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公开(公告)号：US11781159B2
公开(公告)日：2023-10-10
申请号：US17068147
申请日：2020-10-12
Inventor： Xiaozhou Zhang , Zarath M Summers , Partha Nandi , Mark P Hagemeister , Jihad M Dakka , Mohor Chatterjee , Vera Grankina
IPC: C12P7/42 , C07C51/377 , C12P19/02 , C12P19/14 , C13K1/00 , C12N1/16 , C07C51/367 , C07C59/01
CPC classification number: C12P7/42 , C07C51/377 , C12P19/02 , C12P19/14 , C13K1/00
Abstract: Hydroxycarboxylic acids may be biosynthesized from a carbonaceous feedstock and then isolated through forming and subsequently hydrolyzing an intermediate sophorolipid. After biosynthesizing a hydroxycarboxylic acid in a cell culture medium or otherwise providing a hydroxycarboxylic acid in a first aqueous medium, the hydroxycarboxylic acid and glucose may be converted into at least one sophorolipid by a suitable microorganism or an enzyme cocktail. The at least one sophorolipid may be then be separated from the cell culture medium or first aqueous medium and then hydrolyzed in a second aqueous medium to form the hydroxycarboxylic acid and glucose as free components separate from the cell culture medium or first aqueous medium. The hydroxycarboxylic acid is present as a phase separate from the second aqueous medium and the glucose remains in the second aqueous medium.
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公开(公告)号：US11859133B2
公开(公告)日：2024-01-02
申请号：US17496644
申请日：2021-10-07
Inventor： Wesley Sattler , Keith R. Hajkowski , Changmin Chun , Partha Nandi , Vera Grankina , Joseph E. Gatt , Ning Ma , Anastasios Skoulidas , William R. Gunther , Everett J. O'Neal
IPC: C10G11/04 , C10G11/22 , B01J35/04 , B01J21/04 , B01J23/755 , B01J38/12 , B01J8/00 , B01J23/00 , B01J23/10 , B01J23/46 , B01J29/74 , B01J35/00 , B01J35/10 , B01J37/03 , B01J37/04 , B01J37/08 , C01B3/38 , C01B3/40
CPC classification number: C10G11/04 , B01J8/008 , B01J21/04 , B01J23/002 , B01J23/10 , B01J23/464 , B01J23/755 , B01J29/74 , B01J35/0006 , B01J35/04 , B01J35/1009 , B01J35/1014 , B01J37/038 , B01J37/04 , B01J37/082 , B01J38/12 , C01B3/382 , C01B3/384 , C01B3/40 , C10G11/22 , B01J2208/00017 , B01J2208/00548 , C01B2203/0233 , C01B2203/0811 , C01B2203/1058 , C01B2203/1064 , C10G2300/70
Abstract: Systems and methods are provided for using size-reversing materials in vessels where direct heating is used to at least partially provide heat for reforming reactions under cyclic reforming conditions. An example of a size-reversing material is the combination of NiO and Al2O3. It has been discovered that size-reversing materials can undergo a phase transition that can assist with re-dispersion of metal at elevated temperatures. This can assist with maintaining catalytic activity for reforming over longer time periods in the presence of cyclic reforming conditions.
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公开(公告)号：US11827587B2
公开(公告)日：2023-11-28
申请号：US17236496
申请日：2021-04-21
Inventor： Partha Nandi , Steven L. Suib
CPC classification number: C07C29/50 , B01J3/008 , B01J27/24 , B01J2219/00051 , B01J2219/00166 , C07C2527/24
Abstract: Systems and methods are provided for direct conversion of methane and/or ethane to methanol. The methods can include exposing methane to an oxidant, such as O2, in a solvent at conditions that are supercritical for the solvent while having a temperature of 310° C. or less, or about 300° C. or less, or about 290° C. or less. The solvent can correspond to an electron donor solvent that, when in a supercritical state, can complex with O2. By forming a complex with the O2, the supercritical electron donor solvent can facilitate conversion of alkane to methanol at short residence times while reducing or minimizing further oxidation of the methanol to other products.
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