established. However, there are few reports on a direct conversion of bio-ethanol into propylene.
The authors [ 6 ] reported that lanthanum and tungsten modified H-ZSM-5 reduced aromatization and olefin hydrogenation and, as a result, the propylene
for reusing. So it is necessary to study the stability of the heteropolyanion on zirconia as well as the leaching of HPA from the support in order to reuse the catalyst. HPA can be quantitatively characterized by the heteropoly blue (Tungsten blue
Authors:András Bersényi, Erzsébet Berta, István Kádár, Róbert Glávits, Mihály Szilágyi, and Sándor Fekete
Kiersztan, A., Winiarska, K., Drozak, J., Przedlacka, M., Wegrzynowicz, M., Fraczyk, T. and Bryla, J. (2004): Differential effects of vanadium, tungsten and molybdenum on inhibition of glucose formation in renal tubules and hepatocytes of control and
Authors:J. Sempere, R. Nomen, E. Serra, B. Sempere, and D. Guglielmi
laboratories or in the industry, neither quantum dots, nor tungsten nanofibres. An increasing interest of studying nanomaterials using Thermal Analysis is easily detected along last years. Two examples are the study of stability of composites containing
Authors:Y. Sato, H. Mizuno, N. Matsumoto, and Y. Ikegaya
recordings were truncated when the resting potential increased by more than 8 mV from its value at the onset of the recording. LFPs were obtained from the CA1 stratum pyramidale using a tungsten electrode (UEWMGCSEKNNM, FHC, Bowdoin, ME, USA) coated with
Authors:Wei Zhao, Baochun Ma, Yong Ding, and Wenyuan Qiu
decades [ 1 – 3 ]. Among reported alkene epoxidations catalyzed by polyoxometalates, tungsten-based polyoxometalate catalytic systems showed high activity and selectivity. Many groups [ 4 – 20 ] have been involved in this topic in the world. However, most
olefin epoxidation with hydrogen peroxide, have drawn wide attention in the last two decades. Among all the reported polyoxometalates, tungsten-based catalytic systems have shown high efficiency of H 2 O 2 utilization and high selectivity to epoxides
Authors:Viorel Chihaia, Karl Sohlberg, R. Kourieh, S. Bennici, and A. Auroux
specific diffraction peak of WO 3 crystallites (2θ = 23.2°, 23.7°, and 24.3°) has been detected in any of the catalysts.
The surface structure of tungsten oxide and zirconia species on the tungstated zirconia samples was examined by Raman
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