Abstract: The present invention discloses a catalyst for preparing pyridine base from syngas. The catalyst includes a carrier, an active component, a first auxiliary and a second auxiliary. The carrier is molecular sieves. The active component is Rh. The first auxiliary is one or more of Mn, Fe, Na and La. The second auxiliary is one or more of Zn, Co, Cr, Bi and Cu. The active component Rh is 0.5-3% of a mass of the carrier. The first auxiliary is 0.05-5% of the mass of the carrier. The second auxiliary is 0.5-15% of the mass of the carrier. The present invention further discloses application of the catalyst to preparation of pyridine base by catalyzing syngas, where the syngas and an ammonia donor are used as reaction raw materials for reaction to generate pyridine base products.
Type:
Grant
Filed:
August 3, 2018
Date of Patent:
September 7, 2021
Assignee:
NANJING REDSUN BIOCHEMISTRY CO., LTD
Inventors:
Xiaopan Liu, Chaoran Luo, Yi Xue, Wenkui Wang, Xiang Du
Abstract: The present invention discloses a catalyst for preparing pyridine base from syngas. The catalyst includes a carrier, an active component, a first auxiliary and a second auxiliary. The carrier is molecular sieves. The active component is Rh. The first auxiliary is one or more of Mn, Fe, Na and La. The second auxiliary is one or more of Zn, Co, Cr, Bi and Cu. The active component Rh is 0.5-3% of a mass of the carrier. The first auxiliary is 0.05-5% of the mass of the carrier. The second auxiliary is 0.5-15% of the mass of the carrier. The present invention further discloses application of the catalyst to preparation of pyridine base by catalyzing syngas, where the syngas and an ammonia donor are used as reaction raw materials for reaction to generate pyridine base products.
Type:
Application
Filed:
August 3, 2018
Publication date:
June 3, 2021
Applicant:
NANJING REDSUN BIOCHEMISTRY CO., LTD.
Inventors:
Xiaopan Liu, Chaoran Luo, Yi Xue, Wenkui Wang, Xiang Du
Abstract: Disclosed is a method for preparing 2,2?-dipyridine and derivatives thereof. The method includes: using pyridine represented by formula I or a derivative thereof as a raw material to generate 2,2?-dipyridine represented by formula II by performing dehydrogenative coupling under the action of a supported catalyst in the presence of additives, where R is H, C1-C2 alkyl, Cl, or Br. The method of the present invention features wide adaptability to raw materials, high atomic utilization rate, high catalyst activity, long service life, and fewer by-products.
Type:
Grant
Filed:
April 4, 2018
Date of Patent:
May 25, 2021
Assignee:
NANJING REDSUN BIOCHEMISTRY CO., LTD.
Inventors:
Chaoran Luo, Wenkui Wang, Yi Xue, Xinchun Chen, Dianhai Zhou, Jianhua Jiang, Fujun Wang
Abstract: A method for preparing 1,1?-ethylene-2,2?-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1?-ethylene-2,2?-bipyridinium dichloride.
Type:
Grant
Filed:
October 13, 2017
Date of Patent:
December 8, 2020
Assignee:
NANJING REDSUN BIOCHEMISTRY CO., LTD.
Inventors:
Ruikuan Yue, Yi Xue, Honglong Chen, Wenkui Wang, Chaoran Luo, Xinchun Chen, Dianhai Zhou, Jianhua Jiang, Fujun Wang
Abstract: Disclosed is a method for preparing 2,2?-dipyridine and derivatives thereof. The method includes: using pyridine represented by formula I or a derivative thereof as a raw material to generate 2,2?-dipyridine represented by formula II by performing dehydrogenative coupling under the action of a supported catalyst in the presence of additives, where R is H, C1-C2 alkyl, Cl, or Br. The method of the present invention features wide adaptability to raw materials, high atomic utilization rate, high catalyst activity, long service life, and fewer by-products.
Type:
Application
Filed:
April 4, 2018
Publication date:
October 22, 2020
Applicant:
NANJING REDSUN BIOCHEMISTRY CO., LTD.
Inventors:
Chaoran LUO, Wenkui WANG, Yi XUE, Xinchun CHEN, Dianhai ZHOU, Jianhua JIANG, Fujun WANG
Abstract: A method for preparing 1,1?-ethylene-2,2?-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1?-ethylene-2,2?-bipyridinium dichloride.
Type:
Application
Filed:
October 13, 2017
Publication date:
October 1, 2020
Applicant:
NANJING REDSUN BIOCHEMISTRY CO., LTD.
Inventors:
Ruikuan YUE, Yi XUE, Honglong CHEN, Wenkui WANG, Chaoran LUO, Xinchun CHEN, Dianhai ZHOU, Jianhua JIANG, Fujun WANG