Hydrogenation of crotonaldehyde in a gas phase at atmospheric pressure over Ru/support catalysts was studied. Ruthenium nitrozyloazotane Ru(NO)(NO3)3 and three supports: alfa-Ga2O3 (60.4 m2/g), beta-Ga2O3 (2.2 m2/g) and alfa-GeO2 (3.8 m2/g) were used for catalyst preparation with the nominal ruthenium content 5 wt. % and for the catalysts supported on alfa-Ga2O3 also 2 and 1 wt. %. The row of the catalytic performance of catalysts is as follows: 5 wt.%Ru/alfa-Ga2O3>5wt.%Ru/alfa-Ga2O3>5wt.%Ru/alfa-GeO2. The best catalyst, 5 wt. % Ru/alfa-Ga2O3, shows high selectivity to desired product-crotyl alcohol (above 85%) with the activity ca. 300 mi mol s–1 gRu
Amorphous hydrogenated germanium oxide films (a-GeXOY:H) fabricated by plasma-assisted chemical vapor deposition (PACVD) from a mixture of oxygen and tetramethylgermane in radio-frequency (13.56 MHz) glow discharge, were investigated. Measurements of electrical conductivity and internal photoemission were carried out. It has been found that the films are amorphous insulators (a-I) with the transport gap of 6.7 eV and the conductivity of the order of 10–14 S/m. To characterize the chemical structure of the films, Raman spectroscopy was used. The main structure of the GeO4 type with low concentration of Ge–Ge and Ge–C bonds has been identified.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.