公开(公告)号：US20240286977A1

公开(公告)日：2024-08-29

申请号：US18438462

申请日：2024-02-10

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narenda Joshi

IPC: C07C4/06 ,  B01J21/04 ,  B01J29/16 ,  B01J29/40 ,  B01J29/48 ,  B01J29/78 ,  B01J29/90 ,  B01J35/40 ,  B01J35/61 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08 ,  B01J38/02 ,  B01J38/12 ,  C10G11/05 ,  C10G11/10 ,  C10G11/18

CPC classification number: C07C4/06 ,  B01J21/04 ,  B01J29/166 ,  B01J29/40 ,  B01J29/48 ,  B01J29/7815 ,  B01J29/90 ,  B01J35/40 ,  B01J35/615 ,  B01J35/617 ,  B01J35/618 ,  B01J37/0009 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/08 ,  B01J38/02 ,  B01J38/12 ,  C10G11/05 ,  C10G11/10 ,  C10G11/182 ,  B01J2229/186 ,  B01J2229/42 ,  C07C2521/04 ,  C07C2521/10 ,  C07C2529/08 ,  C07C2529/40 ,  C07C2529/70

Abstract: The addition of small amounts of alkaline earth metal oxides (CaO, MgO) as the isomerization function and transition metal oxides (such as MoO3, WO3) as the metathesis function significantly enhances the production of propylene using zeolites. Once the light olefins are formed by cracking on the acid sites of the zeolite, the 1-butene molecules undergo isomerization catalyzed by alkali earth metal oxides and then react with ethylene to produce more propylene.

公开(公告)号：US11261139B2

公开(公告)日：2022-03-01

申请号：US16590328

申请日：2019-10-01

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Eric Daniel Gauthier ,  Kelly Ann Coley

IPC: C07C2/58 ,  B01J29/08 ,  B01J29/70 ,  B01J37/30 ,  B01J37/02 ,  C01B39/20 ,  C01B39/02 ,  C01B39/46 ,  C10G29/20 ,  B01J29/90 ,  B01J29/12 ,  B01J38/10 ,  B01J29/74 ,  C07C2/56 ,  C07C2/54 ,  C07C9/14 ,  C07C9/16 ,  B01J29/14 ,  B01J37/08 ,  C10G99/00

Abstract: Improved alkylation catalysts, alkylation methods, and methods of making alkylation catalysts are described. The alkylation method comprises reaction over a solid acid, zeolite-based catalyst and can be conducted for relatively long periods at steady state conditions. The alkylation catalyst comprises a crystalline zeolite structure, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals, and further having a characteristic catalyst life property. Some catalysts may contain rare earth elements in the range of 10 to 35 wt %. One method of making a catalyst includes a calcination step following exchange of the rare earth element(s) conducted at a temperature of at least 575° C. to stabilize the resulting structure followed by an deammoniation treatment. An improved method of deammoniation uses low temperature oxidation.

公开(公告)号：US20200283354A1

公开(公告)日：2020-09-10

申请号：US16867487

申请日：2020-05-05

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narendra Joshi

IPC: C07C2/86 ,  C07C2/58 ,  B01J29/89 ,  B01J23/80 ,  B01J29/70 ,  B01J29/40 ,  B01J21/04 ,  B01J21/08 ,  B01J29/18 ,  B01J29/08 ,  B01J35/10 ,  B01J8/04 ,  C07C1/20 ,  C07C5/373 ,  C10G29/20 ,  C10G3/00 ,  B01J21/12 ,  B01J35/02

Abstract: Methods of simultaneously converting butanes and methanol to olefins over Ti-containing zeolite catalysts are described. The exothermicity of the alcohols to olefins reaction is matched by endothermicity of dehydrogenation reaction of butane(s) to light olefins resulting in a thermo-neutral process. The Ti-containing zeolites provide excellent selectivity to light olefins as well as exceptionally high hydrothermal stability. The coupled reaction may advantageously be conducted in a staged reactor with methanol/DME conversion zones alternating with zones for butane(s) dehydrogenation. The resulting light olefins can then be reacted with iso-butane to produce high-octane alkylate. The net result is a highly efficient and low cost method for converting methanol and butanes to alkylate.

公开(公告)号：US11492307B2

公开(公告)日：2022-11-08

申请号：US16867487

申请日：2020-05-05

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narendra Joshi

IPC: C07C2/86 ,  C07C2/58 ,  B01J29/89 ,  B01J23/80 ,  B01J29/70 ,  B01J29/40 ,  B01J21/04 ,  B01J21/08 ,  B01J29/18 ,  B01J29/08 ,  B01J35/10 ,  B01J8/04 ,  C07C1/20 ,  C07C5/373 ,  C10G29/20 ,  C10G3/00 ,  B01J21/12 ,  B01J35/02

Abstract: Methods of simultaneously converting butanes and methanol to olefins over Ti-containing zeolite catalysts are described. The exothermicity of the alcohols to olefins reaction is matched by endothermicity of dehydrogenation reaction of butane(s) to light olefins resulting in a thermo-neutral process. The Ti-containing zeolites provide excellent selectivity to light olefins as well as exceptionally high hydrothermal stability. The coupled reaction may advantageously be conducted in a staged reactor with methanol/DME conversion zones alternating with zones for butane(s) dehydrogenation. The resulting light olefins can then be reacted with iso-butane to produce high-octane alkylate. The net result is a highly efficient and low cost method for converting methanol and butanes to alkylate.

公开(公告)号：US11364482B2

公开(公告)日：2022-06-21

申请号：US16876957

申请日：2020-05-18

Applicant: Exelus, Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narendra Joshi ,  Grace Brock

IPC: C07C5/00 ,  B01J23/00 ,  B01J37/08 ,  B01J37/04 ,  B01J37/06 ,  B01J37/03 ,  B01J37/02 ,  B01J21/06 ,  B01J8/02 ,  B01J35/08 ,  B01J35/10 ,  B01J35/02 ,  C07C5/333 ,  B01J23/06

Abstract: A catalyst, methods of making, and process of dehydrogenating paraffins utilizing the catalyst. The catalyst includes at least 20 mass % Zn, a catalyst support and a catalyst stabilizer. The catalyst is further characterizable by physical properties such as activity parameter measured under specified conditions. The catalyst may also be disposed on a porous support in an attrition-resistant form and used in a fluidized bed reactor.

公开(公告)号：US20200031733A1

公开(公告)日：2020-01-30

申请号：US16590328

申请日：2019-10-01

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Eric Daniel Gauthier ,  Kelly Ann Coley

IPC: C07C2/58 ,  B01J29/08 ,  B01J29/70 ,  B01J37/30 ,  B01J37/02 ,  C01B39/20 ,  C01B39/02 ,  C01B39/46 ,  B01J29/12 ,  B01J29/14 ,  B01J37/08 ,  C10G29/20 ,  B01J29/90 ,  B01J38/10 ,  B01J29/74

Abstract: Improved alkylation catalysts, alkylation methods, and methods of making alkylation catalysts are described. The alkylation method comprises reaction over a solid acid, zeolite-based catalyst and can be conducted for relatively long periods at steady state conditions. The alkylation catalyst comprises a crystalline zeolite structure, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals, and further having a characteristic catalyst life property. Some catalysts may contain rare earth elements in the range of 10 to 35 wt %. One method of making a catalyst includes a calcination step following exchange of the rare earth element(s) conducted at a temperature of at least 575° C. to stabilize the resulting structure followed by an deammoniation treatment. An improved method of deammoniation uses low temperature oxidation.

公开(公告)号：US20190218158A1

公开(公告)日：2019-07-18

申请号：US16246462

申请日：2019-01-12

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narendra Joshi

IPC: C07C2/86 ,  C07C2/58 ,  B01J21/12 ,  B01J29/08 ,  B01J29/70 ,  B01J35/02 ,  B01J35/10 ,  C07C5/373 ,  C10G29/20 ,  C10G3/00 ,  B01J29/18 ,  B01J21/08 ,  B01J21/04 ,  B01J29/40 ,  B01J23/80 ,  B01J29/89 ,  C07C1/20 ,  B01J8/04

CPC classification number: C07C2/864 ,  B01J8/04 ,  B01J21/04 ,  B01J21/08 ,  B01J21/12 ,  B01J23/80 ,  B01J29/08 ,  B01J29/087 ,  B01J29/18 ,  B01J29/40 ,  B01J29/7007 ,  B01J29/7057 ,  B01J29/89 ,  B01J35/023 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1057 ,  B01J2523/00 ,  C07C1/20 ,  C07C2/58 ,  C07C2/865 ,  C07C5/373 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2521/12 ,  C07C2523/755 ,  C07C2523/80 ,  C07C2529/08 ,  C07C2529/18 ,  C07C2529/40 ,  C07C2529/89 ,  C10G3/49 ,  C10G29/205 ,  C07C11/02 ,  C07C11/08 ,  C07C9/21 ,  B01J2523/27 ,  B01J2523/41 ,  B01J2523/47 ,  B01J2523/847

Abstract: Methods of simultaneously converting butanes and methanol to olefins over Ti-containing zeolite catalysts are described. The exothermicity of the alcohols to olefins reaction is matched by endothermicity of dehydrogenation reaction of butane(s) to light olefins resulting in a thermo-neutral process. The Ti-containing zeolites provide excellent selectivity to light olefins as well as exceptionally high hydrothermal stability. The coupled reaction may advantageously be conducted in a staged reactor with methanol/DME conversion zones alternating with zones for butane(s) dehydrogenation. The resulting light olefins can then be reacted with iso-butane to produce high-octane alkylate. The net result is a highly efficient and low cost method for converting methanol and butanes to alkylate.

公开(公告)号：US20240207821A1

公开(公告)日：2024-06-27

申请号：US18393554

申请日：2023-12-21

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Narenda Joshi ,  Sankaran Sundaresan

IPC: B01J23/18 ,  B01J23/10 ,  B01J35/40 ,  B01J35/61 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  B01J38/02 ,  C10G11/04

CPC classification number: B01J23/18 ,  B01J23/10 ,  B01J35/40 ,  B01J35/613 ,  B01J37/0201 ,  B01J37/033 ,  B01J37/036 ,  B01J37/08 ,  B01J38/02 ,  C10G11/04 ,  C10G2300/1085 ,  C10G2300/70

Abstract: A mixed metal oxide Selective Oxygen Carrier (SOC) suitable for the selective oxidation of hydrogen comprising bismuth oxides, rare earth oxides, and a dopant of Ti, Zr, and Hf and is characterizable by a high level of oxygen carrying capacity, selectivity and stability. The SOC can be synthesized using a sol gel procedure, co-precipitating salts, or the incipient wetness method. The invention includes a process of dehydrogenating a paraffin over a SOC. A SOC can also be used to catalytically crack hydrocarbons.

公开(公告)号：US11851386B2

公开(公告)日：2023-12-26

申请号：US17966697

申请日：2022-10-14

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Zawer Wojokh ,  Narendra Joshi

IPC: C07C2/62 ,  B01J29/08 ,  B01J29/14 ,  B01J37/30 ,  B01J37/08 ,  B01J29/12 ,  B01J29/00

CPC classification number: C07C2/62 ,  B01J29/005 ,  B01J29/082 ,  B01J29/085 ,  B01J29/087 ,  B01J29/12 ,  B01J29/123 ,  B01J29/126 ,  B01J29/14 ,  B01J29/143 ,  B01J29/146 ,  B01J37/088 ,  B01J37/30 ,  B01J2229/183 ,  B01J2229/37 ,  C07C2523/10 ,  C07C2523/42 ,  C07C2523/44 ,  C07C2529/89

Abstract: This invention describes methods of alkylating isobutane which include a catalytic reaction system comprising a crystalline zeolite catalyst and a rare earth-modified molecular sieve adsorbent (RE-MSA). The crystalline zeolite catalyst comprises sodalite cages and supercages, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals; and up to 5 wt % of Pt, Pd and or Ni, and acid-site density (including both Lewis and Brønsted acid sites) of at least 100 mole/gm. The RE-modified molecular sieve adsorbent (Re-MSA) comprising sodalite cages and supercages, a Si/Al molar ratio of 20 or less, less than 1 wt % of alkali metals, RE (rare earth elements) in the range of 10 to 30 wt % and transition metals selected from groups 9-11 in the range from 2 wt % to 10 wt; and acid-site density of no more than 30 mole/gm. The invention also includes methods of making RE-MSA.

公开(公告)号：US20230119464A1

公开(公告)日：2023-04-20

申请号：US17966697

申请日：2022-10-14

Applicant: Exelus Inc.

Inventor： Mitrajit Mukherjee ,  Vamsi M. Vadhri ,  Zawer Wojokh ,  Narendra Joshi

IPC: C07C2/62 ,  B01J29/08 ,  B01J29/14 ,  B01J37/30 ,  B01J37/08

Abstract: This invention describes methods of alkylating isobutane which include a catalytic reaction system comprising a crystalline zeolite catalyst and a rare earth-modified molecular sieve adsorbent (RE—MSA). The crystalline zeolite catalyst comprises sodalite cages and supercages, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals; and up to 5 wt% of Pt, Pd and or Ni, and acid-site density (including both Lewis and Brønsted acid sites) of at least 100 µmole/gm. The RE-modified molecular sieve adsorbent (Re—MSA) comprising sodalite cages and supercages, a Si/Al molar ratio of 20 or less, less than 1 wt% of alkali metals, RE (rare earth elements) in the range of 10 to 30 wt% and transition metals selected from groups 9-11 in the range from 2 wt% to 10 wt; and acid-site density of no more than 30 µmole/gm. The invention also includes methods of making RE—MSA.