公开(公告)号：US12115492B2

公开(公告)日：2024-10-15

申请号：US17082166

申请日：2020-10-28

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Mark L Heinnickel ,  Steven W Levine ,  Robert D Nielsen ,  Yuchen Liu ,  Joseph C Weissman

IPC: B01D53/14 ,  B01D53/52 ,  B01D53/96 ,  C01C1/02 ,  C01C1/04 ,  C12M1/00 ,  C12N9/10 ,  C12P3/00 ,  C12P7/64 ,  C12P13/00 ,  C12P19/04

CPC classification number: B01D53/1425 ,  B01D53/1468 ,  B01D53/1493 ,  B01D53/52 ,  B01D53/96 ,  C01C1/026 ,  C01C1/04 ,  C12M21/02 ,  C12N9/1085 ,  C12Y205/01 ,  B01D2251/90 ,  B01D2251/95 ,  B01D2257/304 ,  C12P3/00 ,  C12P7/64 ,  C12P13/005 ,  C12P19/04

Abstract: The present disclosure relates to processes for desulfurizing hydrocarbon feedstocks. The processes may include introducing a feedstock comprising hydrogen sulfide to an absorber comprising a metal chelate to form a reduced metal chelate. The processes may further include introducing the reduced metal chelate to a photobioreactor comprising a phototrophic bacterium. The present disclosure also relates to apparatuses for desulfurizing hydrocarbon feedstock. An apparatus may include and absorber and a photobioreactor fluidly connected to the absorber. The photobioreactor may be an anaerobic vessel with a light source.

公开(公告)号：US20240191265A1

公开(公告)日：2024-06-13

申请号：US18509425

申请日：2023-11-15

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Xiaozhou Zhang ,  Glen E. Alliger ,  Yuchen Liu

IPC: C12P7/62

CPC classification number: C12P7/62

Abstract: Methods of β-lactone production, including the integrated bioconversion of β-lactone production and methods related thereto. Methods include reacting a feedstock and a recombinant microorganism harboring one or more genes encoding enzymes involved in the metabolic pathway of a 3-hydroxycarboxylic acid, thereby producing a 3-hydroxycarboxylic acid having C1-C10 alkyl groups. Thereafter, reacting the 3-hydroxycarboxilic acid with a bioengineered natural β-lactone synthetase, the bioengineered β-lactone synthetase engineered to comprise a substrate binding pocket capable of accepting the 3-hydroxycarboxylic acid having C1-C10 alkyl groups, thereby producing a β-lactone having C1-C10 alkyl groups.

公开(公告)号：US20230383341A1

公开(公告)日：2023-11-30

申请号：US17752338

申请日：2022-05-24

Applicant: ExxonMobil Technology and Engineering Company ,  University of Georgia Research Foundation, Inc.

Inventor： Yuchen Liu ,  William B. Whitman ,  Taiwo S. Akinyemi ,  Zhe Lyu ,  Nana Shao

IPC: C12Q1/6865 ,  C12N15/74

CPC classification number: C12Q1/6865 ,  C12N15/74 ,  C12N2510/02

Abstract: The present invention provides an isolated DNA molecule suitable for use as, or in, a phosphate responsive inducible promoter. The invention also provides expression cassettes comprising the promoter operably linked to a gene. The invention further provides vectors and prokaryotic host cells, for expressing a protein encoded by the gene; methods for transforming prokaryotic cells; and methods of inducing expression of an exogenous gene in a prokaryotic cell culture, the method including lowering the levels of inorganic phosphates in the culture.