公开(公告)号：US10815162B2

公开(公告)日：2020-10-27

申请号：US16763026

申请日：2018-10-29

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Youming Ni ,  Wenliang Zhu ,  Zhongmin Liu ,  Yong Liu ,  Zhiyang Chen ,  Hongchao Liu ,  Xiangang Ma ,  Shiping Liu

IPC: C07C1/04 ,  B01J35/02 ,  B01J37/04 ,  B01J37/08 ,  B01J37/03 ,  B01J37/00 ,  B01J37/06 ,  B01J37/02 ,  B01J29/40 ,  B01J29/48 ,  B01J29/46 ,  B01J21/18

Abstract: A method for preparing aromatics from syngas, which includes a) contacting a raw material stream containing syngas with a catalyst in a reaction zone under reaction conditions sufficient to convert at least part of the raw material to obtain a reaction effluent; b) separating the reaction effluent to obtain at least a recycle stream containing gas-phase hydrocarbons having 1 to 4 carbon atoms and unconverted syngas and a liquid stream containing hydrocarbons having 5 or more carbon atoms; c) returning the recycle stream to the reaction zone; and d) separating aromatic products from the liquid stream, wherein the catalyst includes at least one of an inert carrier-confined highly dispersed metal oxide material, an acidic molecular sieve, and, optionally, graphite powder and a dispersant.

公开(公告)号：US10315973B2

公开(公告)日：2019-06-11

申请号：US15763296

申请日：2015-12-08

Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Inventor： Youming Ni ,  Wenliang Zhu ,  Yong Liu ,  Hongchao Liu ,  Lei Shi ,  Zhongmin Liu

IPC: C07C29/10 ,  C07C31/20 ,  B01J29/70 ,  B01J39/05 ,  B01J29/08 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J31/02

Abstract: This invention provides a method for preparing ethylene glycol by hydrolyzing ethylene glycol monomethyl ether. The method comprises passing a fresh raw material containing ethylene glycol monomethyl ether and water through a reaction zone loaded with a solid acid catalyst to react under the following conditions; separating the reacted mixture via a separation system to obtain a target product of ethylene glycol, by-products containing methanol, dimethyl ether and ethylene glycol-based derivatives, and an unreacted raw material containing ethylene glycol monomethyl ether and water; passing the target product of ethylene glycol into a product collection system; and passing methyl alcohol and dimethyl ether in the by-products into a by-product collection system; and after being mixed with the fresh raw materials containing ethylene glycol monomethyl ether and water, the ethylene glycol-based derivatives in the by-products and the unreacted raw material containing ethylene glycol monomethyl ether and water being recycled into the reaction zone, to realize the preparation of ethylene glycol by hydrolyzing ethylene glycol monomethyl ether. This invention provides a new process to realize the preparation of ethylene glycol by hydrolyzing ethylene glycol monomethyl ether. And in the method, the catalyst has long life and good stability.

公开(公告)号：US09708240B2

公开(公告)日：2017-07-18

申请号：US15105364

申请日：2013-12-23

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Youming Ni ,  Wenliang Zhu ,  Hongchao Liu ,  Yong Liu ,  Zhongmin Liu ,  Shuanghe Meng ,  Lina Li ,  Shiping Liu ,  Hui Zhou

IPC: C07C67/37 ,  C07C67/38 ,  C07C69/708

CPC classification number: C07C67/37 ,  C07C67/38 ,  C07C69/708

Abstract: A method for preparing a polyoxymethylene dimethyl ether carbonyl compound and/or methyl methoxyacetate as intermediates for producing ethylene glycol, which comprises passing a raw material: polyoxymethylene dimethyl ether or methylal together with carbon monoxide and hydrogen gas through a reactor carrying an acidic molecular sieve catalyst, and performing a reaction to prepare a corresponding product under an appropriate condition where no other solvent is added, in which the process of the reaction is a gas-liquid-solid three-phase reaction, the raw material of polyoxymethylene dimethyl ether or methylal has a high conversion rate, each product has a high selectivity, the catalyst has a long service life, additional solvents are not required to be used, and reaction conditions are relatively mild.

公开(公告)号：US12162831B2

公开(公告)日：2024-12-10

申请号：US17427199

申请日：2019-02-02

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Hongchao Liu ,  Wenliang Zhu ,  Zhongmin Liu ,  Shiping Liu ,  Xiangang Ma ,  Yong Liu ,  Youming Ni

IPC: C07C67/37 ,  B01J21/04 ,  B01J29/18

Abstract: Disclosed by the present application is a method for producing methyl acetate by means of the carbonylation of dimethyl ether. The method comprises: passing dimethyl ether and a feed gas comprising carbon monoxide through a reactor loaded with a solid acid catalyst for reaction so as to produce methyl acetate, the molar ratio of carbon monoxide to dimethyl ether being 0.05:1-0.5:1. The described method has the advantages of a low molar ratio of carbon monoxide to dimethy1 ether, a high conversion rate of carbon monoxide, a small gas circulation amount, low operation costs and so on.

公开(公告)号：US11292761B2

公开(公告)日：2022-04-05

申请号：US16647174

申请日：2017-09-29

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Hongchao Liu ,  Wenliang Zhu ,  Zhongmin Liu ,  Yong Liu ,  Shiping Liu ,  Fuli Wen ,  Youming Ni ,  Xiangang Ma

IPC: B01J8/04 ,  B01J8/06 ,  B01J29/70 ,  C07C51/10 ,  C07C67/36 ,  B01J23/00 ,  B01J23/889 ,  B01J29/18 ,  B01J29/40

Abstract: A method for directly producing methyl acetate and/or acetic acid from syngas, carried out in at least two reaction zones, including: feeding a raw material containing syngas into a first reaction zone to contact and react with a metal catalyst; allowing an obtained effluent to enter a second reaction zone directly or after the addition of carbon monoxide so as to contact and react with a solid acid catalyst; separating the obtained effluent to obtain product of acetate and/or acetic acid, and optionally returning a residual part to enter the first reaction zone and/or the second reaction zone to recycle the reaction. By the method above, the product selectivity of the product of methyl acetate or acetic acid is greater than 93%, and the quantity of methyl acetate and acetic acid may be adjusted according to processing.

公开(公告)号：US10919832B2

公开(公告)日：2021-02-16

申请号：US16461120

申请日：2016-11-25

Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Inventor： Zhanling Ma ,  Wenliang Zhu ,  Xiangang Ma ,  Hongchao Liu ,  Yong Liu ,  Youming Ni ,  Shiping Liu ,  Qiwei Chen ,  Zhongmin Liu

IPC: C07C51/353 ,  C07C67/333 ,  C07C67/343 ,  B01J29/24 ,  B01J29/46 ,  B01J29/68 ,  B01J29/76 ,  B01J29/85 ,  B01J29/70 ,  B01J29/83 ,  B01J29/18 ,  B01J29/80 ,  B01J29/06 ,  B01J29/08 ,  B01J29/65 ,  C07C69/52 ,  C07C69/54 ,  C07C69/533 ,  C07C57/03 ,  C07C57/04

Abstract: Provided is a method for preparing a lower unsaturated fatty acid ester, which comprises carrying out an aldol condensation reaction between dimethoxymethane (DMM) and a lower acid or ester with a molecular formula of R1—CH2—COO—R2 on an acidic molecular sieve catalyst in an inert atmosphere to obtain a lower unsaturated fatty acid or ester(CH2═C(R1)—COO—R2), wherein R1 and R2 are groups each independently selected from the group consisting of H— and C1-C4 saturated alkyl group.

公开(公告)号：US10532969B2

公开(公告)日：2020-01-14

申请号：US15763318

申请日：2015-12-11

Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Inventor： Lei Shi ,  Youming Ni ,  Wenliang Zhu ,  Yong Liu ,  Hongchao Liu ,  Zhongmin Liu

IPC: C07C41/14 ,  C07C29/128 ,  B01J29/08 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J29/78

Abstract: The present invention provides a method for directly preparing glycol dimethyl ether and co-producing ethylene glycol from ethylene glycol monomethyl ether. More specifically, the method comprises passing a feedstock containing a raw material of ethylene glycol monomethyl ether and a carrier gas through a reactor loaded with a solid acid catalyst to produce glycol dimethyl ether and ethylene glycol, at a reaction temperature range from 40° C. to 150° C. and a reaction pressure range from 0.1 MPa to 15.0 MPa; wherein a carrier gas is an optional inactive gas; and the feedstock contains water whose volume concentration in the feedstock is in a range from 0% to 95%; and the weight hourly space velocity of the raw material of ethylene glycol monomethyl ether is in a range from 0.05 h−1 to 5.0 h−1; and the volume concentration of the raw material of ethylene glycol monomethyl ether in the feedstock is in a range from 1% to 100%; and the volume concentration of the carrier gas in the feedstock is in a range from 0% to 99%. In the method of the present invention, using a solid acid as a catalyst and ethylene glycol monomethyl ether as a raw material, under a low temperature condition, glycol dimethyl ether and ethylene glycol are prepared directly with high selectivity; moreover, there is substantially or completely no production of by-product 1,4-dioxane that causes pollution to the environment and is harmful to the human body or animal bodies.

公开(公告)号：US10370318B2

公开(公告)日：2019-08-06

申请号：US15758572

申请日：2015-12-08

Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Inventor： Youming Ni ,  Wenliang Zhu ,  Lei Shi ,  Hongchao Liu ,  Yong Liu ,  Zhongmin Liu

IPC: C07C53/08 ,  C07C51/12 ,  B01J29/18 ,  B01J29/24 ,  B01J29/65 ,  B01J29/67 ,  B01J31/02 ,  B01J31/26 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08 ,  B01J37/30 ,  B01J29/00

Abstract: The present invention provides a method for preparing acetic acid by carbonylation of methanol, which comprises: passing a raw material containing methanol, carbon monoxide and water through a reaction region loaded with a catalyst containing an acidic molecular sieve with an adsorbed organic amine, and carrying out a reaction under the following conditions to prepare acetic acid. The method in the present invention offers high acetic acid selectivity and good catalyst stability. The catalyst in the present invention does not contain noble metals such as rhodium or iridium, and does not need additional agent containing iodine, and thus does not generate a strong corrosive hydroiodic acid and the like.

公开(公告)号：US10040739B2

公开(公告)日：2018-08-07

申请号：US15537928

申请日：2014-12-22

Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Inventor： Youming Ni ,  Wenliang Zhu ,  Hongchao Liu ,  Yong Liu ,  Zhongmin Liu ,  Lina Li ,  Shiping Liu ,  Hui Zhou

IPC: C07C41/14 ,  B01J29/65 ,  B01J29/40 ,  B01J29/18 ,  B01J29/70 ,  B01J29/08 ,  C07C43/10

Abstract: Disclosed is a method for preparing a double end capped glycol ether, the method comprising: introducing into a reactor a raw material comprising a glycol monoether and a monohydric alcohol ether, and enabling the raw material to contact and react with an acidic molecular sieve catalyst to generate a double end capped glycol ether, a reaction temperature being 50-300° C., a reaction pressure being 0.1-15 MPa, a WHSV of the glycol monoether in the raw material being 0.01-15.0 h−1 , and a mole ratio of the monohydric alcohol ether to the glycol monoether in the raw material being 1-100:1. The method of the present invention enables a long single-pass lifespan of the catalyst and repeated regeneration, has a high yield and selectivity of a target product, low energy consumption during separation of the product, a high economic value of a by-product, and is flexible in production scale and application.

公开(公告)号：US09944588B2

公开(公告)日：2018-04-17

申请号：US15526780

申请日：2014-11-17

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Youming Ni ,  Wenliang Zhu ,  Yong Liu ,  Hongchao Liu ,  Zhongmin Liu ,  Lina Li ,  Shiping Liu ,  Hui Zhou

IPC: C07C69/00 ,  C07C69/06 ,  C07C67/39 ,  B01D3/14 ,  B01J29/70 ,  B01J29/40 ,  C07C53/02 ,  C07C43/10 ,  C07C43/04 ,  C08F212/36 ,  C08F212/08

CPC classification number: C07C69/06 ,  B01D3/14 ,  B01J29/40 ,  B01J29/7038 ,  C07C41/56 ,  C07C43/043 ,  C07C43/10 ,  C07C53/02 ,  C07C67/39 ,  C08F212/08 ,  C08F212/36 ,  C07C43/30

Abstract: A method for preparing methyl formate in which a raw material containing formaldehyde, methanol and/or dimethyl ether is introduced into a first reaction zone to come into contact with a catalyst A, and a component I is obtained by separation, the component I is introduced into a second reaction zone to come into contact with a catalyst B so as to obtain, by separation, methyl formate as a product, dimethyl ether that is returned to the first reaction zone and a component II that is returned to the second reaction zone, the catalysts have a long service life, the reaction conditions are mild, and the utilization rate of the raw material is high, thus enabling a continuous production for large-scale industrial application.