10424-38-1Relevant articles and documents
Polymethacrylic zinc porphyrin: A new approach to chiral recognition
Angiolini, Luigi,Benelli, Tiziana,Giorgini, Loris
, p. 204 - 209 (2011)
A methacrylic homopolymer bearing in the side-chain achiral zinc tetraarylporphyrin moieties, has been studied as macromolecular chromophoric host to determine the absolute configuration of α,ω-diamines. The polymeric material resulted able to bind the ch
Selective amination of 1,2-propanediol over Co/La3O4 catalyst prepared by liquid-phase reduction
Yue, Chuan-Jun,Di, Kai,Gu, Li-Ping,Zhang, Zhen-Wei,Ding, Lin-Lin
, (2019)
The catalytic coupling of alcohol and ammonia is an environmentally friendly process. Cobalt-based catalysts, modified by supports (including CeO2, Fe3O4, Nb2O5, La3O4 and Al2O3), and prepared by the liquid-phase reduction, were used for the amination of 1,2-propanediol. The screened nano-Co/La3O4 catalyst exhibited an excellent catalytic performance of 68% conversion and 89% selectivity toward 2-amino-1-propanol under optimal conditions. The characterizations of the catalyst was performed by XRD, XPS, BET, TEM, TG, and CO2-TPD, revealing a relatively large specific surface area, strongly alkaline sites and a Co-La-O transition phase, which were responsible for the selective catalysis of 1,2-propanediol. The efficient construction of cobalt-based catalysts on the basis of the active species is key to improving the efficiency of the reaction process.
A phase transfer catalysis process for preparing 1, 2 - propylene diamine method
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Paragraph 0017; 0030; 0031, (2017/08/25)
The invention introduces preparation of 1,2-propane diamine, and mainly emphasizes an application of a phase-transfer catalyst to reactions. A major reaction process comprises the following steps: (1) adding propylene dichloride, ammonia water, a catalyst and the phase-transfer catalyst into a reaction kettle; (2) putting the reaction kettle into which raw materials are added into a homogeneous phase reactor; (3) reacting at 140-170 DEG C and 25 Hz, evaporating unreacted ammonia gas under the normal pressure after the reaction is finished, and distilling to obtain an aqueous solution of propane diamine. The method disclosed by the invention has the advantages that the propylene dichloride being a byproduct produced in the production of epoxy chloropropane is taken as a raw material, i.e.,, waste is utilized, and thus the production cost is reduced; the phase-transfer catalyst is added in a reaction process, so that the reaction yield is greatly increased; meanwhile, the method is simple, is easy to operate, and is easy for realizing industrial production.