公开(公告)号：US20240278208A1

公开(公告)日：2024-08-22

申请号：US18572034

申请日：2022-06-23

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Joseph M. Falkowski ,  Mary S. Abdulkarim ,  Sophie Liu ,  Scott J. Weigel ,  Trong D. Pham

IPC: B01J20/22 ,  B01J20/02 ,  B01J20/28 ,  B01J20/30

CPC classification number: B01J20/226 ,  B01J20/0225 ,  B01J20/0237 ,  B01J20/0244 ,  B01J20/0251 ,  B01J20/0288 ,  B01J20/0296 ,  B01J20/28066 ,  B01J20/28071 ,  B01J20/28073 ,  B01J20/28076 ,  B01J20/3085

Abstract: Provided are metal-organic frameworks made by the process of comprising the steps of reacting a first metal source that can generate a tetravalent metal cation in solution, a linear dicarboxylic acid, a second metal source that can generate a divalent cation in solution, and one or more monocarboxylic acid modulators in a solvent to provide a reaction solution. The reaction solution is heated to provide a metal-organic framework having between about 0 wt. % to 10 wt. % of divalent cation, surface area between about 1100 m2/g and 2700 m2/g, a porosity of between about 0.45 cc/g and 1.1 cc/g, and a relative intensity equal to or greater than 0.35 and a peak width ratio of less than 3.0.

公开(公告)号：US11865515B2

公开(公告)日：2024-01-09

申请号：US17457677

申请日：2021-12-06

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Brian M. Weiss ,  Sophie Liu ,  Joseph M. Falkowski ,  Marc R. Schreier ,  Herb W. Barry

IPC: B01J21/04 ,  B01J21/10 ,  B01J23/00 ,  B01J23/02 ,  B01J23/10 ,  B01J23/30 ,  B01J23/32 ,  B01J23/34 ,  B01J37/02 ,  C07C5/333

CPC classification number: B01J23/32 ,  B01J23/002 ,  B01J23/005 ,  B01J23/02 ,  B01J23/30 ,  B01J37/0215 ,  C07C5/3332 ,  B01J21/04 ,  B01J21/10 ,  B01J2523/12 ,  B01J2523/22 ,  B01J2523/31 ,  B01J2523/69 ,  B01J2523/72 ,  C07C2523/02 ,  C07C2523/30 ,  C07C2523/32

Abstract: An active material useful in an oxidative dehydrogenation reactor system has an active phase, and a mixed metal oxide support phase. The active phase includes a transition metal oxide such as manganese oxide, which is reversibly oxidizable and/or reducible between oxidized and reduced states. The support phase includes a mixed metal oxide of a two or more IUPAC Group 2-14 elements. The active phase can also include a promoter such as Na-WO4 and/or a selectivity modifier such as Al or ceria. Also, a reactor including the active material in a reactor, a method of making the active material, and a method of using the active material in a regenerative reaction process.

公开(公告)号：US11773335B2

公开(公告)日：2023-10-03

申请号：US17643044

申请日：2021-12-07

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Brian M. Weiss ,  Sophie Liu ,  Michael R. Harper, Jr. ,  Herbert W. Barry ,  Changmin Chun ,  Barrington S. Goldson ,  Justin R. Johnson ,  Faria Nusrat

IPC: C10G11/12 ,  C10G11/18

CPC classification number: C10G11/182 ,  C10G11/12 ,  C10G2300/703

Abstract: Systems and methods are provided for using a reverse flow reactor (or another reactor with flows in opposing directions at different parts of a process cycle) for pyrolysis of hydrocarbons. The systems and methods can include a reactor that includes a combustion catalyst to initiate and/or maintain combustion within the reactor in a controlled manner during the heating and/or regeneration portion(s) of the reaction cycle. A fuel can also be used that has a greater resistance to auto-combustion, such as a fuel that is composed primarily of methane and/or other hydrocarbons. During operation, the temperature in at least an initial portion of the reactor can be maintained at a temperature so that auto-ignition of the auto-combustion resistant fuel injected during the heating step(s) is reduced or minimized. This can allow combustion to be initiated when the auto-combustion resistant fuel comes into contact with the catalyst. Additionally, the amount and positioning of the catalyst within the reactor can be controlled so that combustion of the fuel takes place over a substantially longer period of time than combustion during a conventional reactor heating step. Because the fuel is moving within the reactor during combustion, extending the combustion time results in a substantial expansion of the volume where combustion occurs. Optionally in combination with an improved reaction cycle, this can expand the portion of the reactor that is directly heated by combustion, allowing for an improved temperature distribution within the reactor during the pyrolysis step.