摘要:
A method for isomerizing olefinic hydrocarbons which employs a zinc arsenide catalyst, the arsenide being present in relation to the zinc in a molal ratio between about 0.33 and 3.0.
摘要:
A method for preparing 1,6,8-decatriene by contacting 1,4,9decatriene, in the vapor phase and in the absence of oxygen, with an alumina catalyst. Preferred catalysts are promoted with an alkali metal salt.
摘要:
A METHOD AND CATALYSTS FOR SELECTIVE HYDROGENATION AND ISOMERIZATION WHICH INVOLVES CONTACTING A FEEDSTREAM WITH HYDROGEN AND WITH VARIOUS SUPPORTED CATALYSTS OF MATALLIC ARSENIDES AND ANTIMONIDES, WITH CARBON MONOXIDE BEING OPTIONALLY INTRODUCED INTO THE REACTION AS A MODIFIER.
摘要:
OLEFINS ARE ISOMERIZED WITH RESPECT TO THE POSITION OF THE DOUBLE BOND BY CONTACT WITH A CATALYST COMPRISING A HALOGEN- AND SULFATE-FREE ZIRCONIUM COMPOUND SUPPORTED ON ALUMINA.
摘要:
An improved process for the manufacture of synthetic lubricant additives from olefins having two or three carbon atoms is described. The low molecular weight olefins are converted to internal olefins having 9 to 24 carbon atoms via isomerization and disproportionation. The process utilizes boron trifluoride catalysis with a promoter to produce from the C.sub.9 -C.sub.24 internal olefins oligomer mixtures that have surprisingly low viscosities at low temperatures and surprisingly high viscosity indexes as compared with the oligomers found in other methods. It is important that internal olefins be used almost exclusively in the second step of the method of this invention.
摘要:
A method and catalysts for isomerization which involves contacting a feedstream with hydrogen and with various supported catalysts of metallic arsenides and antimonides, with carbon monoxide being optionally introduced into the reaction as a modifier.