Abstract: Petroleum wax feeds are converted to high Viscosity Index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to non-lube range products of no more than about 30 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 1000 psig using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity dicarboxylic acid-treated zeolite Beta or mordenite catalyst which effects a preferential isomerization on the paraffin components to less waxy, high V.I. isoparaffins. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig.

Abstract: There is provided a process for upgrading hydrocarbon feedstocks, such as resids or shale oil. The process uses a catalyst comprising at least one Group VIA or Group VIII metal, such as nickel and molybdenum, and an ultra-large pore oxide material. The ultra-large pore oxide material is used in decreasing pore size from top to bottom of the reactor.

Abstract: There is provided a process for ring opening of aromatics and cycloaliphatics, as well as isomerization of aliphatics. The feedstream to this process comprises hydrocarbons having 6 carbon atoms. The process involves the use of at least two reactors connected in series. The first reactor contains a zeolite catalyst and is operated under conditions which particularly promote ring opening. The catalyst in this first reactor may comprise zeolite Beta and platinum. A downstream reactor is operated under conditions to promote isomerization of aliphatics. The catalyst in the second reactor may comprise alumina, platinum and a chloride component.

Abstract: Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst, modified to reduce surface acidity, and preferably an intermediate pore size zeolite such as ZSM-5. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.

Abstract: Heavy oils are subjected to catalytic cracking in the absence of added hydrogen using a catalyst containing a zeolite having the structure of ZSM-12 and a large-pore crystalline zeolite having a Constraint Index less than about 1. The process is able to effect a bulk conversion of the oil while at the same time yielding a higher octane gasoline and increased light olefin content.

Abstract: An improved solvent dewaxing process in which a method and apparatus for continuous hot wash of a dewaxing filter is disclosed. A hot wash solvent is continuously sprayed below the doctor blade followed by a cold solvent spray below the hot solvent spray. Additionally, a solvent management process for changing the proportions of the solvent in response to different viscosity feedstocks thereby increasing filtration efficiency is also disclosed.

Abstract: A process for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion catalyst is a crystalline aluminosilicate zeolite having a Constraint Index greater than 1 and a reduced surface acidity. The surface acidity is reduced by selective surface dealumination of the crystalline aluminosilicate zeolite by contacting the zeolite with dicarboxylic acid, such as oxalic acid.

Abstract: The present invention provides a two-stage process for production of high-octane naphtha range isoparaffins from a feed rich in normal and/or slightly branched paraffins. In the first stage, the normal and/or slightly branched paraffins are selectively converted to multi-branched paraffins and then cracked in a second stage to yield naphtha range isoparaffins which can be blended into a high-octane gasoline pool.

Abstract: This invention is a process of converting n-pentane to cyclopentene. In accordance with a preferred embodiment n-pentane feed is converted in a dual temperature stage-dual catalyst process without interstage processing of the first-stage product mixture.

Abstract: This invention is a process of converting n-pentane to cyclopentane. In accordance with a preferred embodiment of the invention, n-pentane feed is converted in dual temperature stage process without interstage processing of the first stage product mixture.

Abstract: A catalytic dehydrogenation and/or dehydrocyclization of paraffins.

Abstract: A process for the selective surface dealumination of a zeolite having a Constraint Index greater than 1 by contacting the zeolite with dicarboxylic acid, such as oxalic acid.

Abstract: A process for the dealumination of a zeolite having the structure of mordenite by contacting the zeolite with dicarboxylic acid, such as oxalic acid, and steaming. The process is useful for the dealumination of TEA mordenite.

Abstract: A process for the selective surface dealumination of organic-containing zeolites by contacting the zeolite with dicarboxylic acid, such as oxalic acid. The treatment results in a reduction in surface acidity without a significant reduction in overall activity. The organic may be a directing agent used in the zeolite synthesis or introduced into the pores of the zeolite after thermal treatment.

Abstract: This invention relates to a new form of crystalline material identified as zeolite ZSM-11, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.

Abstract: A process for the dealumination of a zeolite having the structure of zeolite Beta by contacting the zeolite with dicarboxylic acid, such as oxalic acid.

Abstract: This invention relates to a new form of crystalline material identified as zeolite ZSM-12, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.

Abstract: An improved solvent dewaxing process in which a method and apparatus for continuous hot wash of a dewaxing filter is disclosed. A hot wash solvent is continuously sprayed below the doctor blade followed by a cold solvent spray below the hot solvent spray. Additionally, a solvent management process for changing the proportions of the solvent in response to different viscosity feedstocks thereby increasing filtration efficiency is also disclosed.

Abstract: A process for the conversion of tertiary alcohols to C.sub.8 + olefin products over a zeolite catalyst, such as zeolite Beta. The process is particularly useful for the conversion of t-butyl alcohol to 2,2,4-trimethyl pentene. A two-step partial oxidation/dimerization process to yield C.sub.8 + olefin products is also disclosed.

Abstract: A hydrous aluminosilicate adsorbent composition in which the active adsorbent is a mixture of non-fibrous clay with non-fibrous zeolite. The composition is useful as a feed supplement in animal husbandry, and as a topical adsorbent for veterinary use. The mixture has a high capacity for adsorption of ammonium cations, and a synergistically high selectivity for their adsorption. Beneficial effects as feed supplement may arise from lowering the amount of ammonia passed to the liver from the alimentary canal.