摘要:
An aromatic alkylation process comprising the steps of contacting a hydrocarbon feed comprising an aromatic hydrocarbon with an alkylating agent under liquid phase alkylation condition in the presence of a silica-containing molecular sieve wherein said said catalyst possesses a pore volume of about 0.25-0.50 cc/g in pores having a radius greater than 450 Angstroms and a catalyst particle diameter of not more than about 1/32 of an inch.
摘要:
Gelled fuel compositions having improved burning characteristics comprise a normally liquid petroleum fuel boiling in the range of about 100.degree.-600.degree. F.; a gelling agent; and about 0.5-20 volume percent acetic anhydride.
摘要:
In an aromatic alkylation process, an aromatic hydrocarbon is contacted with an alkylating agent in a reactor vessel in the absence of oxygen in the presence of a silica-containing molecular sieve catalyst under liquid phase alkylation conditions to recover an alkyl-substituted aromatic product from said reactor vessel.
摘要:
Disclosed is a process for the polymerization of olefins wherein olefinic compounds are separated from mixtures containing them with resulting improved utilization of olefinic compounds. Such olefinic compounds are separated by use of membrane separation units and can be recycled to a polymerization zone.
摘要:
There is described an improved membrane-liquid barrier system of the type containing complex-forming, silver-containing ion component in an aqueous solution, and an improved process in which the membrane-liquid barrier combination can be employed to separate olefinically-unsaturated hydrocarbons. The membrane is in contact with an aqueous solution having dissolved therein complex-forming silver-containing ions, and further includes small but effective amounts of hydrogen peroxide to retard reduction of the ionic silver to elemental silver.