Gulf Research & Development Company

Angelo A Montagna

Harold Beuther

Sun W Chun

Harold E Swift

James A Frayer

Stephen J Yanik

Howard G McIlvried

Allen Evarts Somers

Edgar R Black

John A Paraskos

William L Kehl

Raynor T Sebulsky

Richard E Hildebrand

Stephen Luther Peake

William H Byler

A process for preparing benzene which involves heating a selected hydrocarbon stock containing condensed polynuclear aromatic rings in the presence of hydrogen under critical reaction conditions.

Process for producing benzene

An improved method for presulfiding a hydrodesulfurization catalyst which comprises continuously contacting the catalyst with a sulfiding treating agent at a relatively low temperature and pressure and only until the total amount of sulfur in the treating agent contacting the catalyst is no more than 55 percent of the amount of sulfur required to sulfide the supported metals on the catalyst to their completely sulfided forms.

Method for presulfiding hydrodesulfurization catalysts

A process for preparing benzene which involves heating a hydrocarbon stock containing polynuclear aromatic rings and having critical hydrogen to carbon atomic ratios in the presence of hydrogen under critical reaction conditions.

A process is provided for the upgrading of solids-containing liquid hydrocarbon oils derived from coal, oil shale and tar sands. The process comprises passing the solids-containing liquid hydrocarbon oil, together with hydrogen, through the void spaces of a fixed catalyst bed wherein the total void volume is within defined critical limits.

Process for upgrading solids-containing liquid hydrocarbon oils

A process for the hydrodesulfurization of feedstocks under comparatively low hydrogen partial pressures, i.e. less than about 1200 psig (8.27 MPa) in contact with a catalyst containing a hydrogenation component supported on a particular carrier. The carrier is a substantially silica-free alumina prepared by calcining a material comprising a dried alumina (i) containing from about 1.2 to about 2.6 moles of water of hydration per mole of Al.sub.2 O.sub.3, (ii) having an (020) line width at 14.degree. (2 .theta.) at 3/4 maximum intensity of from about 2.0.degree. to about 5.0.degree., and (iii) having an intensity ratio relative to the intensity at 10.degree. (2 .theta.) of about 1.3 to about 5.0.

Hydrodesulfurization with a specific alumina-supported catalyst

A process for converting solid carbonaceous material to a liquid product which involves heating a slurry composed of the solid carbonaceous material and a solvent, together with hydrogen, at elevated temperatures and elevated pressures in the presence of a substantially phosphate-free catalyst comprising a hydrogenating component selected from the group consisting of Group VI and Group VIII metals, their oxides and sulfides, supported on a non-zeolitic carrier, which catalyst is promoted with a minor amount of a Group IV-B metal.

Process for the conversion of carbonaceous materials

An improved process for the hydrodesulfurization of hydrocarbons employing a catalyst comprising Group VI-B and Group VIII metals supported on a refractory oxide and promoted with a minor amount of titanium by contacting the refractory oxide with an aqueous solution of a titanium salt.

Hydrodesulfurization process employing a Group IV-B promoted catalyst

A thermal cracking process comprising thermally cracking a non-deasphalted residual oil in a thermal cracking zone containing a fixed bed of inert solids.

Residue thermal cracking process in a packed bed reactor

There is disclosed a method for the selective hydrogenation of cyclopentadiene which comprises contacting cyclopentadiene with hydrogen in the presence of a catalyst consisting essentially of presulfided molybdenum on alumina, and wherein the amount of molybdenum on said catalyst is from 0.52 to 1.18 .times. 10.sup.-3 gram atoms of Mo per 100 m.sup.2 of said alumina surface.

Selective hydrogenation of cyclopentadiene using a presulfided

The pour point reduction of petroleum hydrocarbon stocks is obtained by the process of reducing the nitrogen concentration of the petroleum hydrocarbon stock to an acceptable level and thereafter contacting the petroleum hydrocarbon stock in the presence of hydrogen with a catalyst comprising titanium and a Group VIII noble metal on a decationized crystalline mordenite support under pour point reduction conditions of temperature, pressure and space velocity.

Catalytic pour point reduction of petroleum hydrocarbon stocks

Transformer oils having pour points below -40.degree. F. (-40.00.degree. C.) are produced by the process of reducing the nitrogen concentration of a petroleum hydrocarbon feed stock, contacting the denitrogenated product with a catalyst comprising a Group IV-B metal and a Group VIII noble metal on a decationized crystalline mordenite support under pour point reduction conditions of temperature, pressure and space velocity, and thereafter passing the product of the pour point reduction step to a lubricating oil oxidation stability step.

Process for producing a transformer oil having lower pour point and

An improved hydrogenation process for the denitrification and desulfurization of hydrocarbons employing a catalyst consisting essentially of a Group VI-B metal, nickel and zinc composited with alumina.

Hydrogenation process employing a zinc promoted catalyst

The conversion of hydrocarbons in the presence of hydrogen occurs under hydrocarbon conversion conditions in the presence of a subgroup of a certain class of metal-substituted semi-crystalline aluminosilicates which are synthetic and which are predominantly ordered in two directions, that is, which are laminar or have a layered or stacked sheet structure. The metal substituted for the aluminum in the trioctahedral sites is nickel, cobalt, or mixtures thereof. The catalysts are preferably used in hydroisomerization and hydrocracking processes.

Hydrocarbon conversion process using a Ni and/or CO substituted

A process comprising passing a first stream comprising residual oil and hydrogen downwardly through a zone containing hydrodesulfurization catalyst under hydrodesulfurization conditions until said catalyst is deactivated. Subsequently, passing a second stream of residual oil and hydrogen upwardly through the deactivated hydrodesulfurization catalyst under thermal cracking conditions, including a temperature above the hydrodesulfurization temperature.

Sequential residue hydrodesulfurization and thermal cracking operations

A process comprising passing a residual oil through a plurality of hydrodesulfurization stages in series to produce a relatively low sulfur hydrodesulfurizer residual oil effluent. A portion of desulfurized oil flowing between stages is passed through a thermal cracking zone containing a packed bed of inert solids to produce middle distillates and a cracked residual oil which is relatively high in sulfur but which contains less than 7 weight percent pentane insolubles. Because of its low aromaticity, the relatively high sulfur cracked residual oil is compatible for blending with the relatively low sulfur hydrodesulfurizer residual oil effluent.

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Monroeville, PA, United States of America

Angelo A Montagna