 0.01 M cerium nitrate solution, assisted by urea hydroly...

Agricultural non-point pollution is the biggest source in China from 2009, treatment of agricultural surface runoff very important to mitigate eutrophication rivers and lakes because one key type pollution. In this study, farmland Chengdu Plain was treated for year (2017 ~ 2018) by combination technology new material (waste fir Hemlock sawdust as substrate) bioreactor denitrification Vertical-f...

wettability alteration is one of the most important methods for oil recovery from sandstone andcarbonate reservoirs. the effects of salinity, ph, temperature, and chemicals such as surfactants andfatty acids on the alteration of the wettability were described in previous studies. in recent years,attention has been directed to nanoparticles as a wettability alteration agent. the effect of somena...

The oxidation kinetics of alumina-forming metals can be affected by adding a small amount of a reactive (normally rare earth) element oxide (RExOy) and the segregation of the reactive element (RE) ions to the growing alumina grain boundaries (GBs) has been considered as a responsible reason. However, this interpretation remains a controversial issue as to how RE ions are produced by RExOy which...

We consider the Gamma limit of the Abelian Chern-Simons-Higgs energy

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 innovative collection methodology based on a recently developed supersonic probe enabled the of alumina particulate from exhaust plume sub-scale solid propellant rocket motor and comparison with quench bomb analysis incipient agglomeration. Laser diffraction, scanning electron microscopy, X-ray spectroscopic methods were used to determine particle size, morphology, crystalline nature, elemen...