Shell Oil Comapny

Shell Usa, Inc.

Shell Internationale Research Maatschappij, B.v.

Andreas Klemt

Wenzhong Zhang

Guido Seng

Paul Benjerman Himelfarb

Frank Peter Friedel

Wassim Klink

László Domokos

Erwin Roderick Stobbe

Stefan Boettcher

Madhusudhan Rao Panchagnula

Srikant Gopal

Klaus Hoheisel

Wolfgang Dirk Lose

Tobias Herzfeld

Sven Scholz

Ralf Schricker

Frank Friedel

Rainer SCHÖDEL

Axel Pachulski

Dolf Van Der Zeijden

Henri Preising

A reactor for reducing the concentration of NOin a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NO; one or more catalyst beds comprising a ceramic or metallic foam with a NOreduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

Reactor for reducing nitrogen oxides

Presented is a selective hydrogenation catalyst and a method of making the catalyst. The catalyst comprises a carrier containing bi-metallic nanoparticles. The nanoparticles comprise a silver component and a palladium component. The catalyst is made by incorporating an aqueous dispersion of the bi-metallic nanoparticles onto a catalyst carrier followed by drying and calcining the carrier having incorporated therein the dispersion. The catalyst is used in the selective hydrogenation of highly unsaturated hydrocarbons contained olefin product streams.

Bimetallic nanoparticle-based catalyst, its use in selective hydrogenation, and a method of making the catalyst

The invention relates to a method for preparing a hydrogenation catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The method involves the mixing of an acidic solution comprising metal ions of a metal selected from the IUPAC group 8, 9 or 10 metals, preferably cobalt, a suspension comprising the carrier material and an alkaline solution. The invention also relates to a precursor of a hydrogenation catalyst wherein the precursor comprises crystallites of metal oxides having an average size of max. 8 nm.

Hydrogenation catalyst and method for preparing the same

A reactor for reducing the concentration of NOx in a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NOx; one or more catalyst beds comprising a ceramic or metallic foam with a NOx reduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

A catalyst bed comprising a ceramic or metallic foam comprising one or more NOreduction catalysts is described. A method for reducing the concentration of NOin a dust containing gas stream comprising: a) passing a first gas stream containing NOinto a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOreduction catalyst to produce a second gas stream with a reduced NOconcentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nmand the pressure drop of the foam catalyst bed increases by 300% or less relative to the initial pressure drop of the foam catalyst bed due to dust accumulation, measured under the same conditions is also described.

Catalyst bed and method for reducing nitrogen oxides

A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. Further, a method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the second gas stream comprises at least 50% of the amount of dust in the first gas stream.

The invention relates to a process for preparing a catalyst, which comprises: mixing a copper salt containing solution with a silicate salt containing composition resulting in a precipitated solid; and subjecting the precipitated solid to a temperature in the range of from 150 to 500&#xb0; C. Further, the invention relates to a copper containing catalyst obtainable by said process. Still further, the invention relates to a hydrogenation process wherein such copper containing catalyst is used, more in particular a process wherein methyl phenyl ketone is hydrogenated into methyl phenyl carbinol.

Preparation and use of copper containing hydrogenation catalyst

The invention relates to a method for preparing a catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The invention relates to a catalyst particle and catalyst precursor thereof obtainable by said method. The catalyst may be used in a process for synthesising hydrocarbons.

Method for preparing a catalyst

The present invention provides a catalyst for the decomposition of nitrous oxide, said catalyst comprising oxides of cobalt, zinc and aluminum and an alkali metal promoter.

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Leuna, Germany

Andreas Klemt