Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 서영웅 | - |
dc.date.accessioned | 2019-12-08T12:18:04Z | - |
dc.date.available | 2019-12-08T12:18:04Z | - |
dc.date.issued | 2018-06 | - |
dc.identifier.citation | RESEARCH ON CHEMICAL INTERMEDIATES, v. 44, no. 6, page. 3787-3796 | en_US |
dc.identifier.issn | 0922-6168 | - |
dc.identifier.issn | 1568-5675 | - |
dc.identifier.uri | https://link.springer.com/article/10.1007%2Fs11164-018-3382-4 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/119204 | - |
dc.description.abstract | To decompose dimethylhexane-1,6-dicarbamate (HDC) to hexamethylene diisocyanate (HDI), mixed CuO and ZnO catalysts with Cu/(Cu + Zn) ratio of 4 and 8% were prepared by coprecipitation (CP), sequential precipitation (SP) and incipient wetness impregnation (IW). The SP-derived CuO/ZnO catalysts showed higher HDC yields than those derived by CP and IW. The IW method produced CuO/ZnO catalysts consisting of larger CuO and ZnO particles compared to the two precipitation methods. The CP method led to substitution of Zn2+ by Cu2+ in the hydrozincite precursor phase, resulting in higher BET and Cu surface areas of CuO-ZnO catalysts due to intimate intergrowth of nano-sized particles. However, the inherent character of ZnO in the CP-derived catalysts was modified by interfacial contact between CuO and ZnO identified by UV-visible and Raman spectra. In contrast, the properties of CuO and ZnO, as well as the relatively large surface areas, were kept in the SP-derived catalysts owing to deposition of Cu precipitates to fully aged Zn precipitates. This is believed to be a benefit of the SP method for the reaction. Therefore, our preparation approach has great potential to be extended to various mixed oxide catalysts. | en_US |
dc.description.sponsorship | This research was financially supported by the Fusion Research Program for Green Technologies (NRF-2012M3C1A1054501), C1 Gas Refinery Program (NRF-2018M3D3A1A01018010) and Basic Science Research Program (NRF-2016R1A6A1A03013422) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning and by the Ministry of Education. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | SPRINGER | en_US |
dc.subject | CuO/ZnO | en_US |
dc.subject | Sequential precipitation | en_US |
dc.subject | Coprecipitation | en_US |
dc.title | Enhanced activity of CuO/ZnO catalyst on the decomposition of dimethylhexane-1,6-dicarbamate into dimethylhexane-1,6-diisocyanate | en_US |
dc.type | Article | en_US |
dc.relation.no | 6 | - |
dc.relation.volume | 44 | - |
dc.identifier.doi | 10.1007/s11164-018-3382-4 | - |
dc.relation.page | 3787-3796 | - |
dc.relation.journal | RESEARCH ON CHEMICAL INTERMEDIATES | - |
dc.contributor.googleauthor | Kim, Jinsung | - |
dc.contributor.googleauthor | Jeong, Cheonwoo | - |
dc.contributor.googleauthor | Lee, Jae-Hong | - |
dc.contributor.googleauthor | Suh, Young-Woong | - |
dc.relation.code | 2018002453 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF CHEMICAL ENGINEERING | - |
dc.identifier.pid | ywsuh | - |
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