Haldor Topsoe A/s

Claus J H Jacobsen

Michael Brorson

Iver Schmidt

Konrad Herbst

Martin Muhler

Claus Madsen

Olaf Hinrichsen

Hubert Bielawa

Michael Boe

Jindrich Houzvicka

Christian Olsen

Jens Sehested

Herman Teunissen

S&oslash;ren Pehrson

S&oslash;ren Dahl

Anna Carlsson

Svend Erik Nielsen

Jesper Dohrup

Thomas Willum Hansen

Haldor F A Tops&oslash;e

Henrik Udesen

Eric O T&ouml;rnqvist

Tine Shim

Niels Kegel Sørensen

Process for the preparation of ammonia comprising contacting ammonia synthesis gas with one or more catalysts, at least one catalyst having supported ruthenium as the active catalytic material supported on a nitride on a secondary support. A catalyst for use in the above process is provided.

Process for the preparation of ammonia

The invention concerns a process for the immobilization of a homogeneous catalyst comprising immobilizing the homogeneous catalyst in zeotype crystals with a non-crystallographic mesopore system and a mesopore volume of the zeotype crystals above 0.25 ml/g. The invention also concerns a catalytic material prepared by the immobilization process.

Process for the immobilization of a homogeneous catalyst, and catalytic material

A rhenium (IV) sulphide (ReS) nanotube material and a method of preparation of the rhenium (IV) sulphide (ReS) nanotube material. The rhenium (IV) sulphide (ReS) nanotube material comprises hollow cylinders of concentric rhenium (IV) sulphide layers, the ReSinterlayer distance being between 0.5 to 0.7 nm. Each ReSlayer consists of a layer of rhenium atoms sandwiched between two layers of sulfur atoms.

Rhenium (IV) sulphide nanotube material and method of preparation

Process for the preparation of ammonia by contacting an ammonia synthesis gas with ammonia catalyst particles arranged in a fixed bed, wherein the fixed bed comprises catalyst particles of the ammonia catalyst with a particle size being in the range of <1.5 mm and &gE;2.2 mm.

Process for the preparation of ammonia from ammonia synthesis gas by contacting the synthesis gas with ammonia forming conditions with a catalyst comprising ruthenium as the active catalytic material supported on a carrier of boron nitride and/or silicon nitride.

Process for the preparation of ammonia and ammonia synthesis gas

A catalyst active in ammonia synthesis with improved activity and a process for the recovery of useful components from the catalyst.

Process for catalytic ammonia production&mdash;preparation and recovery of ammonia synthesis catalyst

Method of preparing zeolite single crystals with straight mesopores

Method of preparing zeolite single crystals comprising the step of: applying a synthesis gel with zeolite precursor composition within pore system and on surface of a particulate matrix material having a predetermined pore structure and particle size; subjecting the precursor composition to crystallising conditions; and isolating porous single crystals of the zeolite by removing the matrix material.

Method of preparing zeolite single crystals

Process for catalytic ammonia production-preparation and recovery of ammonia synthesis catalyst

Processes applying mesoporous titanium containing zeolite based catalysts for selective oxidation or epoxidation of hydrocarbons by peroxides.

Process for the catalytic selective oxidation of a hydrocarbon compound in presence of mesoporous zeolite

Process for catalytic steam reforming of a carbonaceous feedstock with improved resistance to sulphur poisoning and sintering characterized by contacting the feedstock with a nickel catalyst supported on magnesium aluminum spinel, MgO&middot;xAl O , wherein the spinel support has a specific surface area A &lsqb;m /g&rsqb; higher than 400&middot;exp(&minus;T /400&deg; C.) obtained by calcination at a temperature T &lsqb;&deg; C.&rsqb;.

Process for catalytical steam reforming of a hydrocarbon feedstock

Method for preparation of small zeotype crystals

Process for the preparation of ammonia from ammonia synthesis gas by contacting the synthesis gas with a bimetallic catalyst comprising a Group VIII metal combined with a Group VIB metal at conditions being effective in the formation of ammonia, wherein the bimetallic catalyst is in its nitride form during contact with the synthesis gas.

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Jaegerspris, Denmark

Claus J H Jacobsen