Matches in SemOpenAlex for { <https://semopenalex.org/work/W2076107385> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W2076107385 endingPage "179" @default.
- W2076107385 startingPage "175" @default.
- W2076107385 abstract "The structure of dealuminated mordenites prepared at 340–358 K of hydrochloric acid was studied. 27Al MAS n.m.r. and XPS were measured to determine the species and depth profile of alumina, and these were corroborated with adsorption experiments using adsorbates of different sizes. Adsorption capacity of nitrogen was unaltered so that the structure of mordenite was retained, while that of 2,2,4-trimethylpentane with a larger kinetic diameter increased below 358 K of dealumination temperature, but then decreased above that. The H-mordenite (HM, Norton 100-H) contained a large amount of octahedral aluminum species (ca. 28%), and the nonframework aluminum was removed preferentially by the dealumination. Aluminum depth profile showed the homogeneous distribution on the inherent HM, but the enrichment on the samples prepared above 350 K. Based upon these findings, the following conclusions were drawn: (1) On the inherent HM, a small portion of nonframework aluminum near the pore opening disturbs the adsorption of large molecules: (2) The pore-opening size of the sample dealuminated at 358 K was large enough to adsorb 2,2,4-trimethylpentane: (3) However, upon the dealumination above 358 K, the pore opening was partly destroyed or blocked by nonframework alumina again to inhibit the adsorption of large molecules. Most of the aluminum impurity species seemed to be occluded as blocks or clusters in the mordenite. These variations of structure of the pore opening can be well related to those of the catalyst activity." @default.
- W2076107385 created "2016-06-24" @default.
- W2076107385 creator A5052532747 @default.
- W2076107385 creator A5057922581 @default.
- W2076107385 creator A5085723082 @default.
- W2076107385 date "1992-02-01" @default.
- W2076107385 modified "2023-09-23" @default.
- W2076107385 title "Change of pore-opening structure of mordenite upon dealumination by hydrochloric acid" @default.
- W2076107385 cites W1966641374 @default.
- W2076107385 cites W1988240331 @default.
- W2076107385 cites W1992015185 @default.
- W2076107385 cites W1992214743 @default.
- W2076107385 cites W2007521176 @default.
- W2076107385 cites W2021712082 @default.
- W2076107385 cites W2022978786 @default.
- W2076107385 cites W2035097206 @default.
- W2076107385 cites W2037550331 @default.
- W2076107385 cites W2040202135 @default.
- W2076107385 cites W2046905436 @default.
- W2076107385 cites W2052177521 @default.
- W2076107385 cites W2080938848 @default.
- W2076107385 cites W2084134636 @default.
- W2076107385 cites W2088066309 @default.
- W2076107385 cites W2159339969 @default.
- W2076107385 cites W2165937926 @default.
- W2076107385 doi "https://doi.org/10.1016/0144-2449(92)90080-9" @default.
- W2076107385 hasPublicationYear "1992" @default.
- W2076107385 type Work @default.
- W2076107385 sameAs 2076107385 @default.
- W2076107385 citedByCount "16" @default.
- W2076107385 countsByYear W20761073852013 @default.
- W2076107385 countsByYear W20761073852017 @default.
- W2076107385 countsByYear W20761073852022 @default.
- W2076107385 crossrefType "journal-article" @default.
- W2076107385 hasAuthorship W2076107385A5052532747 @default.
- W2076107385 hasAuthorship W2076107385A5057922581 @default.
- W2076107385 hasAuthorship W2076107385A5085723082 @default.
- W2076107385 hasConcept C105281773 @default.
- W2076107385 hasConcept C115624301 @default.
- W2076107385 hasConcept C147789679 @default.
- W2076107385 hasConcept C150394285 @default.
- W2076107385 hasConcept C161790260 @default.
- W2076107385 hasConcept C178790620 @default.
- W2076107385 hasConcept C179104552 @default.
- W2076107385 hasConcept C185592680 @default.
- W2076107385 hasConcept C198819137 @default.
- W2076107385 hasConcept C2777436746 @default.
- W2076107385 hasConcept C2777924179 @default.
- W2076107385 hasConcept C2778077586 @default.
- W2076107385 hasConcept C32909587 @default.
- W2076107385 hasConcept C513153333 @default.
- W2076107385 hasConcept C71987851 @default.
- W2076107385 hasConcept C8010536 @default.
- W2076107385 hasConceptScore W2076107385C105281773 @default.
- W2076107385 hasConceptScore W2076107385C115624301 @default.
- W2076107385 hasConceptScore W2076107385C147789679 @default.
- W2076107385 hasConceptScore W2076107385C150394285 @default.
- W2076107385 hasConceptScore W2076107385C161790260 @default.
- W2076107385 hasConceptScore W2076107385C178790620 @default.
- W2076107385 hasConceptScore W2076107385C179104552 @default.
- W2076107385 hasConceptScore W2076107385C185592680 @default.
- W2076107385 hasConceptScore W2076107385C198819137 @default.
- W2076107385 hasConceptScore W2076107385C2777436746 @default.
- W2076107385 hasConceptScore W2076107385C2777924179 @default.
- W2076107385 hasConceptScore W2076107385C2778077586 @default.
- W2076107385 hasConceptScore W2076107385C32909587 @default.
- W2076107385 hasConceptScore W2076107385C513153333 @default.
- W2076107385 hasConceptScore W2076107385C71987851 @default.
- W2076107385 hasConceptScore W2076107385C8010536 @default.
- W2076107385 hasIssue "2" @default.
- W2076107385 hasLocation W20761073851 @default.
- W2076107385 hasOpenAccess W2076107385 @default.
- W2076107385 hasPrimaryLocation W20761073851 @default.
- W2076107385 hasRelatedWork W1501395266 @default.
- W2076107385 hasRelatedWork W1539934381 @default.
- W2076107385 hasRelatedWork W1987101913 @default.
- W2076107385 hasRelatedWork W2013928678 @default.
- W2076107385 hasRelatedWork W2036187990 @default.
- W2076107385 hasRelatedWork W2049347487 @default.
- W2076107385 hasRelatedWork W2055822727 @default.
- W2076107385 hasRelatedWork W2152735919 @default.
- W2076107385 hasRelatedWork W2153588884 @default.
- W2076107385 hasRelatedWork W2915367095 @default.
- W2076107385 hasVolume "12" @default.
- W2076107385 isParatext "false" @default.
- W2076107385 isRetracted "false" @default.
- W2076107385 magId "2076107385" @default.
- W2076107385 workType "article" @default.