Results 221 to 230 of about 101,875 (254)

A Mechanistic Study of Methanol Decomposition over Cu/SiO2, ZrO2/SiO2, and Cu/ZrO2/SiO2

Journal of Catalysis, 1999
Abstract The interaction of methanol with Cu/SiO 2 , ZrO 2 /SiO 2 , and Cu/ZrO 2 /SiO 2 has been investigated by in situ infrared spectroscopy and temperature programmed desorption and reaction with the aim of understanding the nature of the species and the mechanism involved in methanol decomposition.
Ian A. Fisher, Alexis T. Bell
openaire   +1 more source

Raman spectra and structure of BaOSiO2 SrOSiO2 and CaOSiO2 melts to 1600°C

Chemical Geology, 1995
Abstract Raman spectra were collected for barium silicate, strontium silicate and calcium silicate melts at temperatures ranging from the glass transition region to temperatures as high as 1600°C. For melts less polymerized than disilicate, the spectra were used to determine the relative abundances of the Q3, Q2 and Q1 tetrahedra and the Si2O52 ...
John D. Frantza, Bjorn O. Mysen
openaire   +1 more source

Rheological behaviour of solutions affording SiO2 and SiO2/ZrO2 fibers

Journal of Non-Crystalline Solids, 1991
Abstract The rheological behaviour of solutions composed of silicon ethoxide (TEOS) or of TEOS and zirconium propoxide (TPOZ) in various ratios are studied as a function of hydrolysis conditions, concentration of acetylacetone, addition of dimethyldiethoxysilane (DEDMS) and nature of solvent.
Carturan, Giovanni, Sorarù, Gian Domenico, U. Brenna   +2 more
openaire   +2 more sources

TDDB Measurements of SiO2 Gate and SiO2/Si3N4/SiO2 Gate Structure

Extended Abstracts of the 1985 International Conference on Solid State Devices and Materials, 1985
J. Mitsuhashi, K. Sugimoto, M. Hirayama, S. Sadahiro, T. Matsukawa   +4 more
openaire   +1 more source

Phase-Change Composites Composed of Silicone Rubber and Pa@SiO2@PDA Double-Shelled Microcapsules with Low Leakage Rate and Improved Mechanical Strength

ACS Applied Materials & Interfaces, 2021
, Zhijian Yang, Quan-Ping Zhang
exaly  

Hydrogen chemisorption and mobility on Ru/SiO2, K/Ru/SiO2 and Ru-Ag/SiO2

1996
Abstract Microcalorimetry and 1 H NMR have been used to investigate hydrogen chemisorption on Ru/SiO 2 , K/Ru/S1O 2 and Ru-Ag/SiO 2 . Adding small amounts of K or Ag to Ru/SiO 2 significantly reduces the amounts of hydrogen adsorbed and eliminates intermediate (~50 kJ/mole) as well as weakly bound states ( 2 .
openaire   +1 more source

Evaporation behavior of SiO 2 glass doped with various transition metal oxides

Journal of the American Ceramic Society, 2021
Hejun Li, Chunyu Cheng
exaly  

Green synthesis of SiO2 from Equisetnm arvense plant for synthesis of SiO2/ZIF-8 MOF nanocomposite as photocatalyst

Journal of Coordination Chemistry, 2023
Masoud Mokhtary, Babak Sadeghi, Afshin Pourahmad   +2 more
exaly  

Multifunctional SiC@SiO2 Nanofiber Aerogel with Ultrabroadband Electromagnetic Wave Absorption

Nano-Micro Letters, 2022
Yongqiang Chen, Fan Bingbing, Yanqiu Zhu   +2 more
exaly  

Uptake and Translocation of Mesoporous SiO2-Coated ZnO Nanoparticles to Solanum lycopersicum Following Foliar Application

Environmental Science & Technology, 2021
Subhasis Ghoshal, Xiaoyu Gao, Vinicius Bueno   +2 more
exaly