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Process, continuous compds

Now chemists at the Central Research Laboratories of Produits Chimiques Ugine Kuhlmann (PCUK) at Lyons, France, developed beginning in 1970, under the direction of Dr F. Weiss, a novel continuous process for manufg hydrazine. The process is based on the discovery that ammonia, hydrogen peroxide, and a carbonyl compd, such as methyl ethyl ketone, react in presence of an amide and catalytic quantities of a phosphate to form an azine intermediate. This intermediate hydrolyzes quantitatively to hydrazine and to carbonyl compd which is recycled. The yield is claimed to be better than 75%... [Pg.191]

Kinetics in a Continuously Stirred Photochemical Tank Reactor. Gregoire, F. Lavabre, D. Micheau, 1. C. Gimenez, M. Laplante, J.P. (Lab. Interact. Mol. React. Chim. Photochim., Univ. Paul Sabatier, F-31062 Toulouse, Fr.). J. Photochem. 1985, 28 (2), 261-71 (Eng.). The continuously stirred photochem. tank reactor (REPAC) is a new semiautomatic app. for photochem. measurements. From the kinetic anal, of steady-state regimes, this open system allows detn. of the quantum yields, the thermal-return rate consts. and the spectra of photoproducts. Moreover, the kinetic anal, of transient regimes affords further information on the mechanism of the photochem. process. The possibUities of the REPAC are shown using various photochromic compds. Theor. anal, of the kinetic rate equations in the REPAC shows that quite unusual behavior, such as unstable steady states or photochem. oscillations, can be exhibited. Nonhnear photochem. reaction schemes are likely to show such behavior. [Pg.44]


See other pages where Process, continuous compds is mentioned: [Pg.224]    [Pg.164]    [Pg.729]    [Pg.138]    [Pg.343]    [Pg.441]    [Pg.783]    [Pg.343]    [Pg.440]    [Pg.164]    [Pg.343]    [Pg.225]    [Pg.343]    [Pg.441]    [Pg.138]    [Pg.154]    [Pg.164]    [Pg.729]    [Pg.343]    [Pg.784]   
See also in sourсe #XX -- [ Pg.18 , Pg.31 ]




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