公开(公告)号：US20210395170A1

公开(公告)日：2021-12-23

申请号：US17352632

申请日：2021-06-21

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Zewei Chen ,  Peter Oladipupo

IPC: C07C5/327 ,  B01J19/00 ,  B01J19/24

Abstract: Systems and processes for dehydrogenating one or more alkanes using electrically heated dehydrogenation reactors. The source of electric energy or power can be a power grid, solar panel, windmill, hydropower, nuclear power, fuel cell, gas turbines, steam turbines, portable generator or the like. The systems and processes provided herein result in a simpler dehydrogenation process which is particularly beneficial at a small scale and at remote locations, including the well site.

公开(公告)号：US20210139796A1

公开(公告)日：2021-05-13

申请号：US16635778

申请日：2018-09-06

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Jeffrey J. Siirola ,  Taufik Ridha ,  Yuri Li ,  Fabio H. Ribeiro ,  Jeffrey T. Miller

IPC: C10G59/02 ,  B01J29/46 ,  B01J21/02

Abstract: A process to catalytically transform natural gas liquid (NGL) into higher molecular weight hydrocarbons includes providing an NGL stream, catalytically dehydrogenating at least a portion of the NGL stream components to their corresponding alkene derivatives, catalytically oligomerizing at least a portion of the alkenes to higher molecular weight hydrocarbons and recovering the higher molecular weight hydrocarbons. The NGL stream can be extracted from a gas stream such as a gas stream coming from shale formations. The higher molecular weight hydrocarbons can be hydrocarbons that are liquid at ambient temperature and ambient pressure.

公开(公告)号：US09738799B2

公开(公告)日：2017-08-22

申请号：US14824913

申请日：2015-08-12

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Ruihong Zhang ,  Bryce Chryst Walker ,  Carol Handwerker

IPC: B05D5/12 ,  C09D7/12 ,  C01B19/00 ,  H01L21/02 ,  H01L31/032 ,  H01L31/072 ,  H01L31/18

CPC classification number: C09D7/63 ,  C01B19/002 ,  C09D7/41 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02568 ,  H01L21/02601 ,  H01L21/02628 ,  H01L31/0326 ,  H01L31/072 ,  H01L31/1864 ,  Y02E10/50

Abstract: A direct solution method based on a versatile amine-thiol solvent mixture which dissolves elemental metals, metal salts, organometallic complexes, metal chalcogenides, and metal oxides is described. The metal containing and metal chalcogenide precursors can be prepared by dissolving single or multiple metal sources, chalcogens, and/or metal chalcogenide compounds separately, simultaneously, or stepwise. Multinary metal chalcogenides containing at least one of copper, zinc, tin, indium, gallium, cadmium, germanium, and lead, with at least one of sulfur, selenium, or both are obtained from the above-mentioned metal chalcogenide precursors in the form of thin films, nanoparticles, inks, etc. Furthermore, infiltration of metal containing compounds into a porous structure can be achieved using the amine-thiol based precursors. In addition, due to the appreciable solubility of metal sources, metal chalcogenides, and metal oxides in the mixture of amine(s) and thiol(s), this solvent mixture can be used to remove these materials from a system.

公开(公告)号：US20160049542A1

公开(公告)日：2016-02-18

申请号：US14824913

申请日：2015-08-12

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Ruihong Zhang ,  Bryce Chryst Walker ,  Carol Handwerker

IPC: H01L31/18 ,  C01B19/00 ,  C09D7/12

CPC classification number: C09D7/63 ,  C01B19/002 ,  C09D7/41 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02568 ,  H01L21/02601 ,  H01L21/02628 ,  H01L31/0326 ,  H01L31/072 ,  H01L31/1864 ,  Y02E10/50

Abstract: A direct solution method based on a versatile amine-thiol solvent mixture which dissolves elemental metals, metal salts, organometallic complexes, metal chalcogenides, and metal oxides is described. The metal containing and metal chalcogenide precursors can be prepared by dissolving single or multiple metal sources, chalcogens, and/or metal chalcogenide compounds separately, simultaneously, or stepwise. Multinary metal chalcogenides containing at least one of copper, zinc, tin, indium, gallium, cadmium, germanium, and lead, with at least one of sulfur, selenium, or both are obtained from the above-mentioned metal chalcogenide precursors in the form of thin films, nanoparticles, inks, etc. Furthermore, infiltration of metal containing compounds into a porous structure can be achieved using the amine-thiol based precursors. In addition, due to the appreciable solubility of metal sources, metal chalcogenides, and metal oxides in the mixture of amine(s) and thiol(s), this solvent mixture can be used to remove these materials from a system.

公开(公告)号：US12017983B2

公开(公告)日：2024-06-25

申请号：US18169086

申请日：2023-02-14

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Zewei Chen ,  Peter Oladipupo

IPC: C07C5/327 ,  B01J19/00 ,  B01J19/24

CPC classification number: C07C5/327 ,  B01J19/0013 ,  B01J19/2415 ,  B01J2219/00081 ,  B01J2219/00085 ,  B01J2219/00132

Abstract: Systems and processes for dehydrogenating one or more alkanes using electrically heated dehydrogenation reactors. The source of electric energy or power can be a power grid, solar panel, windmill, hydropower, nuclear power, fuel cell, gas turbines, steam turbines, portable generator or the like. The systems and processes provided herein result in a simpler dehydrogenation process which is particularly beneficial at a small scale and at remote locations, including the well site.

公开(公告)号：US11912655B2

公开(公告)日：2024-02-27

申请号：US17747637

申请日：2022-05-18

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Yiru Li

IPC: C07C5/333 ,  C07C2/06 ,  C10L3/10 ,  C07C11/02 ,  C10G5/00

CPC classification number: C07C5/333 ,  C07C2/06 ,  C10L3/102 ,  C10L3/106 ,  C07C11/02 ,  C10G5/00

Abstract: Processes and systems for upgrading natural gas liquids. At least a portion of the natural gas liquid components in a shale gas stream can be dehydrogenated to their corresponding olefin derivatives prior to separating any methane from the liquids. Further processing subsequent to dehydrogenation could include various separations, oligomerizing olefins produced in the dehydrogenation step, recovering desired products, etc. The order of the processing steps subsequent to dehydrogenation could be adjusted in various cases.

公开(公告)号：US20230227735A1

公开(公告)日：2023-07-20

申请号：US18183377

申请日：2023-03-14

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Jeffrey J. Siirola ,  Taufik Ridha ,  Yiru Li ,  Fabio H. Ribeiro ,  Jeffrey T. Miller

IPC: C10G59/02 ,  B01J21/02 ,  B01J29/46

CPC classification number: C10G59/02 ,  B01J21/02 ,  B01J29/46

Abstract: A process to catalytically transform natural gas liquid (NGL) into higher molecular weight hydrocarbons includes providing an NGL stream, catalytically dehydrogenating at least a portion of the NGL stream components to their corresponding alkene derivatives, catalytically oligomerizing at least a portion of the alkenes to higher molecular weight hydrocarbons and recovering the higher molecular weight hydrocarbons. The NGL stream can be extracted from a gas stream such as a gas stream coming from shale formations. The higher molecular weight hydrocarbons can be hydrocarbons that are liquid at ambient temperature and ambient pressure.

公开(公告)号：US11339104B2

公开(公告)日：2022-05-24

申请号：US16831993

申请日：2020-03-27

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Yiru Li

IPC: C07C5/333 ,  C07C2/06 ,  C10L3/10 ,  C10G5/00 ,  C07C11/02

Abstract: Processes and systems for upgrading natural gas liquids. At least a portion of the natural gas liquid components in a shale gas stream can be dehydrogenated to their corresponding olefin derivatives prior to separating any methane from the liquids. Further processing subsequent to dehydrogenation could include various separations, oligomerizing olefins produced in the dehydrogenation step, recovering desired products, etc. The order of the processing steps subsequent to dehydrogenation could be adjusted in various cases.

公开(公告)号：US20200308088A1

公开(公告)日：2020-10-01

申请号：US16831993

申请日：2020-03-27

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Yiru Li

IPC: C07C5/333 ,  C07C2/06 ,  C10L3/10

Abstract: Processes and systems for upgrading natural gas liquids. At least a portion of the natural gas liquid components in a shale gas stream can be dehydrogenated to their corresponding olefin derivatives prior to separating any methane from the liquids. Further processing subsequent to dehydrogenation could include various separations, oligomerizing olefins produced in the dehydrogenation step, recovering desired products, etc. The order of the processing steps subsequent to dehydrogenation could be adjusted in various cases.

公开(公告)号：US20200308086A1

公开(公告)日：2020-10-01

申请号：US16832092

申请日：2020-03-27

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Peter Oladipupo

IPC: C07C4/04 ,  C07C4/06 ,  C07C5/333 ,  B01J8/06 ,  B01J8/08 ,  B01J8/18

Abstract: A process for producing olefins by cracking paraffins in the presence of methane. In the conventional steam cracking processes for olefin production, steam is used as a diluent in the feed mixture to the thermal cracker. In the processes provided herein, methane replaces steam as a diluent in the feed mixture to the thermal cracker. Replacing steam with methane as a diluent has a potential for cost savings in the construction and operation of a thermal cracking plant for olefin production. In addition, it leads to a much simpler cracking process compared to the conventional steam cracking technology as in the state of the art.