Catalysis 2011 , 1 , 1549 – 1561 .
“ Production of propylene from 1-butene on highly active “Bi-functional single active site” catalyst: tungsten carbene-hydride supported on alumina ” E. Mazoyer , K. C. Szeto , S. Norsic , A
The combustion reaction was initiated by short-term (1 s) annealing a tungsten coil placed on the top of the sample. Time–temperature distributions in the reacting samples were recorded by BN-coated tungsten–rhenium thermocouples (W/Re-5 and W/Re-20
Authors:A. Janghorban, M. Lomello-Tafin, J. M. Moreau, and Ph. Galez
. The samples were placed in tungsten crucibles applying heating rates of 5 and 10 °C/min. The temperatures of the phase transitions were determined with an accuracy of 5 °C. Because of low kinetics of the peritectic reaction, the equilibrium state
at the reflectance–absorbance wavelength of 276 nm using a tungsten lamp. The scanning speed was 20 mm/s, and the data resolution was a 50 μm/step.
Refining original sample using silica gel column chromatography
Authors:M. Toosi, B. Sabour, T. Hamuleh, and M. Peyrovi
/g and 59.8% to 402 m 2 /g and 47.1% for Mo and 391 m 2 /g and 43.4% for W). That behavior could be related to the partial blockage of zeolite pores due to molybdenum and tungsten deposition on the surface. The results of adsorbed pyridine FTIR have
Authors:Rabia Nazir, Muhammad Mazhar, Tehmina Wakeel, Muhammad J. Akhtar, Muhammad Siddique, Muhammad Nadeem, Nawazish A. Khan, and Muhammad R. Shah
W(2,2′-bipy)Cl 4 complex, complete thermal decomposition resulted in the formation of tungsten carbide under argon atmosphere in the presence of excess of 2,2′-bipy. The zero-valent metal formation also took place in samples where 2,2′-bipy is
Authors:Shaoshi Wen, Zixin Zhang, Xiaopeng Chen, Jinchang Liu, Haiyang Yu, Lifeng Han, Lijun Jin, Yi Zhang, and Tao Wang
precipitate serum proteins at room temperature for 10 min. Then, the mixture was centrifuged for 5 min at 3000 g under 4 °C and the supernatant was added to 100 μL phospho-tungstic acid solution to format tungsten blue by UA. The absorbance was measured at OD