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Patent Agency Ranking
公开(公告)号：US11292761B2
公开(公告)日：2022-04-05
申请号：US16647174
申请日：2017-09-29
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.
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公开(公告)号：US10919832B2
公开(公告)日：2021-02-16
申请号：US16461120
申请日：2016-11-25
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.
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公开(公告)号：US10040739B2
公开(公告)日：2018-08-07
申请号：US15537928
申请日：2014-12-22
Inventor： Youming Ni , Wenliang Zhu , Hongchao Liu , Yong Liu , Zhongmin Liu , Lina Li , Shiping Liu , Hui Zhou
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.
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公开(公告)号：US09944588B2
公开(公告)日：2018-04-17
申请号：US15526780
申请日：2014-11-17
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.
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公开(公告)号：US09938227B2
公开(公告)日：2018-04-10
申请号：US15526868
申请日：2014-11-17
Inventor： Youming Ni , Wenliang Zhu , Yong Liu , Hongchao Liu , Zhongmin Liu , Lina Li , Shiping Liu , Hui Zhou
IPC: C07C69/00 , C07C67/39 , C07C67/00 , C07C69/06 , C07C41/50 , C07C43/04 , C07C43/30 , B01J39/05 , B01J29/08 , B01J29/18 , B01J29/40 , B01J29/65 , B01J29/70 , B01J31/10 , B01J39/20 , C07C41/18
CPC classification number: C07C67/39 , B01J29/084 , B01J29/18 , B01J29/40 , B01J29/65 , B01J29/7007 , B01J29/7038 , B01J31/10 , B01J39/05 , B01J39/20 , B01J2231/50 , B01J2231/70 , C07C41/18 , C07C41/50 , C07C43/04 , C07C43/30 , C07C67/00 , C07C69/06
Abstract: Method for preparing methyl formate and coproducing dimethyl ether by reacting a formaldehyde and methanol raw material (molar ratio range of 1:4 to 1:0.05) in a First Reaction Region at ranges from 50° C. to 100° C. with Catalyst A resulting in post-reaction material separated into Constituent I. Reacting Constituent I in a Second Reaction Region at ranges from 50° C. to 200° C. and from 0.1 MPa to 10 MPa with Catalyst B resulting in post-reaction material, which is separated into methyl formate, dimethyl ether and Constituent II. At least 1% of dimethyl ether is product, and recycling the rest to the First Reaction Region. Constituent II is recycled to the Second Reaction Region. Each component is gaseous phase and/or liquid phase, independently. The method shows long catalyst life, mild reaction condition, high utilization ratio of raw materials, continuous production and large scale industrial application potential.
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