摘要:
Basic carbonate which contains copper and aluminum and is suitable for the manufacture of copper-containing catalysts and which has the general formula Cu.sub.m Al.sub.6 (CO.sub.3).sub.0.5m O.sub.3 (OH).sub.m.sub.+12, where m may be an integer or non-integer between 2 and 6.
摘要:
Basic carbonate which contains copper and aluminum and is suitable for the manufacture of copper-containing catalysts and which has the general formula Cu.sub.m Al.sub.6 (CO.sub.3).sub.0.5m O.sub.3 (OH).sub.m+12, where m may be an integer or non-integer between 2 and 6.
摘要:
In a process for the manufacture of butynediol by the reaction of formaldehyde and acetylene in aqueous solution, in which a catalyst is used which is produced by the action of acetylene and formaldehyde on copper (II) compounds, the catalyst becomes inactive when it is treated for a relatively long period with formaldehyde at elevated temperature in the absence of acetylene so that it must constantly remain in contact with acetylene-containing solution if its temperature is above 70.degree. C.
摘要:
A new catalyst for the manufacture of butynediol from formaldehyde and acetylene, based on a carbonate which contains copper, has the structure of the natural mineral manasseite, also contains magnesium or aluminum or -- in place of aluminum -- iron or chromium and is converted into the catalyst by reaction of the copper ions with acetylene.
摘要:
The invention relates to compounds of formula (I) herein which are reaction products of alkylglycosides with aldehydes and/or diacetals of short-chain alcohols and aldehydes, the acetals obtained being alkoxylated. The invention further relates to a process for producing the above-mentioned compounds and to the use of these compounds for preparing surfactants, especially for industrial detergents and cleaners.
摘要:
A process for the preparation of a hydrogenation catalyst which contains the oxides of the metals nickel, copper, molybdenum and aluminum and/or iron, and may or may not contain manganese oxide, by precipitating a solution of salts of the metals with an alkali metal carbonate at from 35.degree. to 95.degree. C. and a pH of from 5 to 9 and heating the precipitate at from 350.degree. to 700.degree. C., the amount of the metal salts being selected so that the catalyst contains from 5 to 70 percent by weight of aluminum oxide and/or iron oxide, the remainder being principally nickel oxide and, based on nickel oxide, from 20 to 40 percent by weight of copper oxide, from 0.5 to 6 percent by weight of molybdenum oxide and from 0 to 10 percent by weight of manganese oxide.
摘要:
Amines are N-alkylated by reaction with an alcohol or a carbonyl compound in the presence of hydrogen under atmospheric pressure in the gas phase over a catalyst, containing copper and aluminum, which is obtained by heating and reducing a basic precipitate of salts of copper and aluminum.
摘要:
In a method for warning the driver of a motor vehicle in the event of lack of attention, in order to improve the acceptance of such systems among drivers, it is provided to monitor the driver with regard to lack of attention and also to ascertain the instantaneous driving situation of the vehicle, and, if lack of attention of the driver has been determined, to output a warning signal only in certain driving situations, but not in others.
摘要:
Substituted tetrahydropyrrolopyrazine compounds corresponding to formula I a process for producing such compounds; and a method of using such compounds to treat or inhibit various disorders or disease states including pain, depression and anxiety.
摘要:
Substituted tetrahydropyrrolopyrazine compounds corresponding to formula I a process for producing such compounds; and a method of using such compounds to treat or inhibit various disorders or disease states including pain, depression and anxiety.