-
公开(公告)号：US11819818B2
公开(公告)日：2023-11-21
申请号：US16947704
申请日：2020-08-13
Inventor： Chuansheng Bai , Jihad M. Dakka , Preeti Kamakoti , Aruna Ramkrishnan , Anjaneya S. Kovvali , Anita S. Lee
IPC: B01J23/80 , B01J29/46 , B01J35/02 , B01J37/04 , B01J37/08 , B01J37/10 , B01J37/00 , C07C41/01 , B01J37/12
CPC classification number: B01J29/46 , B01J23/80 , B01J35/023 , B01J35/026 , B01J37/0018 , B01J37/0027 , B01J37/0036 , B01J37/12 , C07C41/01
Abstract: A method of producing bifunctional catalysts by extrusion may include mixing an acid catalyst, a metal catalyst, optionally a binder, and a fluid to produce a dough; extruding the dough to form an extrudate; producing a powder from the extrudate; and calcining the powder to produce an acid/metal bifunctional catalyst. Such acid/metal bifunctional catalysts may be useful in, among other things, converting syngas to dimethyl ether in a single reactor.
-
Patent Agency Ranking
公开(公告)号：US11745168B2
公开(公告)日：2023-09-05
申请号：US17349986
申请日：2021-06-17
Inventor： Scott J. Weigel , Megan E. Witzke , Wesley Sattler , Brandon M. Carcuffe , Jihad M. Dakka , Ryan S. Dugan
IPC: B01J23/00 , B01J6/00 , B01J21/06 , B01J23/888 , B01J35/00 , B01J35/10 , B01J37/03 , C07C5/27 , B01J37/00
CPC classification number: B01J23/002 , B01J6/001 , B01J21/066 , B01J23/888 , B01J35/0026 , B01J35/1014 , B01J35/1019 , B01J37/03 , C07C5/2705 , B01J37/0009 , C07C2521/06 , C07C2523/888
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：US12030845B2
公开(公告)日：2024-07-09
申请号：US17807024
申请日：2022-06-15
Inventor： Wesley Sattler , Jihad M. Dakka , Guang Cao , Xinrui Yu , Brandon M. Carcuffe , Jason M. Golias , Scott J. Weigel , Carolyn M. Aimino , Megan E. Witzke
CPC classification number: C07C5/2705 , B01J21/066 , B01J23/002 , B01J23/30 , C07C2521/06 , C07C2523/30
Abstract: Isomerization of normal paraffins to form branched paraffins may be complicated by significant cracking of C7+ paraffins under isomerization reaction conditions. This issue may complicate upgrading of hydrocarbon feeds having significant quantities of heavier normal paraffins. Cracking selectivity may be decreased by combining one or more naphthenic compounds with a feed mixture comprising at least one C7+ normal paraffin and/or by utilizing tungstated zirconium catalysts having decreased tungsten loading. Further, C5 and C6 normal paraffins may undergo isomerization in the presence of C7+ normal paraffins. Methods for isomerizing normal paraffins may comprise: providing a feed mixture comprising at least C5-C7 normal paraffins and lacking normal paraffins larger than C8; and contacting the feed mixture with a bifunctional mixed metal oxide catalyst under isomerization reaction conditions effective to form a product mixture comprising one or more branched paraffins formed from each of the C5-C7 normal paraffins.
-
公开(公告)号：US20220403258A1
公开(公告)日：2022-12-22
申请号：US17807019
申请日：2022-06-15
Inventor： Xinrui Yu , Jihad M. Dakka , Guang Cao , Wesley Sattler
Abstract: Systems and methods for producing an isomerization product. One or more isomerization reactors comprising a catalyst may be used to process an isomerization feedstock comprising a primary n-paraffin reactant and hydrogen gas, and the isomerization reactor may be operated at a pressure parameter at which the partial pressure of the primary n-paraffin is within about 70% to about 130% of its equilibrium vapor pressure to isomerize the primary n-paraffin reactant.
-
公开(公告)号：US20220403253A1
公开(公告)日：2022-12-22
申请号：US17838406
申请日：2022-06-13
Inventor： Hyung Rae Kim , Jihad M. Dakka , Xiaochun Xu
IPC: C10G3/00
Abstract: Systems and methods are provided for increasing the yield of products generated during co-processing of biomass oil in a fluid catalytic cracking (FCC) system. The systems and methods can allow for increased yield by reducing or minimizing formation of carbon oxides, gas phase products, and/or coke yields during the co-processing. This can be achieved by adding a hydrogen-rich co-feed to the co-processing environment. Examples of hydrogen-rich co-feeds include high hydrogen content vacuum gas oil co-feed, high hydrogen content distillate co-feed, and/or high hydrogen content naphtha co-feed. Additionally or alternately, various types of fractions that contain a sufficient amount of hydrogen donor compounds can be used to reduce or minimize carbon oxide formation
-
公开(公告)号：US20220402838A1
公开(公告)日：2022-12-22
申请号：US17807024
申请日：2022-06-15
Inventor： Wesley Sattler , Jihad M. Dakka , Guang Cao , Xinrui Yu , Brandon M. Carcuffe , Jason M. Golias , Scott J. Weigel , Carolyn M. Aimino , Megan E. Witzke
Abstract: Isomerization of normal paraffins to form branched paraffins may be complicated by significant cracking of C7+ paraffins under isomerization reaction conditions. This issue may complicate upgrading of hydrocarbon feeds having significant quantities of heavier normal paraffins. Cracking selectivity may be decreased by combining one or more naphthenic compounds with a feed mixture comprising at least one C7+ normal paraffin and/or by utilizing tungstated zirconium catalysts having decreased tungsten loading. Further, C5 and C6 normal paraffins may undergo isomerization in the presence of C7+ normal paraffins. Methods for isomerizing normal paraffins may comprise: providing a feed mixture comprising at least C5-C7 normal paraffins and lacking normal paraffins larger than C8; and contacting the feed mixture with a bifunctional mixed metal oxide catalyst under isomerization reaction conditions effective to form a product mixture comprising one or more branched paraffins formed from each of the C5-C7 normal paraffins.
-
-
-
-
-
Search Results
16
records
(took 0.017 seconds)
