Bulk Ring-Opening Polymerization of ?-Caprolactone by Zeolitic Imidazolate Framework; Catalysis Letters; Vol. 149, iss. 8
| Parent link: | Catalysis Letters Vol. 149, iss. 8.— 2019.— [P. 2132-2141] |
|---|---|
| مؤلف مشترك: | |
| مؤلفون آخرون: | , , , |
| الملخص: | Title screen In this work, for the first time, zeolitic imidazolate frameworks (ZIFs?=?ZIF-8, ZIF-67, and Zn/Co-ZIF), obtained via spray drying, were used as heterogeneous catalysts for the ring opening polymerization of ?-Caprolactone without any co-catalyst or initiator. The catalytic activity of the spray dried ZIFs series varies in the order of Zn/Co-ZIF?<?ZIF-67?<?ZIF-8. It was found that the catalytic activities of ZIFs series correlate with the defects present in their structure. Among active sites of ZIFs, only the acid sites derived from structural defects are supposed to catalyse the polymerization reaction. Under optimal reaction conditions, ZIF-8 shows a superior catalytic activity compared to ZIF-67 or Zn/Co-ZIF and leads to the formation of higher molecular weight linear polycaprolactone. The recyclability test confirmed that the catalyst could be reused and no significant loss of catalytic activity was found after three uses. Режим доступа: по договору с организацией-держателем ресурса |
| اللغة: | الإنجليزية |
| منشور في: |
2019
|
| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.1007/s10562-019-02816-5 |
| التنسيق: | MixedMaterials الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663625 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 663625 | ||
| 005 | 20250514110258.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\34795 | ||
| 090 | |a 663625 | ||
| 100 | |a 20210220d2019 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a US | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Bulk Ring-Opening Polymerization of ?-Caprolactone by Zeolitic Imidazolate Framework |f Naz Farah, Mumtaz Fatima, Chaemchuen Somboon, F. V. K. Verpoort | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References : 32 tit.] | ||
| 330 | |a In this work, for the first time, zeolitic imidazolate frameworks (ZIFs?=?ZIF-8, ZIF-67, and Zn/Co-ZIF), obtained via spray drying, were used as heterogeneous catalysts for the ring opening polymerization of ?-Caprolactone without any co-catalyst or initiator. The catalytic activity of the spray dried ZIFs series varies in the order of Zn/Co-ZIF?<?ZIF-67?<?ZIF-8. It was found that the catalytic activities of ZIFs series correlate with the defects present in their structure. Among active sites of ZIFs, only the acid sites derived from structural defects are supposed to catalyse the polymerization reaction. Under optimal reaction conditions, ZIF-8 shows a superior catalytic activity compared to ZIF-67 or Zn/Co-ZIF and leads to the formation of higher molecular weight linear polycaprolactone. The recyclability test confirmed that the catalyst could be reused and no significant loss of catalytic activity was found after three uses. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Catalysis Letters | ||
| 463 | |t Vol. 149, iss. 8 |v [P. 2132-2141] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a ring-opening polymerization | |
| 610 | 1 | |a biodegradable polycaprolactone | |
| 610 | 1 | |a metal–organic frameworks | |
| 610 | 1 | |a zeolitic imidazole frameworks | |
| 610 | 1 | |a heterogeneous catalyst | |
| 701 | 0 | |a Naz Farah | |
| 701 | 0 | |a Mumtaz Fatima | |
| 701 | 0 | |a Chaemchuen Somboon |c chemist-technologist |c researcher at Tomsk Polytechnic University, Ph.D |f 1984- |3 (RuTPU)RU\TPU\pers\42620 | |
| 701 | 1 | |a Verpoort |b F. V. K. |c Chemical Engineer |c Professor of Tomsk Polytechnic University, doctor of chemical Sciences |f 1963- |g Frensis Valter Kornelius |3 (RuTPU)RU\TPU\pers\35059 |9 18334 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа химических и биомедицинских технологий (ИШХБМТ) |c (2017- ) |3 (RuTPU)RU\TPU\col\23537 |
| 801 | 2 | |a RU |b 63413507 |c 20210220 |g RCR | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1007/s10562-019-02816-5 | |
| 942 | |c CF | ||