An unconventional metathesis of ethylene and 2-pentene over Re2O7/SiO2-Al2O3 catalysts has been studied as an alternative route for the production of propylene.
In the run-up to the Beijing 2008 Olympic Games , tourism has more opportunities thanany other industry
In the run-up to the Beijing 2008 Olympic Games, touris
The Tb40(Fe49Co49V2)60 films were fabricated by magnetron cosputtering from a multiple target arrangement at different argon pressures.The samples were investig