Charles Corey Knight

US Patent:

49527479, Aug 28, 1990

Filed:

May 26, 1989

Appl. No.:

7/358759

Inventors:

Richard A. Alexander - Mobile AL
Charles E. Knight - Mobile AL
Darrell D. Whitehurst - Titusville NJ

Assignee:

Mobil Oil Corp. - New York NY

International Classification:

C07C 710
C07C 712

US Classification:

585803

Abstract:

According to this invention, substantially hydrocarbonaceous fractions comprising diamondoid compounds are peculiarly suitable for separation by a thermal gradient diffusion process. Applicability of this process to this service is dependent upon the fact that the diamondoid compounds exhibit a large change in viscosity relative to temperature, that is, their viscosity goes down significantly per degree of increase in temperature.

US Patent:

49527487, Aug 28, 1990

Filed:

Sep 7, 1989

Appl. No.:

7/405119

Inventors:

Richard A. Alexander - Mobile AL
Charles E. Knight - Mobile AL

Assignee:

Mobil Oil Corp. - New York NY

International Classification:

C07C 710
C07C 712

US Classification:

585803

Abstract:

A process is disclosed for extracting diamondoid compounds from a hydrocarbon gas stream. The process includes two stages, each of which alone is effective to remove diamondoids from a hydrocarbon gas stream. The first stage comprises contacting the diamondoid-laden hydrocarbon gas with a suitable solvent to preferentially dissolve the diamondoids into the solvent. Diesel fuel is the preferred solvent for this first stage. The second stage comprises sorbing diamondoids from the diamonoid-laden hydrocarbon gas with silica gel. The most preferred embodiment of the invention is a serial process in which a diamondoid-laden gas is first treated in the solvation stage and the partially purified gas is further resolved in the silica gel sorption stage. The invention still further includes a process for segregating adamantane and diamantane when both are separated from a hydrocarbon gas stream.

US Patent:

49527495, Aug 28, 1990

Filed:

May 26, 1989

Appl. No.:

7/358760

Inventors:

Richard A. Alexander - Mobile AL
Charles E. Knight - Mobile AL
Darrell D. Whitehurst - Titusville NJ

Assignee:

Mobil Oil Corp. - New York NY

International Classification:

C07C 712
C07C 710

US Classification:

585803

Abstract:

A process for recovering diamondoid compounds from a fluid mixture thereof with other hydrocarbonaceous compounds which comprises contacting said mixture with a porous solid, for example, a zeolite, having pore opening large enough to admit said diamondoid compounds thereinto and small enough so that at least 50% of the external atoms of said diamondoid compounds are capable of simultaneously contacting the internal walls of the pores of said solid under conditions conducive to absorption of diamondoid compounds by said solid; and then desorbing the absorbate comprising diamondoid compounds from said solid absorbant.

US Patent:

49820494, Jan 1, 1991

Filed:

May 26, 1989

Appl. No.:

7/358761

Inventors:

Richard A. Alexander - Mobile AL
Charles E. Knight - Mobile AL
Darrell D. Whitehurst - Titusville NJ

Assignee:

Mobil Oil Corp. - New York NY

International Classification:

C07C 710
C07C 712

US Classification:

585803

Abstract:

A process for recovering diamondoid compounds from hydrocarbonaceous minerals and/or from deposits left by such minerals in equipment or otherwise, which comprises dissolving diamondoid compounds in an aromatic distillate fuel oil; extracting aromatics from the solution; and separating diamondoid compounds from the raffinate of the extraction.