Abstract:
Disclosed are a silicate-based foamed material which has a density of less than 25 kg/m3, an SiO2:Al2O3 molar ratio of more than 20:1, and an SiO2:Me2O molar ratio of more than 50:1, wherein Me represents an alkali metal, the use thereof for heat insulation or sound-proofing purposes, and methods for the production thereof by mixing a dispersion of SiO2 particles that have an average diameter ranging from 1 to 100 nm with a surfactant and a foaming agent at temperatures below 50 °C and expanding said mixture by heating the same to a temperature ranging from 60 to 100 °C or by relieving the pressure.
Abstract:
Powdery preparations of surface-modified, nanoparticulate particles of at least one metal oxide, metal hydroxide and/or metal oxyhydroxide are disclosed, as well as a method for preparing the same and their use for cosmetic sunscreen preparations, as stabilisers in plastics and as active antimicrobial substances. Also disclosed is a method for producing aqueous suspensions of surface-modified, nanoparticulate particles of at least one metal oxide, metal hydroxide and/or metal oxyhydroxide.
Abstract:
In a process for producing catalyst mouldings whose active mass is a multi-element oxide, a finely divided precursor mixture is moulded, with the admixture of boron nitride, to produce the desired geometry, then thermally treated.
Abstract:
The invention relates to a method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane on a multi-metal oxide mass, said mass containing the elements Mo, V, Te and/or Sb and having a specific X-ray diffractogram.
Abstract:
The present invention relates to a mixture comprising at least one plastic K and 0.1 to 50% by weight, relative to the entire mixture, of at least one compound A, selected from the group consisting of borophosphates, borate phosphates, and metal borophosphates and mixtures thereof, to a method for producing said mixture, and to the use of said mixture as a flame proofing agent.