-
公开(公告)号：US12036538B2
公开(公告)日：2024-07-16
申请号：US17426979
申请日：2019-02-02
Inventor： Hongchao Liu , Shiping Liu , Wenliang Zhu , Zhongmin Liu , Xiangang Ma , Yong Liu , Ziqiao Zhou , Youming Ni
CPC classification number: B01J29/18 , B01J6/001 , B01J2229/16 , B01J2229/37 , B01J2229/38
Abstract: Provided are a molecular sieve catalyst, a preparation method therefor, an application thereof. The molecular sieve catalyst contains a modified Na-MOR molecular sieve, and the modification comprises: organic ammonium salt exchange, dealumination treatment, and ammonium ion exchange. The catalyst obtained by the method is used in dimethyl ether for one-step production of methyl acetate. The catalyst has high activity and stable performance, and the needs of industrial production can be satisfied.
-
公开(公告)号：US11111200B2
公开(公告)日：2021-09-07
申请号：US16463415
申请日：2016-11-25
Inventor： Lei Shi , Zongmin Liu , Youming In , Wenliang Zhu , Yong Liu , Hongchao Liu
Abstract: The present invention provides a method for preparing acrylic acid and methyl acrylate. The method comprises passing the feed gas containing dimethoxymethane and carbon monoxide through a solid acid catalyst to generate acrylic acid and methyl acrylate with a high conversion rate and selectivity at a reaction temperature in a range from 180 to 400 and a reaction pressure in a range from 0.1 MPa to 15.0 MPa, the mass space velocity of dimethoxymethane in the feed gas is in a range from 0.05 h−1 to 10.0 h−1, and the volume percentage of dimethoxymethane in the feed gas is in a range from 0.1% to 95%.
-
公开(公告)号：US10287233B2
公开(公告)日：2019-05-14
申请号：US15743936
申请日：2015-12-08
Inventor： Hongchao Liu , Wenliang Zhu , Yong Liu , Youming Ni , Zhongmin Liu , Linying Wang , Peng Tian
IPC: B01J29/70 , B01J29/74 , B01J29/76 , C07C67/37 , C07C69/14 , C07C29/147 , C07C51/377
Abstract: The present invention provides a method for producing methyl acetate, and the method comprises a step in which dimethyl ether and a raw gas containing carbon monoxide and hydrogen go through a reactor loaded with a catalyst for carrying out a carbonylation reaction; wherein the catalyst contains an acidic EMT zeolite molecular sieve. The present invention has provided a new method for producing methyl acetate. In the method of the present invention, the carbonylation is carried out in the presence of the catalyst containing the acidic EMT zeolite molecular sieve, and the reaction activity is high, and the stability has been significantly improved, meeting the requirement of industrial production.
-
公开(公告)号：US10059649B2
公开(公告)日：2018-08-28
申请号：US15103076
申请日：2013-12-16
Inventor： Yong Liu , Wenliang Zhu , Hongchao Liu , Youming Ni , Zhongmin Liu , Shuanghe Meng , Lina Li , Shiping Liu , Hui Zhou
IPC: C07C29/154 , C07C29/149 , B01J23/72 , B01J23/78 , B01J23/80 , B01J23/86 , B01J23/889 , C07C29/156
CPC classification number: C07C29/154 , B01J23/72 , B01J23/78 , B01J23/80 , B01J23/868 , B01J23/8892 , C07C29/149 , C07C29/156 , C07C2521/04 , C07C2521/10 , C07C2523/02 , C07C2523/06 , C07C2523/26 , C07C2523/28 , C07C2523/34 , C07C2523/72 , C07C2523/745 , C07C2523/755 , Y02P20/52 , C07C31/04 , C07C31/08
Abstract: A method for producing ethanol and coproducing methanol on a catalyst in a reactor using a co-feed of a synthesis gas and acetate as a reaction raw material comprising passing a raw material gas containing an acetate and a synthesis gas through a reactor loaded with a catalyst to produce ethanol and coproduce methanol under conditions of a reaction temperature of 150-350° C., a reaction pressure of 0.1-20.0 MPa, a reaction volume hourly space velocity of 100-45000 mlg−1h−1, and an acetate weight hourly space velocity of 0.01-5.0 h−1; and the active components of the catalyst are copper and optionally zinc and/or aluminum, which greatly facilitates the conversion of carbon monoxide to methanol, while an extremely high activity of acetate hydrogenation is maintained.
-
公开(公告)号：US11247959B2
公开(公告)日：2022-02-15
申请号：US17054894
申请日：2018-08-01
Inventor： Youming Ni , Wenliang Zhu , Zhongmin Liu , Yong Liu , Hongchao Liu , Xiangang Ma , Shiping Liu
Abstract: Provided is a method for directly preparing dimethyl ether by synthesis gas, the method comprises: the synthesis gas is passed through a reaction zone carrying a catalyst, and reacted under the reaction conditions sufficient to convert at least a portion of the raw materials to obtain the reaction effluent comprising dimethyl ether; and the dimethyl ether is separated from the reaction effluent, wherein the catalyst is zinc aluminum spinel oxide. In the present invention, only one zinc aluminum spinel oxide catalyst is used, which can make the synthesis gas to highly selectively form dimethyl ether, the catalyst has good stability and can be regenerated. The method of the present invention realizes the production of dimethyl ether in one step by the synthesis gas, and reduces the large energy consumption problem caused by step-by-step production.
-
Patent Agency Ranking
公开(公告)号：US10508073B2
公开(公告)日：2019-12-17
申请号：US15743698
申请日：2015-12-08
Inventor： Youming Ni , Wenliang Zhu , Yong Liu , Hongchao Liu , Zhongmin Liu , Miao Yang , Peng Tian
IPC: C07C67/37 , C07C69/708 , B01J29/85 , B01J35/04
Abstract: The present application provides a method for preparing acetal carbonyl compound used as an intermediate for producing ethylene glycol, which comprises a step in which a raw material acetal and a raw gas carbon monoxide go through a reactor loaded with a catalyst containing an acidic microporous silicoaluminophosphate molecular sieve, for carrying out a carbonylation reaction. In the method of the present invention, the conversion rate of the raw material acetal is high, and the selectivity of acetal carbonylation is high, and the catalyst life is long, and no additional solvent is needed in the reaction process, and the reaction condition is relatively mild, and the process is continuous, showing the potential for industrial application. Moreover, the product of acetal carbonyl compound can be used for producing ethylene glycol by hydrogenation followed by hydrolysis.
-
公开(公告)号：US10087135B2
公开(公告)日：2018-10-02
申请号：US15743904
申请日：2015-12-08
Inventor： Hongchao Liu , Wenliang Zhu , Youming Ni , Yong Liu , Zhongmin Liu , Linying Wang , Peng Tian
Abstract: The present invention provides a method for producing a light fatty acid alkyl ester with the formula of R1—COO—R2, and the method comprises a step in which a alkyl ether with formula of R1—O—R2 and a raw gas containing carbon monoxide go through a reactor loaded with a catalyst for carrying out a carbonylation reaction; wherein the catalyst contains an acidic EMT zeolite molecular sieve; wherein R1 and R2 are independently selected from C1-C4 alkyl groups. The present invention has provided a new method for producing light fatty acid alkyl ester. In the method of the present invention, the carbonylation is carried out in the presence of the catalyst containing the acidic EMT zeolite molecular sieve, and the reaction activity is high, and the stability has been significantly improved, meeting the requirement of industrial production.
-
公开(公告)号：US09440226B2
公开(公告)日：2016-09-13
申请号：US14650589
申请日：2014-01-28
Inventor： Youming Ni , Wenliang Zhu , Hongchao Liu , Yong Liu , Zhongmin Liu , Shuanghe Meng , Lina Li , Shiping Liu , Hui Zhou
CPC classification number: B01J31/0244 , B01J29/18 , B01J31/0237 , B01J31/0238 , B01J37/0203 , B01J2229/34 , C07C67/37 , C07C69/14
Abstract: The present invention provides a method for preparing methyl acetate, in which a feed gas containing an organic amine, dimethyl ether, carbon monoxide and optional hydrogen gas goes through a reactor loaded with a H-type mordenite catalyst, to produce methyl acetate; wherein said H-type mordenite catalyst is a H-type mordenite catalyst with adsorption of an organic amine. The method in the present invention improves the catalyst stability and prolongs the catalyst life, by using the H-type mordenite catalyst with adsorption of an organic amine as the catalyst and adding the organic amine in the feed gas to replenish the organic amine desorbed from the catalyst during the reaction.
Abstract translation: 本发明提供了一种制备乙酸甲酯的方法，其中含有有机胺，二甲醚，一氧化碳和任选的氢气的进料气体经过负载有H型丝光沸石催化剂的反应器，生产乙酸甲酯; 其中所述H型丝光沸石催化剂是吸附有机胺的H型丝光沸石催化剂。 本发明的方法通过使用H型丝光沸石催化剂吸附有机胺作为催化剂，并在进料气体中加入有机胺，从而提高催化剂的稳定性并延长催化剂寿命，从而补充从 催化剂。
-
公开(公告)号：US11225443B2
公开(公告)日：2022-01-18
申请号：US16763015
申请日：2017-11-21
Inventor： Youming Ni , Wenliang Zhu , Zhongmin Liu , Yong Liu , Zhiyang Chen , Hongchao Liu , Xiangang Ma , Shiping Liu
IPC: C07C2/86 , B01J21/18 , B01J29/40 , B01J29/46 , B01J29/48 , B01J35/02 , B01J37/00 , B01J37/02 , B01J37/03 , B01J37/04 , B01J37/06 , B01J37/08
Abstract: A method for directly preparing p-xylene from synthetic gas and aromatic hydrocarbon. The method includes contacting the feedstock containing synthetic gas and aromatic hydrocarbon excluding p-xylene with the catalyst in the reaction zone under reaction conditions sufficient to convert at least part of the feedstock to obtain a reaction effluent containing p-xylene; and separating p-xylene from the reaction effluent, where the catalyst includes a highly dispersed metal oxide material confined by an inert carrier, an acidic molecular sieve, and optionally at least one of graphite powder and dispersant, where in the highly dispersed metal oxide material confined by the inert carrier, the inert carrier is at least one of silicon oxide and alumina, and the content of the metal oxide in terms of metal is less than or equal to 10% by mass calculated based on the weight of the highly dispersed metal oxide material confined by the inert carrier.
-
公开(公告)号：US11014076B2
公开(公告)日：2021-05-25
申请号：US16343870
申请日：2017-08-22
Inventor： Youming Ni , Wenliang Zhu , Zhongmin Liu , Zhiyang Chen , Yong Liu , Hongchao Liu , Xiangang Ma , Shiping Liu
IPC: B01J29/06 , B01J29/40 , B01J23/00 , B01J29/44 , B01J29/46 , B01J29/48 , B01J29/90 , B01J37/03 , B01J37/04 , B01J38/12 , C01B39/02 , C07C1/04 , B01J38/14 , B01J21/06 , B01J21/04 , B01J35/02 , B01J23/72 , B01J23/26 , B01J37/00 , B01J35/00 , B01J38/02 , B01J23/44 , B01J23/06 , B01J23/90 , B01J29/76 , B01J29/08 , B01J29/22 , B01J29/16 , B01J29/18 , B01J29/26 , B01J29/24 , B01J29/70 , B01J29/78 , B01J29/74 , B01J29/72
Abstract: A catalyst for synthesizing aromatic hydrocarbons, a preparation method thereof and a method for synthesizing aromatic hydrocarbons by using the catalyst. The catalyst comprises acidic molecular sieve particles and zinc-aluminum composite oxide particles. The catalyst has relatively high selectivity to aromatic hydrocarbons, particularly BTX, stable performance, and a long single-pass life.
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.021 seconds)
