Matches in SemOpenAlex for { <https://semopenalex.org/work/W2077068688> ?p ?o ?g. }
- W2077068688 endingPage "165" @default.
- W2077068688 startingPage "155" @default.
- W2077068688 abstract "High Si/Al ratio ferrierite (Si/Al=59) synthesized using pyridine as structure-directing agent was found to show a high selectivity from very short times on stream (5 min TOS) during the skeletal isomerization of n-butenes. Such a high initial selectivity is accompanied by an unusually high stability with TOS even under reaction conditions that favor the oligomerization of the olefins (low temperatures and high n-butenes partial pressure). In contrast to what has been previously established for ferrierite with lower Si/Al ratios, the isomerization reaction occurs with a high selectivity without appreciable formation of carbonaceous deposits, as determined by elemental and thermogravimetric analysis of the zeolite after reaction. Thus, at 350°C and 0.1 atm partial pressure only about 0.3 wt% carbon was formed after 3.5 h on stream on the high-silica ferrierite (FER59 sample), whereas it amounted to ca. 5 wt% for a commercial low Si/Al ratio ferrierite (Si/Al=8.5, FERTOS sample) under the same reaction conditions. As a result, the acidity and porosity of the FER59 ferrierite remained unaltered after 3.5 h on stream under the above conditions, while both parameters significantly decreased for the FERTOS catalyst. These results, together with the analysis of the initial selectivity with temperature and partial pressure, indicate that isobutene is selectively formed in the ferrierite structure through a monomolecular reaction mechanism without the need of invoking the presence of coke deposits. It appears that reducing the density of acid sites in ferrierite by increasing the framework Si/Al ratio to the required levels is the key parameter to control the stability and selectivity of the zeolite during n-butenes isomerization." @default.
- W2077068688 created "2016-06-24" @default.
- W2077068688 creator A5009539565 @default.
- W2077068688 creator A5082689067 @default.
- W2077068688 date "1999-07-01" @default.
- W2077068688 modified "2023-10-17" @default.
- W2077068688 title "Selective isomerization of n-butenes to isobutene on high Si/Al ratio ferrierite in the absence of coke deposits: implications on the reaction mechanism" @default.
- W2077068688 cites W1262399155 @default.
- W2077068688 cites W1485039623 @default.
- W2077068688 cites W1534845626 @default.
- W2077068688 cites W1565234532 @default.
- W2077068688 cites W1585366806 @default.
- W2077068688 cites W1595846898 @default.
- W2077068688 cites W1598915923 @default.
- W2077068688 cites W1975733607 @default.
- W2077068688 cites W1978035987 @default.
- W2077068688 cites W1983978509 @default.
- W2077068688 cites W1985667463 @default.
- W2077068688 cites W1987325000 @default.
- W2077068688 cites W1990757228 @default.
- W2077068688 cites W1992439690 @default.
- W2077068688 cites W2009034091 @default.
- W2077068688 cites W2011368892 @default.
- W2077068688 cites W2018838569 @default.
- W2077068688 cites W2022840486 @default.
- W2077068688 cites W2023655316 @default.
- W2077068688 cites W2026247587 @default.
- W2077068688 cites W2027084828 @default.
- W2077068688 cites W2034308726 @default.
- W2077068688 cites W2035270116 @default.
- W2077068688 cites W2040676151 @default.
- W2077068688 cites W2042444832 @default.
- W2077068688 cites W2056974808 @default.
- W2077068688 cites W2060469699 @default.
- W2077068688 cites W2081127465 @default.
- W2077068688 cites W2089009708 @default.
- W2077068688 cites W2094251854 @default.
- W2077068688 cites W2095381735 @default.
- W2077068688 cites W2480040485 @default.
- W2077068688 cites W2949561164 @default.
- W2077068688 cites W4243850618 @default.
- W2077068688 cites W4376849513 @default.
- W2077068688 cites W90352815 @default.
- W2077068688 doi "https://doi.org/10.1016/s0926-860x(99)00051-4" @default.
- W2077068688 hasPublicationYear "1999" @default.
- W2077068688 type Work @default.
- W2077068688 sameAs 2077068688 @default.
- W2077068688 citedByCount "43" @default.
- W2077068688 countsByYear W20770686882012 @default.
- W2077068688 countsByYear W20770686882013 @default.
- W2077068688 countsByYear W20770686882015 @default.
- W2077068688 countsByYear W20770686882016 @default.
- W2077068688 countsByYear W20770686882017 @default.
- W2077068688 countsByYear W20770686882018 @default.
- W2077068688 countsByYear W20770686882019 @default.
- W2077068688 countsByYear W20770686882020 @default.
- W2077068688 countsByYear W20770686882023 @default.
- W2077068688 crossrefType "journal-article" @default.
- W2077068688 hasAuthorship W2077068688A5009539565 @default.
- W2077068688 hasAuthorship W2077068688A5082689067 @default.
- W2077068688 hasConcept C118792377 @default.
- W2077068688 hasConcept C126661725 @default.
- W2077068688 hasConcept C161790260 @default.
- W2077068688 hasConcept C178790620 @default.
- W2077068688 hasConcept C179104552 @default.
- W2077068688 hasConcept C185592680 @default.
- W2077068688 hasConcept C2776164856 @default.
- W2077068688 hasConcept C2778077586 @default.
- W2077068688 hasConcept C2778256978 @default.
- W2077068688 hasConcept C2778597550 @default.
- W2077068688 hasConcept C2779485729 @default.
- W2077068688 hasConcept C2780385392 @default.
- W2077068688 hasConceptScore W2077068688C118792377 @default.
- W2077068688 hasConceptScore W2077068688C126661725 @default.
- W2077068688 hasConceptScore W2077068688C161790260 @default.
- W2077068688 hasConceptScore W2077068688C178790620 @default.
- W2077068688 hasConceptScore W2077068688C179104552 @default.
- W2077068688 hasConceptScore W2077068688C185592680 @default.
- W2077068688 hasConceptScore W2077068688C2776164856 @default.
- W2077068688 hasConceptScore W2077068688C2778077586 @default.
- W2077068688 hasConceptScore W2077068688C2778256978 @default.
- W2077068688 hasConceptScore W2077068688C2778597550 @default.
- W2077068688 hasConceptScore W2077068688C2779485729 @default.
- W2077068688 hasConceptScore W2077068688C2780385392 @default.
- W2077068688 hasIssue "1" @default.
- W2077068688 hasLocation W20770686881 @default.
- W2077068688 hasOpenAccess W2077068688 @default.
- W2077068688 hasPrimaryLocation W20770686881 @default.
- W2077068688 hasRelatedWork W1598915923 @default.
- W2077068688 hasRelatedWork W1964878756 @default.
- W2077068688 hasRelatedWork W1969779267 @default.
- W2077068688 hasRelatedWork W2026247587 @default.
- W2077068688 hasRelatedWork W2027123251 @default.
- W2077068688 hasRelatedWork W2036187990 @default.
- W2077068688 hasRelatedWork W2040794305 @default.
- W2077068688 hasRelatedWork W2363304269 @default.
- W2077068688 hasRelatedWork W2366144817 @default.
- W2077068688 hasRelatedWork W2386553014 @default.