Abstract: The invention relates to a multi-layer catalyst made from niobium for the catalytic conversion of hydrocarbons, comprising a) a support component made from a doped or undoped oxide or hydroxide of an element of the V sub-group of the periodic table, or mixtures thereof, b) a layer of a promoter compound, selected from oxygen, sulphur or phosphorus compounds of an element of the VI, VII and VIII sub-group or a phosphoxy compound and mixtures thereof and c) a layer comprising a compound of platinum metal. The invention further relates to a method for production of the catalyst and the use thereof.

Abstract: The invention relates to a testing device for tube bundle reactors, with a multitude of tubes (22) arranged as a bundle. At least one probe (12) is movably mounted in or on the testing device (10) and has, in particular, a drive (32) for its movement.

Abstract: The disclosed invention is a humidity indicating composition comprising (a) an organic pH indicator dye compound, (b) a Bronsted acid or base, (c) a polyol having the general formula HOCH2—(CHOH)n—CH2OH, wherein n can be 0, 1, 2, 3 or 4, and (d) a solvent; wherein said components (a), (b), (c) and (d) do not contain halogen and/or heavy metals. Furthermore, the invention relates to a humidity indicator card comprising a sheet substrate and the humidity indicating composition from which the solvent has been allowed to evaporate, and to a process for preparing said humidity indicator card.

Abstract: A nanocrystalline supported or unsupported copper oxide with a residual carbon content of <10% and a BET surface area >95 m2/g. Further, a method for the production of a supported or unsupported nanocrystalline copper oxide as well as the use thereof in catalysis, in particular in the steam reforming of methanol or in the hydrogenation of esters.

Abstract: A shell catalyst for the preparation of vinyl acetate monomer, comprising an oxidic porous catalyst support with an outer shell, containing metallic Pd and Au, wherein the framework structure of the porous catalyst support contains hafnium oxide units. This shell catalyst is suitable for the preparation of VAM and is characterized by a relatively high activity and VAM selectivity and maintains this activity and selectivity over relatively long service lives. Also, processes for the preparation and use of the shell catalyst.

Abstract: A method for purifying biodiesel, wherein a crude biodiesel is provided which contains at least one glycoside, and the crude biodiesel is reacted with an adsorbent which contains at least one smectite-silica gel mixed phase. The smectite-silica gel mixed phase has at least the following physical parameters: a specific surface area of more than 120 m2/g; a total pore volume of more than 0.35 ml/g; and a silicon content, calculated as SiO2, of at least 60 wt-%. A purified biodiesel is separated off from the adsorbent.

Abstract: The present invention relates to a catalyst for preparing phthalic anhydride by gas phase oxidation of o-xylene and/or naphthalene, comprising at least three catalyst zones which have different compositions and, from the gas inlet side toward the gas outlet side, are referred to as first, second and third catalyst zone, the catalyst zones having in each case an active composition comprising TiO2 with a content of Na of less than 0.

Abstract: The invention relates to a method for depolymerizing materials containing carbohydrates comprising the following steps: (a) treating a material containing carbohydrates with an inorganic catalyst in order to release defined monomeric or oligomeric building blocks from the material containing the carbohydrates; and (b) separating the defined monomeric or oligomeric building blocks produced in step (a) from the rest of the carbohydrate-containing material. Preferably, the inorganic catalyst used in step (a) comprises tectosilicates, phyilosilicates or hydrotalcites and more preferably zeolites or bentonites. The carbohydrate-containing material further comprises preferably LCB and the defined monomeric or oligomeric building blocks are preferably glucoses, xyloses, arabinoses and oligomers thereof. Other aspects of the invention refer to the use of solution promoters in combination with the inorganic catalyst.

Abstract: A method for partially coating a shaped body, the surface of which comprises an area to be coated and an area to be left clear, wherein with the method a protective layer is applied to the area to be left clear, a layer comprising a fluid phase is applied to the surface, and the coated shaped body is heated to a temperature at which the protective layer is removed residue-free by pyrolysis.

Abstract: A method for purifying biodiesel, biodiesel precursors, or the mixtures thereof, which contain at least one glycoside wherein biodiesel or a biodiesel precursor or a mixture thereof is incubated with at least one enzyme, in order to convert or cleave said at least one glycoside. In addition, the purified products which can be obtained according to this method and the use of at least one enzyme, which can cleave or convert glycoside, for purifying biodiesel or biodiesel precursors and the mixtures thereof.

Abstract: A method for the production of a nanocrystalline molybdenum mixed oxide, the use of the molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of acrolein to acrylic acid as well as a catalyst that contains the molybdenum mixed oxide.

Abstract: The invention relates to a method for reducing the tar content in gases resulting from a thermochemical gasification process of carbon-containing starting material and includes contacting of at least a part of the gas obtained from the gasification process with a catalyst containing noble metals, wherein the noble metals include at least two noble metals selected from the group consisting of Pt, Pd, Rh, Ir, Os, Ru and Re.

Abstract: A method for the production of a nanocrystalline bismuth-molybdenum mixed oxide, the use of the bismuth-molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of propylene to acrolein and/or acrylic acid or of isobutylene to methacrolein and/or methacrylic acid, as well as a catalyst that contains the bismuth-molybdenum mixed oxide.

Abstract: The invention relates to a method for reducing the tar content in gases resulting from a thermochemical gasification process of carbon-containing starting material and includes contacting of at least a part of the gas obtained from the gasification process with a catalyst containing noble metals. The invention is further characterized in that the gas to be treated is not brought into contact with a zirconium-based catalyst prior to the contract with the catalyst containing noble metals. The catalyst containing noble metals comprises at least one noble metal selected from the group consisting of Pt, Pd, Rh, Ir, Os, Ru and Re, provided that, in the case that the noble metal chosen is Pt, Pt is used in combination with at least one further noble metal or Ni.

Abstract: The invention is directed to a desiccant container which includes—a hanger element (12, 135) for suspension in a zone from which it is desired to remove moisture; a desiccant arrangement (14, 154) comprising at least one moisture permeable receptacle containing a supply of desiccant, the desiccant arrangement being—suspended from the hanger element (12, 135); and a flexible protective sleeve (18, 101), at least a part of which is moisture permeable, arranged about the desiccant arrangement (14, 154), wherein the sleeve is mounted on the hanger element (12, 135) independently from the desiccant arrangement.

Abstract: A charging device for a tube reactor has a plurality of metering chambers which can be filled with filling material, for example a catalytically coated carrier material. Each metering chamber is adjoined by a drop tube or some other filling device via which a tube of the filling device can be filled in each case. The metering chambers can each be filled via antechambers which are combined into one replaceable antechamber unit.

Abstract: A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at least one of these components is not used in the form of a solution, characterized in that a) at least one of the Components A and/or B which is not used in the form of a solution, shortly before or during mixing of the components, and/or b) the mixture containing the Components A and B is subjected to intensive grinding until an average particle size (D50) in the range of approx. 0.1 to 5 ?m is obtained, and optionally, after aging treatment or hydrothermal treatment, the resulting hydrotalcite product is separated, dried, and optionally calcinated.

Abstract: The invention relates to a method for separating proteins from liquid media, comprising providing a liquid medium containing proteins, providing a clay material which has: a specific surface greater than 150 m2/g, a pore volume greater than 0.35 ml/g, an ion exchange capacity greater than 40 meq/100 g, and a sediment volume in water of less than 15 ml/2 g, equilibrating said clay material to a pH of from 3.5 to 9.0, treating said liquid medium with the equilibrated clay material, and separating the purified, protein-depleted liquid medium from the clay material.

Abstract: The invention relates to a coating composition for diesel oxidation catalysts or a combination of diesel oxidation catalysts and diesel particle filters, said coating composition comprising a combination of a noble metal on a metal oxide, with the exception of cerium oxide, and a zeolite doped with iron. The invention also relates to a catalyst provided with the coating according to the invention, and to a method for treating the exhaust gas of diesel internal combustion engines.

Abstract: The present invention relates to a nanoparticulate composition comprising nanoparticles with a particle-size distribution of d90?10 ?m, and optionally a surface-active agent. The present invention further relates to a method for the production of such a nanoparticulate composition.