Abstract. Titanium-doped ruthenium catalysts were prepared, characterized, and studied in the vapor-phase selective hydrogenation of crotonaldehyde. The catalysts were prepared by co-impregnation and by the chemical vapor deposition (CVD) method. XPS results indicate that titanium was well dispersed on the support for the catalyst prepared by CVD. Ruthenium dispersion was diminished by tita…
Abstract. Uniform particles of Ni3Ge intermetallic compound (IMC) were prepared inside the pores of MCM-41 mesoporous silica with various mesopore diameters. XRD and TEM revealed that Ni–Ge/MCM-41 thus prepared contained mainly fine metallic particles smaller than the pore size. IR spectra of adsorbed CO suggest the formation of a Ni–Ge IMC, probably Ni3Ge, and the electron transfer fro…