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Fe-rich binder KU Leuven
The invention relates to binders for mortar or concrete comprising a mixture consisting of: a) from 40 to 95 wt% of an Fe-comprising glass or Fe-comprising metallurgical slag, wherein the glass or slag comprises more than 30 wt% Fe, expressed as Fe203, b) from 1 to 40 wt% of a calcium comprising additive, wherein the additive comprises more than 30 wt% Ca, expressed as calcium oxide and c) from 0.5 to 20 wt% of an alkali, wherein the sum of the percentages of a) b) and c) in the mixture, calculated on a dry basis, is 100%.
Fe-rich binder KU Leuven
The invention relates to binders for mortar or concrete comprising a mixture consisting of: a) from 40 to 95 wt% of an Fe-comprising glass or Fe-comprising metallurgical slag, wherein the glass or slag comprises more than 30 wt% Fe, expressed as Fe203, b) from 1 to 40 wt% of a calcium comprising additive, wherein the additive comprises more than 30 wt% Ca, expressed as calcium oxide and c) from 0.5 to 20 wt% of an alkali, wherein the sum of the percentages of a) b) and c) in the mixture, calculated on a dry basis, is 100%.
A method and a tip substrate for scanning probe microscopy Interuniversitair Micro-Electronica Centrum vzw
The invention is related to a method for performing SPM measurements, wherein a sample (3) is attached to a cantilever (4) and scanned across a tip. The tip is one of several tips present on a substrate (1) comprising at least two different types of tips (2a,2b) on its surface, thereby enabling to perform multiple SPM measurements requiring a different type of tip, without replacing the cantilever. The at least two different types of tips are different in terms of their material, in terms of their shape or size, and/or in terms of the presence or the type of active or passive components ...
Fractionation and depolymerisation of lignocellulosic material KU Leuven
Lignocellulose constitutes an alluring renewable feedstock for the production of bio-based chemicals. This contribution demonstrates for the first time a chemocatalytic biorefinery concept that produces three separate product fractions of valuable product families at high yield and purity from lignocellulosic biomass; the product families, merely comprising of stable products, are (i) a lignin oil enriched with high contents of lignin-derived (mono)phenolics, (ii) essentially humin (furanic oligomers)-free hemicellulose-derived polyols, and (iii) a cellulose pulp. This is achieved by ...
Fractionation and depolymerisation of lignocellulosic material KU Leuven
Lignocellulose constitutes an alluring renewable feedstock for the production of bio- based chemicals. This contribution demonstrates for the first time a chemocatalytic biorefinery concept that produces three separate product fractions of valuable product families at high yield and purity from lignocellulosic biomass; the product families, merely comprising of stable products, are (i) a lignin oil enriched with high contents of lignin-derived (mono)phenolics, (ii) essentially humin (furanic oligomers)-free hemicellulose-derived polyols, and (iii) a cellulose pulp. This is achieved by ...
Optical semiconductor device and method for making the device KU Leuven
An optical semiconductor device comprises, on a substrate, a fin of diamond-cubic semiconductor material and, at the base of the fin, a slab of that semiconductor material, in a diamond-hexagonal structure, that extends over the full width of the fin, the slab being configured as an optically active material. This semiconductor material can contain silicon. A method for manufacturing the optical semiconductor device comprises annealing the sidewalls of the fin, thereby inducing a stress gradient along the width of the fin.
Optical semiconductor device and method for making the device KU Leuven
An optical semiconductor device comprises, on a substrate, a fin of diamond-cubic semiconductor material and, at the base of the fin, a slab of that semiconductor material, in a diamond-hexagonal structure, that extends over the full width of the fin, the slab being configured as an optically active material. This semiconductor material can contain silicon. A method for manufacturing the optical semiconductor device comprises annealing the sidewalls of the fin, thereby inducing a stress gradient along the width of the fin.
Systems based on 5-bromo-7-azaindole derivatives as future solid emitters KU Leuven
The present invention relates to a family of compounds derived from 5-bromo-7-azaindole, to which alkyl chains are incorporated in one of the nitrogen atoms to render the compounds soluble in organic solvents, and to which 4-(diphenylamino)phenylboronic acid derivatives are incorporated in position 5. These structural modifications increase the emission of the derivative in the solid state. The incorporation of aldehyde and 2-cyanobut-2-enoic acid derivatives in position 3 makes the compounds easier to anchor in different systems. Owing to this feature, these compounds can be used for ...
Cyclo-depolymerisation of polybutadiene KU Leuven
In general the present invention concerns a method for cyclo-depolymerisation of polybutadiene to large macrocycles by metathesis catalysts. More specifically this invention relates to a novel process for the degradation by olefin metathesis, forming unsaturated macrocycles, prepared by metathesis of a 1,3-butadiene polymer, such as polybutadiene, or of polymers containing such 1,3-butadiene polymer and of rubbers or rubber compositions or rubber nanocomposites, for instance comprising butadiene.