Matches in SemOpenAlex for { <https://semopenalex.org/work/W2021382009> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2021382009 endingPage "140" @default.
- W2021382009 startingPage "125" @default.
- W2021382009 abstract "Abstract Fibrous mineral sepiolite is formed of staggered talc sheets. The discontinuous octahedral layers provide for infinite channels along the fiber axis with cross-section ~(10 × 4) A2. During crystal growth, a second set of irregularly shaped pores with a diameter around 100 A is created within the fiber. Zeolitic water fills the narrow and regular channels and is eliminated by outgassing at 100 ° C. At that stage, the specific surface area is ~300 m 2 g . Upon activation at increasing temperature, the structure folds, and ultimately collapses (~500°C), leaving a surface area ~150 m 2 g . The natural mineral lattice is almost neutral, having a cation-exchange capacity (CEC) in the order of 0.07 meq.g−1. It is shown that mild treatment with NaAlO2 results in partial Si-by-Al substitution in the tetrahedral layer. The CEC is almost tripled, and the residual surface area after calcination is about the same as in the original material. The alumination process generated Lewis sites evidenced by pyridine adsorption study. The mechanism of alumination, as well as the structural modifications upon calcination, are discussed on the basis of 27Al and 29Si MAS-NMR spectroscopy. Possible uses of the Al modified sepiolite as catalyst and catalyst support are proposed." @default.
- W2021382009 created "2016-06-24" @default.
- W2021382009 creator A5035278574 @default.
- W2021382009 creator A5081558012 @default.
- W2021382009 date "1992-05-01" @default.
- W2021382009 modified "2023-09-26" @default.
- W2021382009 title "AL modified sepiolite as catalyst or catalyst support" @default.
- W2021382009 cites W1973197277 @default.
- W2021382009 cites W1983369387 @default.
- W2021382009 cites W1995680749 @default.
- W2021382009 cites W2017563655 @default.
- W2021382009 cites W2037148638 @default.
- W2021382009 cites W2051430702 @default.
- W2021382009 cites W2055032162 @default.
- W2021382009 cites W2079156506 @default.
- W2021382009 cites W2103879104 @default.
- W2021382009 cites W2128089091 @default.
- W2021382009 cites W2139810635 @default.
- W2021382009 cites W322546843 @default.
- W2021382009 doi "https://doi.org/10.1016/0920-5861(92)80017-h" @default.
- W2021382009 hasPublicationYear "1992" @default.
- W2021382009 type Work @default.
- W2021382009 sameAs 2021382009 @default.
- W2021382009 citedByCount "30" @default.
- W2021382009 countsByYear W20213820092014 @default.
- W2021382009 countsByYear W20213820092016 @default.
- W2021382009 countsByYear W20213820092018 @default.
- W2021382009 countsByYear W20213820092019 @default.
- W2021382009 countsByYear W20213820092020 @default.
- W2021382009 countsByYear W20213820092021 @default.
- W2021382009 countsByYear W20213820092022 @default.
- W2021382009 crossrefType "journal-article" @default.
- W2021382009 hasAuthorship W2021382009A5035278574 @default.
- W2021382009 hasAuthorship W2021382009A5081558012 @default.
- W2021382009 hasConcept C127413603 @default.
- W2021382009 hasConcept C161790260 @default.
- W2021382009 hasConcept C175583648 @default.
- W2021382009 hasConcept C178394782 @default.
- W2021382009 hasConcept C178790620 @default.
- W2021382009 hasConcept C185592680 @default.
- W2021382009 hasConcept C206139338 @default.
- W2021382009 hasConcept C2781151301 @default.
- W2021382009 hasConcept C42360764 @default.
- W2021382009 hasConceptScore W2021382009C127413603 @default.
- W2021382009 hasConceptScore W2021382009C161790260 @default.
- W2021382009 hasConceptScore W2021382009C175583648 @default.
- W2021382009 hasConceptScore W2021382009C178394782 @default.
- W2021382009 hasConceptScore W2021382009C178790620 @default.
- W2021382009 hasConceptScore W2021382009C185592680 @default.
- W2021382009 hasConceptScore W2021382009C206139338 @default.
- W2021382009 hasConceptScore W2021382009C2781151301 @default.
- W2021382009 hasConceptScore W2021382009C42360764 @default.
- W2021382009 hasIssue "2" @default.
- W2021382009 hasLocation W20213820091 @default.
- W2021382009 hasOpenAccess W2021382009 @default.
- W2021382009 hasPrimaryLocation W20213820091 @default.
- W2021382009 hasRelatedWork W1992796432 @default.
- W2021382009 hasRelatedWork W2015944863 @default.
- W2021382009 hasRelatedWork W2050355818 @default.
- W2021382009 hasRelatedWork W2056727290 @default.
- W2021382009 hasRelatedWork W2071464596 @default.
- W2021382009 hasRelatedWork W2316086959 @default.
- W2021382009 hasRelatedWork W2460265184 @default.
- W2021382009 hasRelatedWork W2526623851 @default.
- W2021382009 hasRelatedWork W4283768088 @default.
- W2021382009 hasRelatedWork W4284971259 @default.
- W2021382009 hasVolume "14" @default.
- W2021382009 isParatext "false" @default.
- W2021382009 isRetracted "false" @default.
- W2021382009 magId "2021382009" @default.
- W2021382009 workType "article" @default.