公开(公告)号：US20200030778A1

公开(公告)日：2020-01-30

申请号：US16512688

申请日：2019-07-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Matthew S. Ide ,  Changmin Chun ,  Anastasios I. Skoulidas

IPC: B01J23/755 ,  B01J21/08 ,  B01J37/00 ,  C10G35/06 ,  C10J3/72 ,  B01J35/00 ,  B01J35/04 ,  B01J21/04 ,  B01J21/06 ,  B01J37/14 ,  B01J37/16 ,  B01J37/02 ,  B01J35/10

Abstract: Ceramic compositions with catalytic activity are provided, along with methods for using such catalytic ceramic compositions. The ceramic compositions correspond to compositions that can acquire increased catalytic activity by cyclic exposure of the ceramic composition to reducing and oxidizing environments at a sufficiently elevated temperature. The ceramic compositions can be beneficial for use as catalysts in reaction environments involving swings of temperature and/or pressure conditions, such as a reverse flow reaction environment. Based on cyclic exposure to oxidizing and reducing conditions, the surface of the ceramic composition can be converted from a substantially fully oxidized state to various states including at least some dopant metal particles supported on a structural oxide surface.

公开(公告)号：US10208260B2

公开(公告)日：2019-02-19

申请号：US15608070

申请日：2017-05-30

Applicant: ExxonMobil Research and Engineering Company

Inventor： Stuart S. Shih ,  Timothy L. Hilbert ,  Anastasios I. Skoulidas ,  Bryan A. Patel ,  Michael R. Chuba ,  Sean C. Smyth ,  Mohan Kalyanaraman

IPC: C10G65/02 ,  C10G45/02 ,  C10G45/62 ,  C10G45/64 ,  C10G65/04 ,  B01J8/00 ,  B01J8/18 ,  B01J8/24 ,  B01J29/70 ,  B01J29/72 ,  B01J23/40 ,  B01J29/74

Abstract: Systems and methods are provided for catalytically dewaxing a diesel boiling range feed. In some aspects, catalytic dewaxing can be performed at low hydrogen treat gas rates and/or low hydrogen purity conditions. In other aspects, the systems and methods can allow for distillate dewaxing while reducing or minimizing the amount of equipment required.

公开(公告)号：US11253845B2

公开(公告)日：2022-02-22

申请号：US15977040

申请日：2018-05-11

Applicant: ExxonMobil Research and Engineering Company

Inventor： Matthew S. Ide ,  Anastasios I. Skoulidas ,  Joseph A. Camisa ,  Jianxin J. Wu

IPC: B01J23/889 ,  B01J35/04 ,  B01J37/12 ,  B01J37/14 ,  B01J37/16 ,  C01B3/40 ,  B01J37/18 ,  B01J23/888 ,  B01J29/04

Abstract: Processes for transforming an inert metal component into an active metal catalyst are provided. Apparatus and methods using active metal catalyst prepared according the process described herein are also provided.

公开(公告)号：US20200338522A1

公开(公告)日：2020-10-29

申请号：US16838548

申请日：2020-04-02

Applicant: ExxonMobil Research and Engineering Company

Inventor： Everett J. O'Neal ,  Anastasios I. Skoulidas

IPC: B01J19/24 ,  C01B3/38 ,  B01J19/00

Abstract: Systems and methods are provided for improving the operation of groups of reverse flow reactors by operating reactors in a regeneration portion of the reaction cycle to have improved flue gas management. The flue gas from reactor(s) at a later portion of the regeneration step can be selectively used for recycle back to the reactors as a diluent/heat transport fluid. The flue gas from a reactor earlier in a regeneration step can be preferentially used as the gas vented from the system to maintain the desired volume of gas within the system. This results in preferential use of higher temperature flue gas for recycle and lower temperature flue gas for venting from the system. This improved use of flue gas within a reaction system including reverse flow reactors can allow for improved reaction performance while reducing or minimizing heat losses during the regeneration portion of the reaction cycle.

公开(公告)号：US20200331751A1

公开(公告)日：2020-10-22

申请号：US16838856

申请日：2020-04-02

Applicant: ExxonMobil Research and Engineering Company

Inventor： Everett J. O'Neal ,  Anastasios I. Skoulidas ,  Zhiyan Wang

IPC: C01B3/38 ,  C01B3/48 ,  C01B3/56 ,  B01J19/24 ,  B01J38/40 ,  B01D53/047

Abstract: Systems and methods are provided for performing hydrocarbon reforming within a reverse flow reactor environment (or another reactor environment with flows in opposing directions) while improving management of CO2 generated during operation of the reactor. The improved management of CO2 is achieved by making one or more changes to the operation of the reverse flow reactor. The changes can include using an air separation unit to provide an oxygen source with a reduced or minimized content of nitrogen and/or operating the reactor at elevated pressure during the regeneration stage. By operating the regeneration at elevated pressure, a regeneration flue gas can be generated that is enriched in CO2 at elevated pressure. The CO2-enriched stream can include primarily water as a contaminant, which can be removed by cooling while substantially maintaining the pressure of the stream. This can facilitate subsequent recovery and use of the CO2.

公开(公告)号：US10577243B2

公开(公告)日：2020-03-03

申请号：US15343778

申请日：2016-11-04

Applicant: ExxonMobil Research and Engineering Company

Inventor： Matthew S. Ide ,  John F. Brody ,  Jianxin Wu ,  Joshua W. Allen ,  Frank Hershkowitz ,  Arsam Behkish ,  Anastasios I. Skoulidas

IPC: C01B3/40 ,  B01J23/10 ,  B01J23/46 ,  B01J23/63 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08 ,  B01J38/02 ,  B01J23/89 ,  B01J8/04 ,  B01J23/83 ,  B01J35/00 ,  B01J37/00 ,  C01B3/46

Abstract: A reforming catalyst with improved surface area is provided by using high surface area alumina doped with a stabilizer metal as a catalyst support. The surface area of the catalyst can be higher than a typical reforming catalyst, and the surface area can also be maintained under high temperature operation. This can allow use of the catalyst for reforming in a higher temperature environment while maintaining a higher surface area, which can allow for improved dispersion and/or activity of an active metal such as rhodium on the catalyst support. The catalyst can be suitable for production of syngas from natural gas or other hydrocarbon-containing feeds.