Patents by Inventor Youming NI

Youming NI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190262811
    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.
    Type: Application
    Filed: August 22, 2017
    Publication date: August 29, 2019
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Zhongmin LIU, Zhiyang CHEN, Yong LIU, Hongchao LIU, Xiangang MA, Shiping LIU
  • Publication number: 20190256440
    Abstract: Disclosed is a method for preparing aromatic hydrocarbons, particularly relates to the preparation of the aromatic hydrocarbons by passing methanol and carbon monoxide through a reactor loaded with an acidic ZSM-5 molecular sieve catalyst containing no metal additive under reaction conditions. Compared with the prior art, the method provided by the present invention can improve and stabilize the selectivity to aromatic hydrocarbons, particularly BTX, by adding carbon monoxide in methanol aromatization, and also prolongs the single-pass life of the catalyst. The performance of an inactivated catalyst is not significantly degraded after repeated regenerations. Furthermore, the catalyst preparation process omits the step of adding a metal additive, so that not only the process is simplified, but also costs are greatly reduced, and environmental protection is facilitated.
    Type: Application
    Filed: August 22, 2017
    Publication date: August 22, 2019
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Zhongmin LIU, Zhiyang CHEN, Yong LIU, Hongchao LIU, Xiangang MA, Shiping LIU
  • Patent number: 10370318
    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.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 6, 2019
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming Ni, Wenliang Zhu, Lei Shi, Hongchao Liu, Yong Liu, Zhongmin Liu
  • Patent number: 10315973
    Abstract: This invention provides a method for preparing ethylene glycol by hydrolyzing ethylene glycol monomethyl ether.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 11, 2019
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming Ni, Wenliang Zhu, Yong Liu, Hongchao Liu, Lei Shi, Zhongmin Liu
  • Patent number: 10287233
    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.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 14, 2019
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Hongchao Liu, Wenliang Zhu, Yong Liu, Youming Ni, Zhongmin Liu, Linying Wang, Peng Tian
  • Publication number: 20180370896
    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.
    Type: Application
    Filed: December 8, 2015
    Publication date: December 27, 2018
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Hongchao LIU, Wenliang ZHU, Yong LIU, Youming NI, Zhongmin LIU, Linying WANG, Peng TIAN
  • Patent number: 10087135
    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.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 2, 2018
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Hongchao Liu, Wenliang Zhu, Youming Ni, Yong Liu, Zhongmin Liu, Linying Wang, Peng Tian
  • Publication number: 20180273455
    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.
    Type: Application
    Filed: December 11, 2015
    Publication date: September 27, 2018
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Lei SHI, Youming NI, Wenliang ZHU, Yong LIU, Hongchao LIU, Zhongmin LIU
  • Publication number: 20180244599
    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.
    Type: Application
    Filed: December 8, 2015
    Publication date: August 30, 2018
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Science
    Inventors: Youming NI, Wenliang ZHU, Lei SHI, Hongchao LIU, Yong LIU, Zhongmin LIU
  • Patent number: 10059649
    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.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: August 28, 2018
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Yong Liu, Wenliang Zhu, Hongchao Liu, Youming Ni, Zhongmin Liu, Shuanghe Meng, Lina Li, Shiping Liu, Hui Zhou
  • Patent number: 10040739
    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.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 7, 2018
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming Ni, Wenliang Zhu, Hongchao Liu, Yong Liu, Zhongmin Liu, Lina Li, Shiping Liu, Hui Zhou
  • Publication number: 20180201567
    Abstract: The present application provides a method for preparing acetal carbonyl compound used as a mediate 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.
    Type: Application
    Filed: December 8, 2015
    Publication date: July 19, 2018
    Applicant: Dallian Institute of Chemical Phisics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Yong LIU, Hongchao LIU, Zhongmin LIU, MIao YANG, Peng TIAN
  • Publication number: 20180201557
    Abstract: This invention provides a method for preparing ethylene glycol by hydrolysing ethylene glycol monomethyl ether.
    Type: Application
    Filed: December 8, 2015
    Publication date: July 19, 2018
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Yong LIU, Hongchao LIU, Lei SHI, Zhongmin LIU
  • Publication number: 20180201568
    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.
    Type: Application
    Filed: December 8, 2015
    Publication date: July 19, 2018
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Hongchao LIU, Wenliang ZHU, Youming NI, Yong LIU, Zhongmin LIU, Linying WANG, Peng TIAN
  • Patent number: 9944588
    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.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: April 17, 2018
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Youming Ni, Wenliang Zhu, Yong Liu, Hongchao Liu, Zhongmin Liu, Lina Li, Shiping Liu, Hui Zhou
  • Patent number: 9938227
    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.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: April 10, 2018
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Youming Ni, Wenliang Zhu, Yong Liu, Hongchao Liu, Zhongmin Liu, Lina Li, Shiping Liu, Hui Zhou
  • Publication number: 20170334818
    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.
    Type: Application
    Filed: December 22, 2014
    Publication date: November 23, 2017
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Hongchao LIU, Yong LIU, Zhongmin LIU, Lina LI, Shiping LIU, Hui Zhou
  • Publication number: 20170320807
    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.
    Type: Application
    Filed: November 17, 2014
    Publication date: November 9, 2017
    Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Youming NI, Wenliang ZHU, Yong LIU, Hongchao LIU, Zhongmin LIU, Lina LI, Shiping LIU, Hui ZHOU
  • Publication number: 20170320808
    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.
    Type: Application
    Filed: November 17, 2014
    Publication date: November 9, 2017
    Applicant: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Youming NI, Wenliang ZHU, Yong LIU, Hongchao LIU, Zhongmin LIU, Lina LI, Shiping LIU, Hui ZHOU
  • Patent number: 9708240
    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.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: July 18, 2017
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Youming Ni, Wenliang Zhu, Hongchao Liu, Yong Liu, Zhongmin Liu, Shuanghe Meng, Lina Li, Shiping Liu, Hui Zhou