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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Making polycarbonates without employing phosgene: An overview on catalytic chemistry of intermediate and precursor syntheses for polycarbonate

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dc.contributor.author Kim, Won Bae ko
dc.contributor.author Joshi, Upendra A. ko
dc.contributor.author Lee, Jae Sung ko
dc.date.available 2015-07-30T00:50:09Z -
dc.date.created 2015-07-29 ko
dc.date.issued 2004-04 -
dc.identifier.citation INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.43, no.9, pp.1897 - 1914 ko
dc.identifier.issn 0888-5885 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/13112 -
dc.identifier.uri http://pubs.acs.org/doi/abs/10.1021/ie034004z ko
dc.description.abstract Conventional production of aromatic polycarbonates (PCs) involves interfacial polycondensation between phosgene (COCl2) and bisphenol A (BPA). This COCl2 process has several drawbacks such as environmental and safety problems involved in using the highly toxic COCl2 as the reagent, which resulted in the formation of chlorine salts of a stoichiometric amount, and in using copious amounts of methylene chloride as the solvent. For these reasons, environmentally friendly processes for PC production without COCl2 have been developed such as melt transesterification of BPA and diphenyl carbonate (DPC). However, COCl2-free production of DPC is not easy yet because of its severe equilibrium constraint, and therefore obtaining DPC efficiently is the most important step to develop a successful COCl2-free PC process. DPC can be obtained via two methods without using COCl2: two-step synthesis of DPC from dimethyl carbonate (DMC) and phenol and direct oxidative carbonylation of phenol. The DPC reacts with BPA to form PC precursors, which are amenable to the subsequent polycondensation step to obtain high molecular weight PC. Alternatively, BPA can be directly carbonylated with DMC or CO. In this work, we review and discuss different reaction routes and the involved catalytic chemistry of possible COCl2-free PC syntheses based on literature as well as our own experimental results. We compare reaction characteristics and the nature of PC precursors produced from different synthetic routes and provide a perspective on an improved COCl2-free PC process ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject BISPHENOL-A POLYCARBONATE ko
dc.subject CARBONATE INTERCHANGE REACTION ko
dc.subject COUPLED OXIDATIVE CARBONYLATION ko
dc.subject GAS-PHASE TRANSESTERIFICATION ko
dc.subject SOLID-STATE POLYMERIZATION ko
dc.subject PD DINUCLEAR COMPLEX ko
dc.subject SI BINARY OXIDES ko
dc.subject DIPHENYL CARBONATE ko
dc.subject DIMETHYL CARBONATE ko
dc.subject MELT POLYMERIZATION ko
dc.title Making polycarbonates without employing phosgene: An overview on catalytic chemistry of intermediate and precursor syntheses for polycarbonate ko
dc.title.alternative Making polycarbonates without employing phosgene: An overview on catalytic chemistry of intermediate and precursor syntheses for polycarbonate ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-1942452748 ko
dc.identifier.wosid 000220990100001 ko
dc.type.rims ART ko
dc.description.wostc 65 *
dc.description.scopustc 70 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1021/ie034004z ko
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