摘要:
The invention relates to a method for the catalytic hydrogenation of a carbonyl compound, or a mixture of two or more carbonyl compounds, in the presence of a Raney copper catalyst. The Raney copper catalyst is used in nugget form.
摘要:
The invention relates to a method for producing compounds of general formula (I), wherein Rl represents an oxocyclohexyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, or an oxocyclohexenyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, the oxo groups being in the form of an acetal, a ketone, or an enol ether, and R2 represents a hydroxy group or a protective group which can be transformed into a hydroxy group by means of hydrolysis. A compound of general formula (II) is cathodically reduced in a divided or partially divided electrolysis cell at a pH value of between 2 and 9.
摘要:
The invention relates to a method for the catalytic hydrogenation of a carbonyl compound or of a mixture comprised of two or more carbonyl compounds in the presence of a catalyst. Said catalyst comprises an inorganic supporting material containing TiO2, and, as an active component, copper or a mixture of copper with at least one of the metals selected from the group zinc, aluminum, cerium, a precious metal and a metal of subgroup VIII. The invention is characterized in that the copper surface amounts to a maximum of 10 m /g.
摘要:
The invention relates to a method for the catalytic hydrogenation of a carbonyl compound or of a mixture comprised of two or more carbonyl compounds in the presence of a catalyst. Said catalyst comprises an inorganic supporting material containing TiO2, and, as an active component, copper or a mixture of copper with at least one of the metals selected from the group zinc, aluminum, cerium, a precious metal and a metal of subgroup VIII. The invention is characterized in that the copper surface amounts to a maximum of 10 m2/g.
摘要:
An alcohol preparation process is disclosed by catalytic hydrogenation of the corresponding carbonyl compounds at high temperature and pressure in liquid phase. A catalyst is used that contains copper on a SiO2-containing substrate in the presence or absence of one or several elements selected among magnesium, barium, zinc or chromium.
摘要:
The invention relates to a method for the catalytic hydrogenation of a carbonyl compound, or a mixture of two or more carbonyl compounds, in the presence of a Raney copper catalyst. The Raney copper catalyst is used in nugget form.
摘要:
An alcohol preparation process is disclosed by catalytic hydrogenation of the corresponding carbonyl compounds at high temperature and pressure in liquid phase. A catalyst is used that contains copper on a SiO2-containing substrate in the presence or absence of one or several elements selected among magnesium, barium, zinc or chromium.