Matches in SemOpenAlex for { <https://semopenalex.org/work/W2550872656> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2550872656 endingPage "440" @default.
- W2550872656 startingPage "435" @default.
- W2550872656 abstract "From environmental and economic points of view, it is highly desirable to develop a clean and efficient catalytic process to produce epoxides. An attractive approach is to use a solid, recyclable catalyst and molecular oxygen as the oxidant without any sacrificial reductant or other additives. Nonetheless, the catalysts reported up to now still cannot balance catalytic activity with epoxide selectivity. It is of great importance to explore novel catalysts with both high activity and selectivity for the epoxidation of olefins. In this work, cobalt(II) acetylacetonate (Co(acac)(2)) was covalently bonded to the silica surface of SBA-15 molecular sieve by multi-step grafting using 3-aminopropytrimethoxysilane (APTS) as coupling agent. Characterizations with nitrogen physisorption, X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis suggested that the metal complex was successfully immobilized on the aminosilane-modified SBA-15 surface and the channel structure remained intact. The synthesized Co(acac)(2)APTS@SBA-15 catalyst was used in the epoxidation of trans-stilbene (TS) with molecular oxygen. Compared to the sample prepared by the impregnation method as well as Co(acac)(2) solutions under the same reaction conditions, the Co(acac)(2) immobilized catalyst exhibited remarkably higher TS conversion and trans-stilbene oxide (TSO) selectivity. An increase in TS conversion with Co content was observed when the Co loading was lower than 0.70% and the 0.70Co(acac)(2)APTS@SBA-15 sample exhibited the best catalytic performance. Up to 50.1% of TS conversion could be achieved within 6 h, affording TSO selectivity as high as 96.7%. The superior catalytic performance of this particular catalyst is attributed to the high activity of the immobilized Co(acac)(2) species on SBA-15. Copyright (C) 2016 John Wiley & Sons, Ltd." @default.
- W2550872656 created "2016-11-30" @default.
- W2550872656 creator A5006837177 @default.
- W2550872656 creator A5041145137 @default.
- W2550872656 creator A5044794520 @default.
- W2550872656 creator A5052900152 @default.
- W2550872656 creator A5057209439 @default.
- W2550872656 creator A5057979028 @default.
- W2550872656 creator A5075171163 @default.
- W2550872656 date "2016-03-17" @default.
- W2550872656 modified "2023-10-16" @default.
- W2550872656 title "Cobalt(II) acetylacetonate complex immobilized on aminosilane-modified SBA-15 as an efficient catalyst for epoxidation of<i>trans</i>-stilbene with molecular oxygen" @default.
- W2550872656 cites W1515405481 @default.
- W2550872656 cites W1965767145 @default.
- W2550872656 cites W1970495094 @default.
- W2550872656 cites W1988950657 @default.
- W2550872656 cites W1994717338 @default.
- W2550872656 cites W1995041236 @default.
- W2550872656 cites W1998797674 @default.
- W2550872656 cites W2006118607 @default.
- W2550872656 cites W2015864415 @default.
- W2550872656 cites W2021952274 @default.
- W2550872656 cites W2037131976 @default.
- W2550872656 cites W2068714117 @default.
- W2550872656 cites W2072270208 @default.
- W2550872656 cites W2076337420 @default.
- W2550872656 cites W2077599350 @default.
- W2550872656 cites W2094788304 @default.
- W2550872656 cites W2113892439 @default.
- W2550872656 cites W2115674402 @default.
- W2550872656 cites W2322301567 @default.
- W2550872656 cites W4206552432 @default.
- W2550872656 doi "https://doi.org/10.1002/aoc.3451" @default.
- W2550872656 hasPublicationYear "2016" @default.
- W2550872656 type Work @default.
- W2550872656 sameAs 2550872656 @default.
- W2550872656 citedByCount "18" @default.
- W2550872656 countsByYear W25508726562017 @default.
- W2550872656 countsByYear W25508726562018 @default.
- W2550872656 countsByYear W25508726562019 @default.
- W2550872656 countsByYear W25508726562020 @default.
- W2550872656 countsByYear W25508726562021 @default.
- W2550872656 countsByYear W25508726562022 @default.
- W2550872656 countsByYear W25508726562023 @default.
- W2550872656 crossrefType "journal-article" @default.
- W2550872656 hasAuthorship W2550872656A5006837177 @default.
- W2550872656 hasAuthorship W2550872656A5041145137 @default.
- W2550872656 hasAuthorship W2550872656A5044794520 @default.
- W2550872656 hasAuthorship W2550872656A5052900152 @default.
- W2550872656 hasAuthorship W2550872656A5057209439 @default.
- W2550872656 hasAuthorship W2550872656A5057979028 @default.
- W2550872656 hasAuthorship W2550872656A5075171163 @default.
- W2550872656 hasConcept C161790260 @default.
- W2550872656 hasConcept C178790620 @default.
- W2550872656 hasConcept C185592680 @default.
- W2550872656 hasConcept C188027245 @default.
- W2550872656 hasConcept C21951064 @default.
- W2550872656 hasConcept C2992086430 @default.
- W2550872656 hasConcept C515602321 @default.
- W2550872656 hasConcept C540031477 @default.
- W2550872656 hasConceptScore W2550872656C161790260 @default.
- W2550872656 hasConceptScore W2550872656C178790620 @default.
- W2550872656 hasConceptScore W2550872656C185592680 @default.
- W2550872656 hasConceptScore W2550872656C188027245 @default.
- W2550872656 hasConceptScore W2550872656C21951064 @default.
- W2550872656 hasConceptScore W2550872656C2992086430 @default.
- W2550872656 hasConceptScore W2550872656C515602321 @default.
- W2550872656 hasConceptScore W2550872656C540031477 @default.
- W2550872656 hasIssue "6" @default.
- W2550872656 hasLocation W25508726561 @default.
- W2550872656 hasOpenAccess W2550872656 @default.
- W2550872656 hasPrimaryLocation W25508726561 @default.
- W2550872656 hasRelatedWork W1992152522 @default.
- W2550872656 hasRelatedWork W2026630328 @default.
- W2550872656 hasRelatedWork W2029462434 @default.
- W2550872656 hasRelatedWork W2049248358 @default.
- W2550872656 hasRelatedWork W2066976514 @default.
- W2550872656 hasRelatedWork W2326699526 @default.
- W2550872656 hasRelatedWork W2352284304 @default.
- W2550872656 hasRelatedWork W2362329393 @default.
- W2550872656 hasRelatedWork W2595788618 @default.
- W2550872656 hasRelatedWork W4248172624 @default.
- W2550872656 hasVolume "30" @default.
- W2550872656 isParatext "false" @default.
- W2550872656 isRetracted "false" @default.
- W2550872656 magId "2550872656" @default.
- W2550872656 workType "article" @default.