Matches in SemOpenAlex for { <https://semopenalex.org/work/W2102377880> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2102377880 endingPage "194" @default.
- W2102377880 startingPage "189" @default.
- W2102377880 abstract "In this work we obtained microporous and mesoporous silica gels by sol-gel processing. Tetraethylortosilicate (TEOS) was used as precursor. Nitric acid and hydrofluoric acid were used as catalysts. In order to study the affect of formamide as drying additive, we used a molar ratio alkoxide/formamide of 1/1. The performance of formamide in obtaining crack-free gels was evaluated through monolithicity measurements. The structural evolution occurring in the interconnected network of the gels during thermal treatment was monitored by Fourier transform infrared spectroscopy (FTIR), shrinkage and density measurements and nitrogen gas sorption. We noted that in the presence of formamide, the Si-O-Si bonds are stronger and belong to a more cross-linked structure. The samples obtained in the presence of formamide have larger pore volume and its pore structure is in the range of mesoporosity. The samples obtained without additive are microporous. Formamide allowed the preparation of crack-free silica gels stabilized at high temperatures." @default.
- W2102377880 created "2016-06-24" @default.
- W2102377880 creator A5017729083 @default.
- W2102377880 creator A5081612163 @default.
- W2102377880 date "2001-07-01" @default.
- W2102377880 modified "2023-09-25" @default.
- W2102377880 title "Preparation of silica by sol-gel method using formamide" @default.
- W2102377880 cites W1965958412 @default.
- W2102377880 cites W1971618132 @default.
- W2102377880 cites W1975044642 @default.
- W2102377880 cites W2000127585 @default.
- W2102377880 cites W2004738523 @default.
- W2102377880 cites W2005991926 @default.
- W2102377880 cites W2027476710 @default.
- W2102377880 cites W2035417725 @default.
- W2102377880 cites W2040428852 @default.
- W2102377880 cites W2064933973 @default.
- W2102377880 cites W2073985397 @default.
- W2102377880 cites W2086536022 @default.
- W2102377880 cites W2127456706 @default.
- W2102377880 cites W2138504228 @default.
- W2102377880 cites W2150469593 @default.
- W2102377880 doi "https://doi.org/10.1590/s1516-14392001000300008" @default.
- W2102377880 hasPublicationYear "2001" @default.
- W2102377880 type Work @default.
- W2102377880 sameAs 2102377880 @default.
- W2102377880 citedByCount "121" @default.
- W2102377880 countsByYear W21023778802012 @default.
- W2102377880 countsByYear W21023778802013 @default.
- W2102377880 countsByYear W21023778802014 @default.
- W2102377880 countsByYear W21023778802015 @default.
- W2102377880 countsByYear W21023778802016 @default.
- W2102377880 countsByYear W21023778802017 @default.
- W2102377880 countsByYear W21023778802018 @default.
- W2102377880 countsByYear W21023778802019 @default.
- W2102377880 countsByYear W21023778802020 @default.
- W2102377880 countsByYear W21023778802021 @default.
- W2102377880 countsByYear W21023778802022 @default.
- W2102377880 countsByYear W21023778802023 @default.
- W2102377880 crossrefType "journal-article" @default.
- W2102377880 hasAuthorship W2102377880A5017729083 @default.
- W2102377880 hasAuthorship W2102377880A5081612163 @default.
- W2102377880 hasBestOaLocation W21023778801 @default.
- W2102377880 hasConcept C127413603 @default.
- W2102377880 hasConcept C159985019 @default.
- W2102377880 hasConcept C160892712 @default.
- W2102377880 hasConcept C161790260 @default.
- W2102377880 hasConcept C178790620 @default.
- W2102377880 hasConcept C185592680 @default.
- W2102377880 hasConcept C192562407 @default.
- W2102377880 hasConcept C2777496208 @default.
- W2102377880 hasConcept C2778270854 @default.
- W2102377880 hasConcept C2778504605 @default.
- W2102377880 hasConcept C42360764 @default.
- W2102377880 hasConcept C82776694 @default.
- W2102377880 hasConcept C86381522 @default.
- W2102377880 hasConceptScore W2102377880C127413603 @default.
- W2102377880 hasConceptScore W2102377880C159985019 @default.
- W2102377880 hasConceptScore W2102377880C160892712 @default.
- W2102377880 hasConceptScore W2102377880C161790260 @default.
- W2102377880 hasConceptScore W2102377880C178790620 @default.
- W2102377880 hasConceptScore W2102377880C185592680 @default.
- W2102377880 hasConceptScore W2102377880C192562407 @default.
- W2102377880 hasConceptScore W2102377880C2777496208 @default.
- W2102377880 hasConceptScore W2102377880C2778270854 @default.
- W2102377880 hasConceptScore W2102377880C2778504605 @default.
- W2102377880 hasConceptScore W2102377880C42360764 @default.
- W2102377880 hasConceptScore W2102377880C82776694 @default.
- W2102377880 hasConceptScore W2102377880C86381522 @default.
- W2102377880 hasIssue "3" @default.
- W2102377880 hasLocation W21023778801 @default.
- W2102377880 hasLocation W21023778802 @default.
- W2102377880 hasLocation W21023778803 @default.
- W2102377880 hasOpenAccess W2102377880 @default.
- W2102377880 hasPrimaryLocation W21023778801 @default.
- W2102377880 hasRelatedWork W1512239778 @default.
- W2102377880 hasRelatedWork W2094585716 @default.
- W2102377880 hasRelatedWork W2409907841 @default.
- W2102377880 hasRelatedWork W2897153250 @default.
- W2102377880 hasRelatedWork W2953137475 @default.
- W2102377880 hasRelatedWork W4283022318 @default.
- W2102377880 hasRelatedWork W4288886313 @default.
- W2102377880 hasRelatedWork W4307655505 @default.
- W2102377880 hasRelatedWork W4376849489 @default.
- W2102377880 hasRelatedWork W1995235629 @default.
- W2102377880 hasVolume "4" @default.
- W2102377880 isParatext "false" @default.
- W2102377880 isRetracted "false" @default.
- W2102377880 magId "2102377880" @default.
- W2102377880 workType "article" @default.