Abstract:
A catalyst comprising Sb-Ni-Mo has been found to be very selective, stable and long-lasting in the conversion of butane to maleic anhydride. Other metals such as Co, Cu, or Zn may be substituted for Ni with like results. An improved method for preparing this catalyst is also provided herein.
Abstract:
Methylnaphthalenes are obtained from a hydrocarbon mixture boiling within the range of 375* to 600*F containing alkylnaphthalenes and non-naphthalenes by distilling the hydrocarbon mixture to a boiling range of 460*-530*F and then treating this narrow boiling range fraction with a furfural extraction.
Abstract:
N-alkyl amides may be formed by reacting aliphatic peroxides or hydroperoxides with aliphatic or aromatic nitriles in a solution of a strong acid and an alcohol.
Abstract:
1. A PROCESS FOR SEPARATING TWO STRUCTURALLY SIMILAR CYCLIC AROMATIC HYDROCARBONS CONTAINING IN THE RANGE OF 1-4 AROMATIC RINGS, AND IN THE RANGE OF 8-36 CARBON ATOMS AND WHEREIN SAID AROMATIC HYDROCARBONS CONTAIN AT LEAST ONE CONDENSED RING, SAID PROCESS COMPRISING: (A) CONTACTING A FLUID FEED MIXTURE COMPRISING SAID CYCLIC AROMATIC HYDROCARBONS WITH A SOLID ABSORBENT COMPRISING A PARTIALLY DEHYDRATED, SUBSTANTIALLY CRYSTALLINE ALUMINO-SILICATE ZEOLITE HAVING A CRITICAL PORE DIAMETER GREATER THAN ABOUT 6A, THE RATIO AL/SI OF THE ALUMINO- SILICATE FRAMEWORK OF THE ZEOLITE BEING IN THE RANGE OF 0.65-0.2, THE ZEOLITE HAVING BEEN PARTIALLY DEHYDRATED BY EXPOSURE TO A TEMPERATURE IN THE RANGE OF 80-300* C., WHEREBY THERE IS OBTAINED A RICH ADSORBENT CONTAINING AN ADSORBATE WHICH IS RICHER IN ONE SAID CYCLIC AROMATIC HYDROCARBON THAN WAS SAID FLUID FEED MIXTURE, AND A RAFFINATE PRODUCT WHICH CONTAINS LESS OF THE ONE SAID CYCLIC AROMATIC HYDROCARBON THAN DID SAID FLUID FEED MIXTURE; (B) SEPARATING SAID RAFFINATE PRODUCT FROM SAID RICH ADSORBENT AND, (C) REMOVING THE ONE SAID CUCLIC AROMATIC HYDROCARBON FROM SAID RICH ADSORBENT.
Abstract:
A process for conversion of a feed consisting essentially of an alkyldecalin or an alkyltetralin (or a non-equilibrium mixture thereof) comprises contacting the feed with an alumino-silicate zeolite containing polyvalent metal cations in exchange positions, the contacting being at a temperature in the range of 100-350*C., liquid hourly space velocity in the range of 0.25 to 10 and a pressure in the range of 15 to 1500 psig.
Abstract:
New ethylene-propylene copolymer oils containing 29-71 mol percent ethylene, the rest being at least substantially entirely propylene, said oils being of rich viscosity index, low pour point, and high stability, are produced from monoolefin mixtures containing ethylene and propylene employing specified vanadiumaluminum or titanium-aluminum Ziegler-type catalyst systems. Hydrogen under pressure is used with the vanadium-aluminum catalyst system to control molecular weight. Oils of lubricating oil viscosity can be produced directly, or after cracking higher molecular weight oil, said cracking usually, but not necessarily, followed by hydrogenating. Dewaxing can be employed to reduce pour point.
Abstract:
A process for the catalytic acid hydrolysis of an aromatic or heterocyclic nitrile to acid by feeding an aqueous solution of the nitrile and acid catalyst to a reflux reactor held at a temperature and pressure to maintain liquid reflux conditions whereby hydrolysis of nitrile occurs and the ammonium salt of the acid catalyst which forms pyrolyzes to amide, distilling off vapors of said catalyst and the amide of said catalyst, and separating from said reactor aromatic acid or heterocyclic acid product in high purity.
Abstract:
Tertiary aliphatic hydroperoxides and peroxides in the presence of a highly concentrated acid catalyst are converted to a mixture of ketones and alcohols in substantially quantitative yields. The corresponding secondary aliphatic hydroperoxides yield product mixtures of alcohols, ketones and aldehydes in varying proportions, depending upon the acid concentration employed.
Abstract:
Butane may be oxidatively dehydrogenated to a mixture of 1-and 2-butenes and butadiene at high space velocities using a catalyst comprising V2O5, K2SO4, SO3 and SiO2.
Abstract translation:可以使用包含V 2 O 5,K 2 SO 4,SO 3和SiO 2的催化剂以高空速将丁烷氧化脱氢成1-丁烯和丁二烯的混合物。
Abstract:
The octane rating of gasoline alkylate may be improved by separating therefrom 2,4- and 2,5-dimethylhexanes (''''DMH'''') and subjecting said DMH to the following combination of steps: (1) oxidizing the DMH to form the corresponding hydroperoxides; (2) reacting of the hydroperoxides with propylene to yield the corresponding diols plus propylene oxide; and (3) dehydrating of the diols to produce 2,2,5,5-tetramethyltetrahydrofuran (''''TMTHF''''), which product is then added to the gasoline alkylate, thereby improving its octane rating. In addition, valuable propylene oxide is recovered as a by-product.