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Advances in Science and Technology, 2010
Aerogels are often largely mesoporous solids, with a porosity which may exceed 90 vol% and a specific surface area up to 1000 m2 g-1. Such materials were first obtained by Kistler in 1932, and designate gels in which the liquid was replaced with a gas without collapsing the gel solid network. Contrary to xerogels dried from wet gels by evaporation with
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Aerogels are often largely mesoporous solids, with a porosity which may exceed 90 vol% and a specific surface area up to 1000 m2 g-1. Such materials were first obtained by Kistler in 1932, and designate gels in which the liquid was replaced with a gas without collapsing the gel solid network. Contrary to xerogels dried from wet gels by evaporation with
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Homogeneous catalysts to solid catalysts
Current Opinion in Solid State and Materials Science, 1996Abstract Recent advances have been made in the transformation of homogeneous to solid catalysts. They include the use of metal complexes immobilized on organic and inorganic supports, solid acids and bases, redox molecular sieves as solid catalysts for liquid phase oxidations, zeolite-encapsulated metal complexes and supported liquid phase catalysts.
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2011
A solid particulate catalyst free from an external carrier comprising (i) a complex of Formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR2-, -R'2Ge-, wherein each R' is independently a hydrogen atom, Cl-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-
BOREALIS AG +3 more
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A solid particulate catalyst free from an external carrier comprising (i) a complex of Formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR2-, -R'2Ge-, wherein each R' is independently a hydrogen atom, Cl-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-
BOREALIS AG +3 more
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Catalyst supports and supported catalysts
Applied Catalysis, 1988M.F.M. Post, P.W. Lednor
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Are Heterogeneous Catalysts Precursors to Homogeneous Catalysts?
Journal of the American Chemical Society, 2001I W, Davies +3 more
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