公开(公告)号：US20220401922A1

公开(公告)日：2022-12-22

申请号：US17349986

申请日：2021-06-17

Applicant: ExxonMobil Research and Engineering Company

Inventor： Scott J. Weigel ,  Megan E. Witzke ,  Wesley Sattler ,  Brandon M. Carcuffe ,  Jihad M. Dakka ,  Ryan S. Dugan

IPC: B01J23/00 ,  B01J35/10 ,  B01J21/06 ,  B01J35/00 ,  B01J23/888 ,  C07C5/27 ,  B01J6/00 ,  B01J37/03

Abstract: Tungstated zirconium catalysts for paraffin isomerization may comprise: a mixed metal oxide that is at least partially crystalline and comprises tungsten, zirconium, and a variable oxidation state metal selected from Fe, Mn, Co, Cu, Ce, Ni, and any combination thereof. The mixed metal oxide comprises about 5 wt. % to about 25 wt. % tungsten, about 40 wt. % to about 70 wt. % zirconium, and about 0.01 wt. % to about 5 wt. % variable oxidation state metal, each based on a total mass of the mixed metal oxide. The mixed metal oxide has a total surface area of about 50 m2/g or greater as measured according to ISO 9277, and at least one of the following: an ammonia uptake of about 0.05 to about 0.3 mmol/g as measured by temperature programmed adsorption/desorption, or a collidine uptake of about 100 μmol/g or greater as measured gravimetrically.

公开(公告)号：US20220112082A1

公开(公告)日：2022-04-14

申请号：US17496592

申请日：2021-10-07

Applicant: ExxonMobil Research and Engineering Company

Inventor： Changmin Chun ,  Wesley Sattler ,  Joseph E. Gatt ,  Keith R. Hajkowski ,  Everett J. O'Neal ,  William R. Gunther ,  Anastasios Skoulidas

IPC: C01B3/38 ,  B01J35/10 ,  B01J37/08 ,  C01B3/40 ,  B01J29/74 ,  B01J23/46 ,  B01J21/04 ,  B01J23/10 ,  B01J23/755 ,  B01J23/00 ,  B01J35/00 ,  B01J35/04 ,  B01J37/03 ,  B01J37/04

Abstract: Catalyst systems are provided for reforming of hydrocarbons, along with methods for using such catalyst systems. The catalyst systems can be deposited or otherwise coated on a surface or structure, such as a monolith, to achieve improved activity and/or structural stability. The metal oxide support layer can correspond to a thermally stable metal oxide support layer, such as a metal oxide support layer that is thermally phase stable at temperatures of 800° C. to 1600° C. The catalyst systems can be beneficial for use in cyclical reaction environments, such as reverse flow reactors or other types of reactors that are operated using flows in opposing directions and different times within a reaction cycle.

公开(公告)号：US20220112432A1

公开(公告)日：2022-04-14

申请号：US17496644

申请日：2021-10-07

Applicant: ExxonMobil Research and Engineering Company

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

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.