420-12-2Relevant articles and documents
Kinetic Studies of Cascade Reactions in High-Throughput Systems
Iron, David,Boelens, Hans F. M.,Westerhuis, Johan A.,Rothenberg, Gadi
, p. 6701 - 6707 (2003)
The application of robotic systems to the study of complex reaction kinetics is considered, using the cascade reaction A → B → C as a working example. Practical problems in calculating the rate constants k 1 and k2 for the reactions A → B and B → C from concentration measurements of CA, CB, or CC are discussed in the light of the symmetry and invertability of the rate equations. A D-optimal analysis is used to determine the points in time and the species that will give the best (i.e., most accurate) results. When exact data are used, the most robust solution results from measuring the pair of concentrations (CA, CC). The system's information function is computed using numeric methods. This function is then used to estimate the amount of information obtainable from a given cascade reaction at any given time. The theoretical findings are compared with experimental results from a set of two-stage cascade experiments monitored using UV-visible spectroscopy. Finally, the pros and cons of using a single reaction sample to estimate both k1 and k2 are discussed.
-
Reynolds
, p. 4951 (1957)
-
-
Sakai et al.
, p. 103,110 (1974)
-
Preparation method of aliphatic mercaptan
-
Paragraph 0030-0031; 0035-0036; 0039-0040; 0042-0043; ..., (2021/08/28)
The invention provides a novel method for preparing (CH3CH2) 2NCH2CH2SH, i.e., the reaction is carried out at a lower temperature, and the reaction is controllable by adopting a manner of dropwise adding materials, so that the safe production is realized.
Taurine synthesis method (by machine translation)
-
Paragraph 0036-0037; 0041-0042; 0045-0046; 0049-0050, (2020/07/15)
The invention provides a taurine synthesis method, and solves the problems of by-product accumulation, high temperature and high pressure in ammonia decomposition reaction, strong strong acid and strong base in acidification and the like in an addition reaction in a traditional taurine synthesis process. The method comprises the following steps: 1) carrying out cyclization reaction of sulfur solution and ethylene contact to obtain a solution of sulfur dissolved in carbon disulfide; 2) carrying out an addition reaction with ammonia or liquid ammonia contact to obtain an amino thiol; 3) carrying out an oxidation reaction in the presence of a catalyst to obtain the crude taurine. (by machine translation)
