Matches in SemOpenAlex for { <https://semopenalex.org/work/W1963896195> ?p ?o ?g. }
Showing items 1 to 99 of
99
with 100 items per page.
- W1963896195 endingPage "524" @default.
- W1963896195 startingPage "516" @default.
- W1963896195 abstract "Flame aerosol technology has been used to prepare titania/silica mixed oxide nanoparticles. A stream of argon containing evaporated hexamethyldisiloxane and titanium-tetraisopropoxide was brought into a methane–oxygen diffusion flame. Upon condensation, nanoparticles of titania/silica with high titania dispersion were formed. The powders were characterized using transmission electron microscopy, nitrogen adsorption, pore size analysis, laser-assisted ion-coupled plasma mass spectroscopy, UV–VIS spectroscopy, and diffuse reflectance IR spectroscopy. The powders consisted of agglomerates of primary particles from 10 to 20 nm in diameter at high oxygen-to-methane ratios in the flame. The morphology changed to larger, spherical particles when low oxygen-to-methane ratios were used. The catalytic materials were tested for the epoxidation of 2-cyclohexenol by tert.-butylhydroperoxide at 90°C. The activity and selectivity were investigated as a function of flame parameters used for catalyst preparation. The flame made catalysts showed better selectivity for the epoxidation than corresponding aerogels, but at lower activity. Epoxidation selectivity referred to TBHP reached 93%, whereas olefin selectivity was 83% at 80% conversion. The best catalytic performance was obtained with nanoparticles containing 1 to 3.2 wt% titania. The rate and selectivity achieved with the flame made catalysts were independent of the oxygen-to-methane ratio in the flame at high oxygen flow rate, whereas at low oxygen flow rate the activity and selectivity decreased considerably." @default.
- W1963896195 created "2016-06-24" @default.
- W1963896195 creator A5032145937 @default.
- W1963896195 creator A5040833016 @default.
- W1963896195 creator A5063774939 @default.
- W1963896195 date "2001-10-01" @default.
- W1963896195 modified "2023-10-11" @default.
- W1963896195 title "Flame Made Titania/Silica Epoxidation Catalysts" @default.
- W1963896195 cites W1494505685 @default.
- W1963896195 cites W1554722995 @default.
- W1963896195 cites W1966433523 @default.
- W1963896195 cites W1968256284 @default.
- W1963896195 cites W1971742665 @default.
- W1963896195 cites W1976384941 @default.
- W1963896195 cites W1979546891 @default.
- W1963896195 cites W1990250899 @default.
- W1963896195 cites W1994833351 @default.
- W1963896195 cites W1996682013 @default.
- W1963896195 cites W1997238919 @default.
- W1963896195 cites W1998866598 @default.
- W1963896195 cites W2036973686 @default.
- W1963896195 cites W2037573451 @default.
- W1963896195 cites W2044851992 @default.
- W1963896195 cites W2051118901 @default.
- W1963896195 cites W2054244243 @default.
- W1963896195 cites W2059006316 @default.
- W1963896195 cites W2059991660 @default.
- W1963896195 cites W2064219666 @default.
- W1963896195 cites W2072002455 @default.
- W1963896195 cites W2082662063 @default.
- W1963896195 cites W2091583803 @default.
- W1963896195 cites W2108753031 @default.
- W1963896195 cites W2111072982 @default.
- W1963896195 cites W2153945532 @default.
- W1963896195 cites W2157154355 @default.
- W1963896195 cites W3994397 @default.
- W1963896195 cites W4232210592 @default.
- W1963896195 cites W4242249115 @default.
- W1963896195 cites W44017384 @default.
- W1963896195 cites W55332043 @default.
- W1963896195 doi "https://doi.org/10.1006/jcat.2001.3365" @default.
- W1963896195 hasPublicationYear "2001" @default.
- W1963896195 type Work @default.
- W1963896195 sameAs 1963896195 @default.
- W1963896195 citedByCount "45" @default.
- W1963896195 countsByYear W19638961952014 @default.
- W1963896195 countsByYear W19638961952015 @default.
- W1963896195 countsByYear W19638961952019 @default.
- W1963896195 countsByYear W19638961952021 @default.
- W1963896195 countsByYear W19638961952022 @default.
- W1963896195 crossrefType "journal-article" @default.
- W1963896195 hasAuthorship W1963896195A5032145937 @default.
- W1963896195 hasAuthorship W1963896195A5040833016 @default.
- W1963896195 hasAuthorship W1963896195A5063774939 @default.
- W1963896195 hasConcept C118792377 @default.
- W1963896195 hasConcept C127413603 @default.
- W1963896195 hasConcept C155672457 @default.
- W1963896195 hasConcept C156328458 @default.
- W1963896195 hasConcept C161790260 @default.
- W1963896195 hasConcept C178790620 @default.
- W1963896195 hasConcept C179104552 @default.
- W1963896195 hasConcept C185592680 @default.
- W1963896195 hasConcept C42360764 @default.
- W1963896195 hasConcept C516920438 @default.
- W1963896195 hasConcept C540031477 @default.
- W1963896195 hasConcept C65165184 @default.
- W1963896195 hasConceptScore W1963896195C118792377 @default.
- W1963896195 hasConceptScore W1963896195C127413603 @default.
- W1963896195 hasConceptScore W1963896195C155672457 @default.
- W1963896195 hasConceptScore W1963896195C156328458 @default.
- W1963896195 hasConceptScore W1963896195C161790260 @default.
- W1963896195 hasConceptScore W1963896195C178790620 @default.
- W1963896195 hasConceptScore W1963896195C179104552 @default.
- W1963896195 hasConceptScore W1963896195C185592680 @default.
- W1963896195 hasConceptScore W1963896195C42360764 @default.
- W1963896195 hasConceptScore W1963896195C516920438 @default.
- W1963896195 hasConceptScore W1963896195C540031477 @default.
- W1963896195 hasConceptScore W1963896195C65165184 @default.
- W1963896195 hasIssue "2" @default.
- W1963896195 hasLocation W19638961951 @default.
- W1963896195 hasOpenAccess W1963896195 @default.
- W1963896195 hasPrimaryLocation W19638961951 @default.
- W1963896195 hasRelatedWork W2006471881 @default.
- W1963896195 hasRelatedWork W2008590342 @default.
- W1963896195 hasRelatedWork W2036143465 @default.
- W1963896195 hasRelatedWork W2053494584 @default.
- W1963896195 hasRelatedWork W2074571151 @default.
- W1963896195 hasRelatedWork W2094288906 @default.
- W1963896195 hasRelatedWork W2114451818 @default.
- W1963896195 hasRelatedWork W2320243538 @default.
- W1963896195 hasRelatedWork W2619424135 @default.
- W1963896195 hasRelatedWork W2951237352 @default.
- W1963896195 hasVolume "203" @default.
- W1963896195 isParatext "false" @default.
- W1963896195 isRetracted "false" @default.
- W1963896195 magId "1963896195" @default.
- W1963896195 workType "article" @default.