caa a22 4500 445850477 CHVBK 20180317145412.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1134/S0040579510051264 doi (NATIONALLICENCE)springer-10.1134/S0040579510051264 A new technology for the production of isoprene from isobutene-containing C4 fractions and formaldehyde: Prospects for industrial reconstruction [Elektronische Daten] [O. Pavlov, S. Karsakov, S. Pavlov] The industrially implemented process of isoprene production from isobutene-containing C4 fractions and formaldehyde, which includes the gas-phase high-temperature decomposition of an intermediate, 4,4-dimethyl-1,3-dioxane, is expensive and obsolete. We propose a new technology that requires the same precursors and allows for a reduction in the cost of isoprene by a factor of at least 1.5. It features the concurrent liquid-phase decomposition of intermediate products in a column reactor in the presence of an aqueous solution of phosphoric acid at a moderate temperature (∼160°C), and is convenient for reconstructing existing production lines. Pleiades Publishing, Ltd., 2011 isoprene nationallicence isobutene-containing fraction nationallicence formaldehyde nationallicence technology nationallicence reconstruction nationallicence Pavlov O. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut Karsakov S. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut Pavlov S. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/4(2011-08-01), 487-491 0040-5795 45:4<487 2011 45 11236 https://doi.org/10.1134/S0040579510051264 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040579510051264 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pavlov O. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut NATIONALLICENCE 700 1- Karsakov S. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut NATIONALLICENCE 700 1- Pavlov S. Yaroslavl Research Center of Chemical Technology, Yaroslavl, Russia aut NATIONALLICENCE 773 0- Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/4(2011-08-01), 487-491 0040-5795 45:4<487 2011 45 11236 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer