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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Knifton; John F.
Address:
Austin, TX
No. of patents:
176
Patents:


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Patent Number Title Of Patent Date Issued
6315964 Process and system for alkylation of aromatic compounds November 13, 2001
This invention is directed to a reactive distillation process and system for the alkylation of liquid aromatic compounds with a liquid olefin or olefin/paraffin mixture. The aromatic compound may have from about 6 to about 30 carbons and the olefin may have from about 8 to 30 carbons. Th
5847254 Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites December 8, 1998
This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing mordenite is prepared typically by
5777187 Two-step process for alkylation of benzene to form linear alkylbenzenes July 7, 1998
This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing mordenite is prepared typically by
5770782 Process and system for alkylation of aromatic compounds June 23, 1998
This invention is directed to a reactive distillation process and system for the alkylation of liquid aromatic compounds with a liquid olefin or olefin/paraffin mixture. The aromatic compound may have from about 6 to about 30 carbons and the olefin may have from about 8 to 30 carbons. Th
5637778 Isopropyl alcohol and diispropyl ether production from crude by-product acetone in one step June 10, 1997
Disclosed is a one-step method for synthesis of methyl tertiary butyl ether, diisopropyl ether and isopropyl ether from crude streams containing acetone, methanol and t-butyl alcohol which comprises reacting an acetone-rich feed over a bifunctional catalyst comprising 5-45% by weight
5583266 Integrated process for the production of isopropyl alcohol and diisopropyl ethers December 10, 1996
A two-step integrated process for the generation of diisopropyl ether from a crude by-product acetone stream which comprises:a) Hydrogenating said crude acetone over a supported, hydrogenation catalyst to give an isopropanol-rich effluent;b) passing said isopropanol-rich intermediate directl
5550300 Gradient catalyst system for the integrated production of isopropyl alcohol and diisopropyl ethe August 27, 1996
Disclosed is an integrated process for the generation of a mixture of ethers, such as diisopropyl ether, methyl tertiary butyl ether, and/or isopropyl tertiary butyl ether, from a crude by-product acetone stream composed of acetone, tertiary butyl alcohol and methanol by passing such a
5527970 Synthesis of ethyl t-butyl ether from t-butanol in one step using acid catalysts June 18, 1996
Disclosed is an improved process for preparing ethyl t-butyl ether in one-step which comprises reacting tertiary butanol and ethanol in the presence of a catalyst consisting essentially of a macroreticular acid resin or a pentasil zeolite at a temperature of about 40.degree.-140.degr
5488179 Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide January 30, 1996
Disclosed is a method of selective preparation of ditertiary butyl peroxide from tertiary butyl hydroperoxide and t-butanol which comprises reacting said tertiary butyl hydroperoxide and t-butanol over a Beta-zeolite catalyst under hydroperoxide conversion conditions.
5488178 Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide January 30, 1996
Disclosed is a method of selective preparation of ditertiary butyl peroxide from tertiary butyl hydroperoxide and t-butanol which comprises reacting said tertiary butyl hydroperoxide and t-butanol over a solid acid catalyst selected from:a) an acidic montmorillonite clay;b) an acidic zeo
5476972 Isopropyl alcohol and ether production from crude by-product acetone December 19, 1995
Disclosed is a one-step method for synthesis of ethers from mixtures of acetone and t-butyl alcohol which comprises reacting an acetone-rich feed over a bifunctional catalyst comprising 5%-45% by weight hydrogenation catalyst on 55%-95% of the total catalyst weight of a support comprisin
5466778 Process for polymerization of tetrahydrofuran using acidic zeolite catalysts November 14, 1995
Disclosed is an improved process for polymerization of tetrahydrofuran to prepare poly(tetrahydrofuran) products with a MW range of 200 to 5000 and a dispersity of <2, which comprises premixing a carboxylic anhydride, such as, for example acetic anhydride and a dealuminated Y-zeolite
5466778 Process for polymerization of tetrahydrofuran using acidic zeolite catalysts November 14, 1995
Disclosed is an improved process for polymerization of tetrahydrofuran to prepare poly(tetrahydrofuran) products with a MW range of 200 to 5000 and a dispersity of <2, which comprises premixing a carboxylic anhydride, such as, for example acetic anhydride and a dealuminated Y-zeolite
5457243 Neutralization of crude MTBE effluent streams using solid bases October 10, 1995
Disclosed is a method for removing organic acids and derivatives thereof from a crude methyl tertiary butyl ether (MTBE) stream of the type found in the feed to, or effluent from, a reactor for a one-step process for producing MTBE which comprises:contacting said crude MTBE stream in a t
5449839 One step synthesis of ethyl t-butyl ether from t-butanol using .beta.-zeolite and multimetal-mod September 12, 1995
Disclosed is an improved process for preparing ethyl t-butyl ether in one step which comprises reacting tertiary butanol and ethanol in the presence of a catalyst selected from zeolite beta and zeolite beta modified with multimetals selected from the group consisting of Groups IB, VB, VI
5449838 Isopropyl t-butyl ether (IPTBE) generation from crude acetone September 12, 1995
Disclosed is a two-step process for the generation of isopropyl t-butyl ether from a crude by-product acetone stream which comprises:a) Hydrogenating said crude acetone over a bulk metal, nickel-rich catalyst to give an isopropanol-rich effluent;b) subjecting said isopropanol-rich intermedia
5430198 Diisopropyl ehter/MTBE cogeneration from crude by-product acetone July 4, 1995
Disclosed is a two-step process for the generation of diisopropyl ether from a crude by-product acetone stream which comprises:a) Hydrogenating said crude acetone over a bulk-metal, nickel-rich catalyst to give an isopropanol-rich effluent;b) Dehydrating said isopropanol-rich intermediate in
5414163 Use of titania or zirconia in the preparation of tertiary butyl alcohol from tertiary butyl hydr May 9, 1995
A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catal
5414162 Use of pentagonally supported palladium catalyst in the preparation of tertiary butyl alcohol fr May 9, 1995
A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catal
5414141 Use of supported palladium catalysts in the preparation of tertiary butyl alcohol from tertiary May 9, 1995
A method for preparing tertiary butyl alcohol wherein a solution of a tertiary butyl hydroperoxide feedstock in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consi
5387723 One-step synthesis of methyl t-butyl ether from t-butanol using .beta.-zeolite catalysts modifie February 7, 1995
Disclosed is a method for producing alkyl tertiary alkyl ethers which comprises reacting t-butanol with an alkanol in the presence of a catalyst which exhibits extended life comprising .beta.-zeolite modified with one or more metals selected from the group consisting of Group IA and Grou
5387722 One-step synthesis of methyl t-butyl ether from t-butanol using pentasil zeolite catalysts February 7, 1995
Disclosed is a process for preparing alkyl tertiary alkyl ethers in one step which comprises reacting tert-butanol and a C.sub.1 -C.sub.4 primary alcohol in the presence of a catalyst consisting essentially of a pentasil zeolite having a silica/alumina ratio of 50-150, optionally with a
5364981 On-step synthesis of methyl t-butyl ether from t-butanol using platinum/palladium modified .beta November 15, 1994
Disclosed is an improved process for preparing alkyl tertiary alkyl ethers, especially methyl t-butyl ether, in one step which comprises reacting tertiary butanol and methanol in the presence of a catalyst comprising .beta.-zeolite modified with one or more metals selected from Group VII
5362913 Saturated, aminated, alkoxylated polybutadienes November 8, 1994
Highly saturated, highly aminated alkoxylated polymers may be reliably made by an improved process involving the steps of (1) polymerizing one or more unsaturated hydrocarbons to form a liquid polymer, where at least one of the unsaturated hydrocarbons is butadiene; (2) providing the liq
5359130 Use of supported palladium/platinum catalysts in the preparation of tertiary butyl alcohol from October 25, 1994
A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catal
5354917 Use of supported rhodium catalysts in the preparation of tertiary butyl alcohol from tertiary bu October 11, 1994
A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catal
5352847 One-step synthesis of methyl t-butyl ether from t-butanol using pillared, phosphated montmorillo October 4, 1994
A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement of accomplishing the reaction which comprises:a. Using a catalyst comprising a chlorohydrol-treated, phosphated montmorillonite clay,b. c
5349110 Synthesis of low molecular weight glycol ethers from oxiranes plus olefins September 20, 1994
Disclosed is a process for preparation of monoalkyl ethers by reacting low molecular weight olefins and the corresponding oxiranes, in the presence of a catalyst comprising an acidic heterogeneous or homogeneous catalyst, generally represented by the equation: ##STR1## where R, R
5345009 Conjoint production of ditertiary butyl peroxide and tertiary butyl alcohol from tertiary butyl September 6, 1994
A method for conjointly preparing tertiary butyl alcohol and ditertiary butyl peroxide wherein a solution of a tertiary butyl hydroperoxide feedstock in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a h
5344984 Method for preparing "twin-tailed" polyoxyalkylene tertiary amines September 6, 1994
A method for preparing "twin-tailed" tertiary amines which have two moles of alkoxylated phenol bonded to each nitrogen function of a molecule of methylamine and represented by the formula: ##STR1## wherein x represents zero to about 30 which comprises alkylating a mole of methyl
5338890 One step synthesis of methyl t-butyl ether from t-butanol using alkylsulfonic acid-modified oxid August 16, 1994
Disclosed is a method wherein t-butanol is reacted with methanol in one step to provide methyl t-butyl ether at a temperature of about 20.degree. C. to 250.degree. C. and a pressure of about atmospheric to about 1000 psig employing a heterogenous catalyst comprising a Group IV oxide havi
5313006 Cogeneration of isobutylene plus MTBE from crude t-butanol/methanol feedstocks May 17, 1994
Disclosed is an improvement in a method for cogeneration of isobutylene and MTBE by etherification of tBA/MeOH over an ion-exchange resin which allows for more complete conversion of the remaining tBA fraction and comprises a second step consisting essentially of recovering the MTBE from
5304681 Tert-butylamine synthesis over montmorillonite clays April 19, 1994
Disclosed is a method for preparation of alkylamines which comprises reacting ammonia and a monounsaturated olefin in the presence of a catalyst selected from the group consisting of:a. Acid modified montmorillonite clays;b. Heterogeneous catalysts comprising a fluorine-containing compound o
5300703 Alkylphenol synthesis using heteropoly acid catalysts April 5, 1994
Disclosed is a one step method for synthesis of alkylphenols which comprises reacting phenol with the corresponding olefin under adiabatic conditions in the presence of a catalyst comprising a heteropoly acid represented by the structure:where x=P or Si, M=Mo or w.sub.v and n is an integ
5300697 One step synthesis of methyl t-butyl ether from t-butanol using hydrogen fluoride-modified zeoli April 5, 1994
A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement of accomplishing the reaction which comprises:a. Using a catalyst consisting of a crystalline aluminosilicate faujasite Y-type zeolite wh
5276239 Dimerization of long-chain olefins using a silica gel alkylsulfonic acid January 4, 1994
A process is disclosed for preparing synthetic lubricant base stocks having a high dimer to trimer ratio from long-chain olefins. These synthetic lubricant base stocks are prepared in good yield by dimerizing linear olefins using a catalyst comprising a silica gel alkylsulfonic acid.
5276215 Alkylphenol synthesis using zeolites as catalysts, particularly dealuminized y-zeolites January 4, 1994
Disclosed is a one-step method for synthesis of alkylphenols which comprises reacting phenol with the corresponding olefin under adiabatic conditions in the presence of a zeolite catalyst, preferably a dealuminated Y-zeolite, a modified Y-zeolite, or a .beta.-zeolite.
5262562 Polyether glycol production by polymerization of tetrahydrofuran November 16, 1993
A method is disclosed wherein tetrahydrofuran is reacted in the presence of acetic anhydride and a catalyst to provide acetate derivatives of polyglycols and using as a catalyst a triflic acid-modified montmorillonite clay at a temperature of 0.degree.-1000.degree. C. and atmospheric
5256828 Heterogeneous catalyst for alkoxylation of alcohols October 26, 1993
Disclosed is a process for producing narrow range glycols which comprises reacting a glycol with ethylene oxide in the presence of a heterogeneous catalyst consisting essentially of an alkali metal, alkaline earth metal or alkali metal halide impregnated into an inorganic solid oxide sel
5254759 Catalytic removal of peroxide contaminants from tertiary butyl alcohol October 19, 1993
Tertiary butyl alcohol contaminated with residual amounts of peroxide contaminants such as tertiary butyl hydroperoxide, ditertiary butyl peroxide, allyl tertiary butyl peroxide, etc., (which may be prepared, for example, by catalytically reacting propylene with tertiary butyl hydrop
5243118 Process for oligomerizing olefins using sulfate-activated molecular sieves September 7, 1993
An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using sulfate-activated molecular sieves as catalyst.
5243100 Preparation of tertiary butyl alcohol using promoted cycloalkenyl iron catalyst September 7, 1993
A method for preparing tertiary butyl alcohol wherein a solution of a tertiary butyl hydroperoxide feedstock comprising a solution of tertiary butyl hydroperoxide in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective
5242621 Combinations of alkanoic hydrocarbyl dicarboxylic and carbocyclic alkanoic acids or salts useful September 7, 1993
Corrosion inhibitors containing alkanoic, hydrocarbyl dicarboxylic and carbocyclic-substituted, alkanoic acids or salts give high performance, heat transfer fluids and antifreezes, with improved properties including storage stability.
5233116 Process for preparing oligomers having low unsaturation August 3, 1993
Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefin monomers using certain acidic calcium montmorillonite clay catalysts. When the oligomers are prepared at a temperature greater than about 200.degree. C., and any unreacted linear olefin monom
5220078 One step synthesis of methyl t-butyl ether from t-butanol using fluorophosphoric acid-modified z June 15, 1993
A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement in accomplishing the reaction which comprises:a. Using a catalyst consisting of a crystalline aluminosilicate faujasite Y-type zeolite wh
5214218 One step synthesis of methyl t-butyl ether from t-butanol using haloacid-modified clay catalysts May 25, 1993
A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement of accomplishing the reaction which comprises:a. Using a catalyst comprising a montmorillonite clay treated with a haloacid;b. continuous
5214217 Method for one-step synthesis of methyl t-butyl ether May 25, 1993
A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in the presence of a catalyst to provide methyl-tert-butyl ether and the improvement of accomplishing the reaction in one-step which comprises:a. using a catalyst selected from the group consisting of aci
5214182 Process for cogeneration of ethylene glycol and dimethyl carbonate May 25, 1993
A process is disclosed for the cogeneration of ethylene glycol and dimethyl carbonate by reacting methanol and ethylene carbonate in the presence of a heterogeneous, phosphine-bound polymer catalyst. Dimethyl carbonate and ethylene glycol are generated in greater than 98% selectivity.
5206424 Decomposition of tertiary butyl hydroperoxide using cycloalkenyl iron catalyst April 27, 1993
A method for preparing tertiary butyl alcohol wherein a solution of a tertiary butyl hydroperoxide in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a soluble iron hydroperoxide decomposition catalyst co
5191139 Process for oligomerizing olefins using sulfate-activated group IV oxides March 2, 1993
An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using a sulfate-activated Group IV oxide particularly zirconium dioxide, as the catalyst.
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