Evonik Operations Gmbh

Evonik Degussa Gmbh

Lucas Geist

Cornelia Borgmann

Christian Reus

Harald Jakob

Axel Ronneburg

Jürgen Bilz

Christian Renner

Achim Fischer

Anja Nordschild

Georg Borchers

Stephan Rautenberg

Christoph Kobler

Martin Körfer

Thomas Haeussner

Judith Hierold

Christian Kaiser

Frank Fischer

Sascha Ceylan

Andrea Kopp

Juergen Bilz

Daniel Rost

Javier Martin-tereso Lopez

Isabela Pena Carvalho De Carvalho

Javier MARTÍN-Tereso LÒPEZ

The invention refers to the use of a particulate catalyst containing 60.0 to 99.5 wt. % ZrOstabilised with an oxide of the element Hf and at least one oxide of the element M, wherein M=Ce, Si, Ti, or Y, for the hydrolysis reaction of methionine amide to methionine, wherein the median particle size xof the particulate catalyst is in the range of from 0.8 to 9.0 mm, preferably of from 1.0 to 7.0 mm. The invention also refers to a process for preparing methionine comprising a step of contacting a solution or suspension comprising methionine amide and water with said particulate catalyst to provide a reaction mixture comprising methionine and/or its ammonium salt from which methionine can be isolated.

Salt-free production of methionine from methionine nitrile

Disclosed are compositions comprising NPN compound coated with a bypass agent allowing ruminal bypass of the composition and a method for increasing fiber digestibility, a method for increasing feed intake, a method for increasing somatic growth, a method for increasing milk production, a method for reducing N excretion in a ruminant, a method for improving rumen pH stability in a ruminant, a method for preventing or reducing ammonia toxicity in the rumen. The compositions and methods of the invention are particularly suitable for ruminants that are held in harsh climates and/or at remote locations from a farm.

Compositions for improving nitrogen utilization in a ruminant

The present invention relates to a process for the preparation of methionine comprising the step of contacting a solution or suspension comprising 2-amino-4-(methylthio)butanenitrile and/or 2-amino-4-(methylthio)butaneamide with water in the presence of a catalyst to give a methionine comprising mixture, wherein the catalyst comprises CeO2 comprising particles, wherein the CeO2 comprising particles have a BET surface area of from 175 to 300+/−10% m2/g measured according to DIN ISO 9277-5 (2003), a mean maximum Feret diameter x, mean of from 3+/−10% to 40+/−10% nm and a mean minimum Feret diameter x, mean of from 2+/−10% to 30+/−10% nm, both measured according to DIN ISO 9276-6 (2012).

Process for the preparation of methionine

The present invention relates to a process for the preparation of methionine comprising the step of contacting a solution or suspension comprising 2-amino-4-(methylthio)butanenitrile and/or 2-amino-4-(methylthio)butaneamide with water in the presence of a catalyst to give a methionine comprising mixture, wherein the catalyst comprises CeOcomprising particles, wherein the CeOcomprising particles comprise from 50 to 100 wt.-% of CeO, have a BET surface area of from 35 to 65 m/g measured according to DIN ISO 9277-5 (2003), a mean maximum Feret diameter xof from 10 to 40 nm and a mean minimum Feret diameter xof from 5 to 30 nm, both measured according to DIN ISO 9276-6 (2012).

A compound, which is 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol, a composition containing the compound, a method for the preparation thereof, a method for preparing 3-methylthiopropionaldehyde by reacting 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol with acrolein, and also to the use of 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol or compositions containing the compound for the storage and/or transport of 3-methylthiopropionaldehyde and/or methyl mercaptan.

Storage of 3-methylthiopropionaldehyde and methyl mercaptan

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Freigericht, Germany

Lucas Geist