Poled ferroelectric single crystals of 128 Β° Y-cut X-propagation LiNbO 3, 36 Β° Y-cut X-propagation LiNbO 3, and 41 Β° Y-cut X-propagation LiTaO 3 with different electromechanical coupling coefficients were employed as a catalyst substrate for Rayleigh and shear-horizontal leaky surface acoustic waves
Different catalytic activity of a Cu thin film deposited on a positive and negative polar ferroelectric surface
β Scribed by Yasunobu Inoue; Toshihiko Imai; Kazunori Sato
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 255 KB
- Volume
- 160
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
poled single crystal of ferroelectric LiNb03 exposing either the ( -) or ( + ) polar surface was employed as a catalyst support, on which Cu thin films were deposited in thickness range 2.5-IO nm. The catalytic activity for the production of formaldehyde from a CH,OH + O2 mixture was found to higher for the (-) than for the ( + ) polar support in the intermediate thickness range.
π SIMILAR VOLUMES
A surface acoustic wave (SAW) of the Rayleigh-type caused changes in the catalytic activity of a thin Cu film deposited on the SAW propagation path. For ethanol oxidation below 393 K, the catalytic activity increased considerably with SAW on, and the activation energy of the reaction decreased from
Deposition of LiΓMgO catalyst on commonly used supports (containing SiC, etc.) causes a drastic reduction in SiO 2 , Al 2 O 3 , ZrO 2 , HfO 2 , the catalytic activity/selectivity for the oxidative methane coupling reaction and also in both the total and strong surface basicity. The decrease in the