Abstract:
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines mit Metalloxiden beladenen Kohlenstoffsubstrats, insbesondere eines metalloxidische Nanopartikel enthaltenden Kohlenstoffmaterials, welches sich vorzugsweise für die Verwendung in einem Katalysator und/oder als Katalysator eignet, wobei in einem ersten Verfahrensschritt Nanopartikel von Metalloxiden in eine Matrix auf Basis mindestens eines organischen Polymers eingebracht werden, insbesondere hierin dispergiert werden, und nachfolgend in einem zweiten Verfahrensschritt die die Nanopartikel enthaltende Polymermatrix zu Kohlenstoff carbonisiert wird, gegebenenfalls gefolgt von einem dritten Verfahrensschritt der Aktivierung.
Abstract:
The invention concerns a catalyst for producing a bio-based acrylic acid, comprising phosphate anions and at least one monovalent cation and at least one polyvalent cation. A method to produce the catalyst is also provided. Lactic acid, lactic acid derivatives, or mixtures thereof are dehydrated using the catalyst in a process to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof.
Abstract:
A process is described for producing a powder batch comprises a plurality of particles, wherein the particles include (a) a first catalytically active component comprising at least one transition metal or a compound thereof; (b) a second component different from said first component and capable of removing oxygen from, or releasing oxygen to, an exhaust gas stream; and (c) a third component different from said first and second components and comprising a refractory support. The process comprises providing a precursor medium comprising a liquid vehicle and a precursor to al least one of said components (a) to (c) and heating droplets of said precursor medium carried in a gas stream to remove at least part of the liquid vehicle and chemically convert said precursor to said at least one component.
Abstract:
A process is described for producing a powder batch comprises a plurality of particles, wherein the particles include (a) a first catalytically active component comprising at least one transition metal or a compound thereof; (b) a second component different from said first component and capable of removing oxygen from, or releasing oxygen to, an exhaust gas stream; and (c) a third component different from said first and second components and comprising a refractory support. The process comprises providing a precursor medium comprising a liquid vehicle and a precursor to al least one of said components (a) to (c) and heating droplets of said precursor medium carried in a gas stream to remove at least part of the liquid vehicle and chemically convert said precursor to said at least one component.