Abstract:
A process is disclosed for dewaxing a hydrocarbon feed to produce a dewaxed lube oil. The feed includes straight chain and slightly branched chain paraffins having 10 or more carbon atoms. In the process the feed is contacted under isomerization conditions with an intermediate pore size molecular sieve having a crystallite size of no more than about 0.5ν and pores with a minimum diameter of at least 4.8 Å and with a maximum diameter of 7.1 Å or less. The catalyst has sufficient acidity so that 0.5 g thereof when positioned in a tube reactor converts at least 50% of hexadecane at 370 °C, a pressure of 1200 psig, a hydrogen flow of 160 ml/min, and a feed rate of 1 ml/hr. It also exhibits 40 or greater isomerization selectivity when used under conditions leading to 96% conversion of hexadecane to other chemicals. The catalyst includes at least one Group VIII metal. The contacting is carried out at a pressure from about 15 psig to about 3000 psig.
Abstract:
A high viscosity index lubricating oil is produced from heavy oils by using a high activity slurry catalyst process. The catalyst is produced by sulfiding aqueous Group VIB metal compounds to a dosage greater than 8 SCF hydrogen sulfide per pound of Group VIB metal. The Group VIB metal can be promoted with Group VIII metals to enhance its activity. High activity slurry catalysts for hydroprocessing heavy hydrocarbon oils are produced from Group VIB metal compounds by sulfiding an aqueous mixture of the metal compound with from greater than about 8 to about 14 SCF of hydrogen sulfide per pound of Group VIB metal. The hydroprocessing of heavy oils is improved by the use of a high activity slurry catalyst prepared by sulfiding an aqueous Group VIB metal compound with a gas containing hydrogen sulfide to a dosage greater than 8 SCF of hydrogen sulfide per pound of Group VIB metal. After introducing the slurry catalyst into the heavy oil, and subjecting the mixture to elevated temperatures and partial pressures of hydrogen, the mixture is treated in a fixed or ebullated bed of hydrodesulfurization/hydrodemetalation catalyst under hydroprocessing conditions.
Abstract:
A method of making a hydrotreating catalyst wherein the catalyst is prepared by mixing a peptized alumina support containing soluble Group IVB and Group VIII metal compounds with a solution containing a soluble Group VIB metal compound and a basic compound. The catalyst is used for hydrodenitrogenation and Ramsbottom Carbon Residue reduction of a hydrocarbon feedstock.
Abstract:
The present invention relates to a hydrocracking and isomerization process for preparing low pour point middle distillate hydrocarbons and lube oil from a hydrocarbonaceous feedstock boiling above about 600 °F by contacting the feedstock with a catalyst containing an intermediate pore size silicoaluminophosphate molecular sieve and a hydrogenation component.
Abstract:
The present invention is a process and a catalyst for isomerizing normal and slightly branched C4 to C7 hydrocarbons. The catalyst comprises a Group VIII metal on Beta zeolite.
Abstract:
The present invention relates to a process for producing a lube oil having a low pour point and excellent viscosity and viscosity index comprising isomerizing a waxy feed over a catalyst comprising an intermediate pore size silicoaluminophosphate molecular sieve and at least one Group VIII metal.
Abstract:
The present invention relates to a process for producing a C20+ lube oil from olefins or reducing the pour point of a lube oil comprising isomerizing the olefins over a catalyst comprising an intermediate pore size silicoaluminophosphate molecular sieve and at least one Group VIII metal.
Abstract:
Poly(vinyl ether) aminocarbamates having formula (I) wherein A is a polyamine moiety having at least one basic nitrogen atom; R1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the poly(vinyl ether) aminocarbamate soluble in hydrocarbons boiling in the gasoline or diesel fuel range; R2 is an alkylene group having 2 to about 8 carbon atoms; R3, R4, R5, R6, R7 and R8 are each independently hydrogen or a lower alkyl group having 1 to about 4 carbon atoms; R9 is an alkyl group having 1 to about 10 carbon atoms; m is 0 or 1; and n is an integer from 5 to 99. The poly(vinyl ether) aminocarbamates of formula (I) are useful as fuel additives for the prevention and control of engine deposits.
Abstract:
Poly(vinyl ether) amines having formula (I), wherein A is an amine moiety having at least one basic nitrogen atom; R1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the poly(vinyl ether) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range; R2 is an alkylene group having 2 to about 8 carbon atoms; R3, R4, R5, R6, R7 and R8 are each independently hydrogen or a lower alkyl group having 1 to about 4 carbon atoms; R9 is an alkyl group having 1 to about 10 carbon atoms; m is 0 or 1; n is an integer from 5 to 99; and W is a hydroxy(oxypropylene) group having formula (a) or (b) or (c) or mixtures thereof. The poly(vinyl ether) amines of formula (I) are useful as fuel additives for the prevention and control of engine deposits.