Patents by Inventor Mark A. Toft
Mark A. Toft has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4883896Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated mononitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: November 14, 1988Date of Patent: November 28, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4883895Abstract: Disclosed is the reaction of propane and isobutane with O.sub.2 and NH.sub.3 to make .alpha.,.beta.-unsaturated nitriles and olefins, using certain complex metal oxide catalyst compositions and an excess of the paraffin over both the O.sub.2 and the NH.sub.3. Also disclosed are suitable catalyst compositions for such reactions.Type: GrantFiled: May 8, 1989Date of Patent: November 28, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4879264Abstract: Disclosed is a method of making a catalyst precursor by aging an aqueous solution containing the monoperoxovanadium ion, VO(O.sub.2).sup.+, until a vanadium-containing sol or gel is formed, and reacting said vanadium while in said aqueous sol or gel form, with an antimony compound that contains Sb having a valence of 3. In one embodiment, the VO(O.sub.2).sup.+ ion is made by reacting H.sub.2 O.sub.2 with a vanadium compound.Also disclosed is making a catalyst by drying and calcining such precursor. When the drying is effected by spray drying a microspheroidal catalyst is produced. The catalysts useful for ammoxidation of propane are more attrition resitant than catalysts of the same empirical formula made by prior art methods.Type: GrantFiled: November 14, 1988Date of Patent: November 7, 1989Assignee: The Standard Oil CompanyInventors: Mark A. Toft, James F. Brazdil, Jr., Linda C. Glaeser
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Patent number: 4877764Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: July 22, 1988Date of Patent: October 31, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4874738Abstract: Disclosed is the reaction of propane and isobutane with O.sub.2 and NH.sub.3 to make .alpha.,.beta.-unsaturated nitriles and olefins, using certain complex metal oxide catalyst compositions and an excess of the paraffin over both the O.sub.2 and the NH.sub.3. Also disclosed are suitable catalyst compositions for such reactions.Type: GrantFiled: September 9, 1988Date of Patent: October 17, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4871706Abstract: Disclosed is the reaction of C.sub.3 to C.sub.4 paraffins with O.sub.2 and NH.sub.3 to make .alpha.,.beta.-unsaturated nitriles and olefins, using certain complex metal oxide catalysts containing V, Sb, W and certain optional elements.Type: GrantFiled: December 16, 1987Date of Patent: October 3, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4866195Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: August 22, 1988Date of Patent: September 12, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4866024Abstract: Disclosed is the reaction of propane and isobutane with O.sub.2 and NH.sub.3 to make .alpha.,.beta.-unsaturated nitriles and olefins, using certain complex metal oxide catalyst compositions and an excess of the paraffin over both the O.sub.2 and the NH.sub.3. Also disclosed are suitable catalyst compositions for such reactions.Type: GrantFiled: September 29, 1988Date of Patent: September 12, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4866194Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated mononitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: November 14, 1988Date of Patent: September 12, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4837233Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkano:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst composition, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: May 15, 1987Date of Patent: June 6, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4837191Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated mononotrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: June 9, 1988Date of Patent: June 6, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4835125Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particular catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated mononitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: May 31, 1988Date of Patent: May 30, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4814478Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst comosition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: March 28, 1988Date of Patent: March 21, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4801727Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: March 28, 1988Date of Patent: January 31, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4801568Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: October 22, 1987Date of Patent: January 31, 1989Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Linda C. Glaeser, Mark A. Toft
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Patent number: 4784979Abstract: Disclosed is a method of making a catalyst precursor by reacting the ion VO(O.sub.2).sup.+ in aqueous solution with an antimony compound that contains Sb having a valence of 3. In one embodiment, the VO(O.sub.2).sup.+ ion is made by reacting H.sub.2 O.sub.2 with a vanadium compound.Also disclosed is making a catalyst by drying and calcining such precursor. When the drying is effected by spray drying a new microspheroidal catalyst is produced. The catalysts useful for ammoxidation of propane are more attrition resistant than catalysts of the same empirical formula made by prior art methods.Type: GrantFiled: December 7, 1987Date of Patent: November 15, 1988Assignee: The Standard Oil CompanyInventors: Mark A. Toft, James F. Brazdil, Jr., Linda C. Glaeser
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Patent number: 4783545Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: December 23, 1987Date of Patent: November 8, 1988Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4769355Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: April 20, 1987Date of Patent: September 6, 1988Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4767739Abstract: Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalyst compositions useful in the process are also disclosed.Type: GrantFiled: April 20, 1987Date of Patent: August 30, 1988Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4388284Abstract: Diborane is produced by reacting lithium or sodium borohydride with boron trifluoride in the absence of a solvent, thereby avoiding the dangers associated with the ether solvents previously used in similar reactions. The reaction appears to proceed via hydride abstraction from the borohydride, rather than via the hydride-halide exchange mechanism in the corresponding reaction in ether solution. Yields of about 95% can be achieved.Type: GrantFiled: September 18, 1981Date of Patent: June 14, 1983Assignee: The Ohio State University Research FoundationInventors: Sheldon G. Shore, Mark A. Toft