公开(公告)号：US20190256440A1

公开(公告)日：2019-08-22

申请号：US16344375

申请日：2017-08-22

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

Inventor： Youming NI ,  Wenliang ZHU ,  Zhongmin LIU ,  Zhiyang CHEN ,  Yong LIU ,  Hongchao LIU ,  Xiangang MA ,  Shiping LIU

IPC: C07C1/22 ,  B01J29/40

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.

公开(公告)号：US20180273455A1

公开(公告)日：2018-09-27

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: C07C41/01 ,  C07C29/10

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：US20170320808A1

公开(公告)日：2017-11-09

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

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.

公开(公告)号：US20150298108A1

公开(公告)日：2015-10-22

申请号：US14650589

申请日：2014-01-28

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: B01J31/02 ,  B01J29/18 ,  C07C67/37

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。