79-21-0Relevant academic research and scientific papers
Improvement of a process for preparing peracetic acid by the reaction of acetic acid with hydrogen peroxide in aqueous solutions, catalyzed by ion-exchange resins
Voronov,Sapunov,Makarov,Kulazhskaya,Kaleeva
, p. 421 - 431 (2016)
The effect of Amberlyst 15Dry cation-exchange resin on the reaction of peracetic acid formation from acetic acid and hydrogen peroxide in aqueous solution was studied. The pathways of available oxygen consumption were determined. The noncatalytic synthesis is accompanied by spontaneous decomposition of the peracid formed, which sharply decelerates on introducing Amberlyst 15Dry catalyst into the reaction mixture. Comparison of the kinetic relationships of the processes occurring in batch and flow-through reactors shows that in the latter case the process is characterized by diffusion hindrance. A kinetic model of the process with the parameters ensuring adequate mathematical description of the data obtained was suggested.
MgO/SnO2/WO3 as catalysts for synthesis of ε-caprolactone over oxidation of cyclohexanone with peracetic acid
Zhang, Guangxu,Ren, Xiaocong,Zhang, Hongbo,Peng, Yu,Gui, Shaoyong
, p. 59 - 63 (2014)
Different Mg/Sn/W mixed oxides prepared by precipitation were used as catalysts in the Baeyer-Villiger oxidation of cyclohexanone with a mixture of 50% hydrogen peroxide and acetic acid as oxidant. The Mg/Sn/W oxide obtained by precipitation from NH3·H2O was found to be the catalyst providing the highest yield of ε-caprolactone and initial catalytic activity among all samples.
Synthesis of chromium(III) complex with 1-hydroxy-2-pyridinone-6-carboxylic acid as insulin-mimetic agent and its spectroscopic and computational studies
Yasarawan, Nuttawisit,Thipyapong, Khajadpai,Sirichai, Somsak,Ruangpornvisuti, Vithaya
, p. 144 - 151 (2013)
The new complex of chromium(III) and 1-hydroxy-2-pyridinone-6-carboxylic acid was synthesized and its preparation routes were reported. Mass spectrometry and elemental analysis indicated the formation of chromium complex with the metal-to-ligand mole ratio of 1:3. Combination of spectroscopic measurement and spectral computations based on the density functional theory suggested that 1-hydroxy-2-pyridinone-6-carboxylic acid was a bidentate ligand using one oxygen atom at pyridinone carbonyl group and the other at N-oxide group as donor atoms upon chelation with chromium(III), forming the six-coordinate complex with five-membered chelate rings. Due to the enhanced stability of the chelate rings, such the pathway of chelation was theoretically predicted to be more favorable than the case where the carboxylate oxygen atom of ligand participated in the chelation. According to the preliminary tests, the chromium(III) complex with 1-hydroxy-2-pyridinone-6-carboxylic acid was found to be active in lowering plasma glucose levels in vivo.
Expanding the scope of gallium-catalyzed olefin epoxidation
Bronston, Fraser,Ting, Sharon,Zhang, Qiao,Goldsmith, Christian R.
, p. 268 - 272 (2016)
The broader use of Ga(III) complexes in the catalysis of olefin epoxidation was explored with a variety of studies. Two Ga(III) complexes with N-donor ligands were found to catalyze olefin epoxidation by peracetic acid in water. The stability of the catalyst more strongly influences the observed reactivity in water than in acetonitrile. Analysis of olefin epoxidation in buffered aqueous solutions indicates that either acidic or basic conditions are necessary for catalysis. The functional group tolerance was assessed using a variety of organic substrates. Alcohols, ketones, and alkylhalides survive the reaction conditions. Other common terminal oxidants were tested as possible replacements for peracetic acid but were not found to benefit from the presence of a Ga(III)-containing catalyst.
Safety advantages of on-site microprocesses
Ebrahimi, Fatemeh,Kolehmainen, Eero,Turunen, Ilkka
, p. 965 - 969 (2009)
Usually large-scale capacities are preferred in process industry because of the economics of scale. However, small capacities bring along several other advantages, which are emphasized especially in on-site production. By producing on-site, the transportation of dangerous chemicals can be avoided. Moreover, smaller on-site production processes also mean a step towards inherently safer technology. Microreactors represent a technology that efficiently utilizes safety advantages resulting from small scale. These safety advantages of microreactors in on-site production are studied in this contribution. Production of peracetic acid is used as a test case. This unstable and explosive chemical is used, e.g. in treatment of municipal wastewater and pulp bleaching. This study is based on comparison of a conventional batch process with the capacity of 170 kg/h and an on-site continuous microprocess producing 10 kg/h peracetic acid. Preliminary design of these processes was carried out. Four different methods were used to analyze the safety of the processes. It was found that the conventional methods for analysis of process safety might not be reliable and adequate for radically novel technology, such as microprocesses. This is understandable because the methods are partly based on experience, which is very limited in the connection of totally novel technology. 2009 American Chemical Society.
Efficient production of peracetic acid in aqueous solution with cephalosporin-deacetylating acetyl xylan esterase from Bacillus subtilis
Tao, Weiyi,Xu, Qing,Huang, He,Li, Shuang
, p. 2121 - 2127 (2015)
Peracetic acid (PAA) is widely used in sterilization, bleaching textile industry, environmental engineering, chemical synthesis, and biomimetic chemistry. A previous study reported that acetyl xylan esterase (AXE) of Bacillus subtilis CICC 20034 has high activity toward cephalosporin C and 7-aminocephalosporanic acid. In this study, we found that AXE also exhibited high perhydrolysis activity toward acetate esters and endowed itself with great industrial interest on enzyme-catalyzed preparation of PAA. Recombinant AXE of B. subtilis CICC 20034 could be efficiently produced in a low-cost autoinduction medium with an activity of 6.8 × 103 U/mL. The reaction conditions for the optimal synthesis of PAA were as follows: 0.30 mg/mL AXE crude enzyme, 300 mM glycerol triacetate, and 1 M hydrogen peroxide, pH 8.0, and 20 °C, which produced approximately 150 mM of PAA within 5 min. The AXE was then immobilized on an acrylate amino resin; the activity of the immobilized AXE was 383.7 U/g. In the presence of 1 g/mL of immobilized AXE resin, PAA titer of the initial reaction batch was approximately 142.5 mM, and about 95.5 mM of PAA could be produced after 10 cycles.
A new method for the preparation of peroxyacetic acid using solid superacid catalysts
Saha, Madhu Sudan,Nishiki, Yoshinori,Furuta, Tsuneto,Denggerile, Ao,Ohsaka, Takeo
, p. 5535 - 5537 (2003)
A new method for the preparation of peroxyacetic acid from acetic acid and hydrogen peroxide in the presence of solid superacids as a catalyst under mild conditions has been proposed. The preparation of peroxyacetic acid could be carried out in a batchwise operation as well as in a flow-system operation. Nafion-H was found to be active and very stable catalyst for the preparation of peroxyacetic acid and to be regenerated without the loss of catalytic activity.
Peracetic acid aqueous solution and method for producing the same
-
Paragraph 0042-0058, (2021/05/18)
A peracetic acid aqueous solution and a manufacturing method thereof are provided to be used in various fields including sterilizing washing agents for various medical devices, sterilizing washing agents for food production processes, disinfectants in papermaking processes, semiconductor etching agents, and the like. The peracetic acid solution of claim 1, wherein the peracetic acid solution has 25 weight percent of peracetic acid. The acetic acid of 0.5 ? 15 weight % acetic acid. Hydrogen peroxide 1 through 30 weight percent hydrogen peroxide. An organic acid comprising 1 and 15 weight % of organic acid. The chelating agent 1 according to 5 weight %. , And the remaining water. The chelating agent is selected from the group consisting of [[ [2,1- ethynyl nitrobis (methylene) tetrakis phosphonic acid, [bis amino] methyl phosphonic acid, 2 -phosphonobutane -1 , 2, 4- tricyclic acid, 2 -hydroxy phosphonoacetic acid and mixtures thereof.
Application of Continuous Flow in Tazobactam Synthesis
Sun, Tiemin,Wang, Jiasheng,Wu, Chengjun,Xin, Yunting,Zhou, Shuhao
, p. 1648 - 1657 (2021/07/19)
Tazobactam is a β-lactamase inhibitor. In this work, a combination of continuous flow and batch experiments for the synthesis of tazobactam has been developed. The first three steps and the preparation of the peroxyacetic acid are continuously carried out in the microreactors, which improves the procedure safety and efficiency. There is also a final step of the deprotection reaction in the microreactor, which can increase the yield and reduce the formation of impurities. Under optimized process conditions, the total yield of the target product reached 37.09% (30.93% in batch). The continuous flow method not only greatly reduces the reaction time but also significantly improves procedure safety and increases the yield.
Preparation method of 4,5-epoxytetrahydrophthalate glycidyl ester
-
Paragraph 0037-0052, (2022/01/10)
The present invention provides a method for preparing 4,5-epoxytetrahydrophthalate glycidyl ester. The present invention by taking acetic anhydride as raw material, adding 62.5% ~ 64.7% of hydrogen peroxide and a certain amount of acidic catalyst oxidation to generate peracetic acid, and then the tetrahydrophthalic acid glycidyl ester and the reaction of peracetic acid to obtain epoxy reaction, and then through a series of post-treatments to give 4,5-epoxytetrahydrophthalic acid glycidyl ester. The preparation method of the present invention is compared with the traditional process, which greatly reduces the concentration of hydrogen peroxide, thereby solving the problem that high concentration of hydrogen peroxide in the traditional process is easy to explode during storage, transportation and use, and also reduces the cost of raw materials. Compared with the prior art, the epoxy value of 4,5-epoxytetrahydrothphthalate glycidyl ester products prepared by the present invention is also higher.
This product is a nationally controlled contraband or patented product, and the Lookchem platform doesn't provide relevant sales information.
