Richard R Ernst

US Patent:

43428312, Aug 3, 1982

Filed:

Apr 9, 1981

Appl. No.:

6/252351

Inventors:

Marcel D. Faber - Princeton NJ
Richard H. Ernst - Kendall Park NJ
Philip H. Lefebvre - Spotswood NJ

Assignee:

American Can Company - Greenwich CT

International Classification:

C12P 706

US Classification:

435163

Abstract:

Method of preconditioning acid hydrolyzates derived from lignocellulosic materials such as sawdust or newspaper and preconditioned acid hydrolyzates are provided. The preconditioning negates the effect of substances which tend to inhibit fermentation and comprises a series of steps including steam-stripping, calcium oxide treatment at a pH of 10 to 10. 5, adjusting the pH to about 6 to 7 with a mineral acid and especially phosphoric acid and concentrating the hydrolyzate solution to a glucose concentration of less than 150 grams per liter. Glucose contained in such preconditioned hydrolyzates is readily fermentable to ethyl alcohol, in theoretical yield, after fermentation for as short a period as 1 to 2 hours.

US Patent:

59487194, Sep 7, 1999

Filed:

Feb 3, 1998

Appl. No.:

9/018168

Inventors:

Jack W. Johnson - Clinton NJ
Bruce R. Cook - Pittstown NJ
Guang Cao - Branchburg NJ
Rich A. McEvoy - Upper Black Eddy PA
Richard H. Ernst - Glen Gardner NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

B01J 2100

US Classification:

502 73

Abstract:

Ferrierite is ion exchanged with trivalent rare earth metals by a hydrothermal ion exchange method. The ion exchange is carried out by contacting ferrierite, in which its cation exchange positions are occupied by hydrogen or a hydrogen precursor, with an aqueous solution of one or more rare earth metal cations at a temperature above the boiling point of the solution. After the ion exchange, preferably at least 10% and more preferably at least 15% of the ferrierite cation exchange capacity is occupied by a trivalent rare earth metal cation. When combined with a catalytic metal, such as a Group VIII noble metal, the trivalent rare earth metal ion exchanged ferrierite is useful as a dewaxing catalyst having good selectivity for lubricating oil fractions, particularly when dewaxing a Fischer-Tropsch wax hydroisomerate.

US Patent:

51571994, Oct 20, 1992

Filed:

Apr 1, 1991

Appl. No.:

7/677905

Inventors:

Stuart L. Soled - Pittstown NJ
Enrique Iglesia - Clinton NJ
George M. Kramer - Berkeley Heights NJ
William E. Gates - Somerset NJ
Richard H. Ernst - Glen Gardner NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C07C 513

US Classification:

585750

Abstract:

A process for isomerizing a paraffin feed comprising contacting the feed with a strong, solid acid catalyst comprising a sulfated Group IVB metal oxide and at least one Group VIII metal in the presence of hydrogen and an adamantane compound.

US Patent:

62841270, Sep 4, 2001

Filed:

Oct 12, 1999

Appl. No.:

9/416038

Inventors:

Bruce R. Cook - Pittstown NJ
Jack W. Johnson - Clinton NJ
Guang Cao - Branchburg NJ
Rich A. McEvoy - Upper Black Eddy PA
Richard H. Ernst - Glen Gardner NJ

Assignee:

Exxon Research and Engineering Company - Annandale NJ

International Classification:

L10G 2500

US Classification:

208 27

Abstract:

A process for dewaxing waxy hydrocarbonaceous materials, such as hydrocarbon fuel and lubricating oil fractions to reduce their cloud and pour points comprises reacting the material with hydrogen in the presence of a dewaxing catalyst comprising at least one metal catalytic component and ferrierite in which at least a portion of its cation exchange positions are occupied by one or more trivalent rare earth metal cations. The rare earth ion exchanged ferrierite catalyst has good selectivity for lubricating oil production, particularly when dewaxing a Fischer-Tropsch wax hydroisomerate. Preferably at least 10% and more preferably at least 15% of the ferreirite cation exchange capacity is occupied by one or more trivalent rare earth metal cations.

US Patent:

60131713, Jan 11, 2000

Filed:

Feb 3, 1998

Appl. No.:

9/018019

Inventors:

Bruce R. Cook - Pittstown NJ
Jack W. Johnson - Clinton NJ
Guang Cao - Branchburg NJ
Rich A. McEvoy - Upper Black Eddy PA
Richard H. Ernst - Glen Gardner NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C10G 2500

US Classification:

208 27

Abstract:

A process for dewaxing waxy hydrocarbonaceous materials, such as hydrocarbon fuel and lubricating oil fractions to reduce their cloud and pour points comprises reacting the material with hydrogen in the presence of a dewaxing catalyst comprising at least one metal catalytic component and ferrierite in which at least a portion of its cation exchange positions are occupied by one or more trivalent rare earth metal cations. The rare earth ion exchanged ferrierite catalyst has good selectivity for lubricating oil production, particularly when dewaxing a Fischer-Tropsch wax hydroisomerate. Preferably at least 10% and more preferably at least 15% of the ferreirite cation exchange capacity is occupied by one or more trivalent rare earth metal cations.