By Victor H. Agreda
Amazing a stability among easy chemistry and chemical engineering, this updated reference discusses vital facets of acetic acid and its significant derivatives, together with chemistry, equipment of education and manufacture, and synthesis, in addition to present and rising downstream technologies.;The publication presents finished actual estate information for compounds and their separation, together with acetic acid-water separation. Describing 5 different types of options for the manufacture of acetic acid, it: examines thermophysical homes and aqueous suggestions, with specified reasons of mathematical types and correlations; offers a severe research of estate; outlines production expenses and comparable monetary components; stories the purposes of acetic acid and derivatives; covers the chemistry and guidance of the derivatives; elucidates fresh themes resembling deicers, esters and new esterification applied sciences.
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Additional resources for Acetic Acid and its Derivatives (Chemical Industries)
9%. Acetone is the major < previous page page_17 next page > page_18 < previous page page_18 next page > Page 18 by-product generally recovered; unrecovered by-products are acetic acid, diacetyl, and crotonaldehyde. An alternate process that involves vacuum distillation of the acetaldehyde with no acetylene recycle affords acetaldehyde in 98% yield . Other catalysts in lieu of mercury, most notably ZnCl2 (1225%) or CuCl in concentrated aqueous ZnCl2, afford acetaldehyde in yields of 8590%. , oxides and phosphate salts of Zn, Cd, Hg, Cu, Fe, Co) have been investigated extensively .
The reason for this may well be that the alkali metal iodides alone were poor agents for the regeneration of methyl iodide from methanol. Figure 2 Structure of [Rh(Ac)CO2I2]22. < previous page page_37 next page > page_38 < previous page page_38 next page > Page 38 Figure 3 Conceptual flowsheet for the carbonylation of methanol to acetic acid. < previous page page_38 next page > page_39 < previous page page_39 next page > Page 39 However, a group of investigators from Celanese, possibly acting on reports of enhanced carbonylation activity when these salts are used in combination with methyl iodide in the carbonylation of methyl acetate to acetic anhydride , described a process improvement involving the addition of lithium iodide [23,24].
13. German Patent 1,188,072 to Stamicarbon (Oct. 28, 1965). 14. Japanese Patent 40-8523 to Stamicarbon (May 4, 1965). 15. Japanese Patent 40-10569 to Stamicarbon (May 28, 1965). < previous page page_32 next page > page_33 < previous page page_33 next page > Page 33 16. British Patent 1,016,101 to Ruhrchemie (Jan. 5, 1966). 17. German Patent 1,216,864 to Ruhrchemie (May 18, 1966). 18. Nieto, J. M. , and Fierro, J. L. , Appl. , 61, 235251 (1990). 19. Nieto, J. M. , and Fierro, J. L. , New Developments in Selective Oxidation, Elsevier, Amsterdam, 1990, pp.
Acetic Acid and its Derivatives (Chemical Industries) by Victor H. Agreda