摘要:
Describes a free flowing particulate composition comprising, in combination, particulate amorphous precipitated silica, e.g., in the form of granules, hydrocarbon process oil, e.g., an aromatic process oil, and organic carboxylic acid having from 2 to 30 carbon atoms, e.g., stearic acid. The hydrocarbon process oil and organic carboxylic acid are sorbed on the silica and are present in amounts sufficient to measurably improve the dispersibility of the particulate amorphous precipitated silica into an elastomer as measured by percent white area. Optionally, an organosilane coupling agent may also be present in said composition. The free flowing particulate composition of the present invention is useful in reinforcing elastomers, e.g., rubbers used in vehicle tires and the soles of athletic foot wear.
摘要:
Amorphous precipitated silica is characterized by a standard white area of less than 0.8 percent. The low standard white area is a characteristic of the silica which is indicative of high (i.e., very effective) dispersion when the silica is incorporated into organic rubber compositions which are cured. Cured organic rubber compositions comprising amorphous precipitated silica exhibit low white areas which indicate high dispersion of the silica in the compositions.
摘要:
A process for cracking high metals content feedstocks which comprises contacting said charge stock under catalytic cracking conditions with a novel catalyst composition comprising a solid cracking catalyst and a diluent containing antimony and/or tin.
摘要:
A process for producing aliphatic amines which comprises reacting an aliphatic alcohol or an aliphatic aldehyde with an aminating agent selected from the group consisting of ammonia, a primary amine and a secondary amine in the liquid phase in the presence of an unsupported catalyst consisting essentially of (1) copper oxide or copper hydroxide (2) nickel oxide or nickel hydroxide, and, optionally, (3) an oxide or an hydroxide of a Group II A metal.
摘要:
A three-component catalyst is prepared comprising a particulate silica adsorbent with boron trifluoride and water adsorbed on the silica. The silica-water-boron trifluoride catalyst is used in hydrocarbon conversion reactions such as the oligomerization of 1-decene to a product predominating in the trimer and tetramer.
摘要:
A process for hydrogenating an unsaturated organic compound which comprises contacting the same with hydrogen in the presence of a catalyst composed of a support containing alumina and aluminum phosphate carrying nickel thereon.
摘要:
An alpha-olefin is oligomerized in the presence of a three-component catalyst comprising a particulate solid adsorbent having boron trifluoride and water adsorbed on the solid adsorbent. For example, 1-decene is oligomerized to a product predominating in the trimer and tetramer using silica as the solid adsorbent.
摘要:
An integrated in situ combustion process for recovering subterranean liquid and solid carbonaceous deposits in which the resulting flue gas of low heating value is combusted at substoichiometric conditions over two different oxidation catalysts in two combustion zones in series and is expanded in a gas turbine which drives the air compressor for injecting the combustion air into the underground carbonaceous deposit. One of the oxidation catalysts comprising platinum and at least one metal cocatalyst selected from Groups IIA and VIIB, Group VIII up through atomic No. 45, the lanthanides, chromium, zinc, silver, tin and antimony is provided to reduce the carbon monoxide in the combusted flue gas.
摘要:
A process for preparing alkyldimethylamines which comprises passing through a fixed bed, containing a copper catalyst and, optionally, chromium oxide, mounted on magnesium aluminate spinel support, dimethylamine and an alcohol or mixture of alcohols.
摘要:
1,3-Dicyanocyclopentane is prepared by the hydrocyanation of 2-cyanocyclopentene in the presence of a catalyst system comprising a zero valent nickel complex, free of carbon monoxide, and a promoting amount of a metal compound such as zinc chloride.