The present invention relates to an eggshell catalyst comprising an active metal selected from the group consisting of ruthenium, rhodium, palladium, platinum and mixtures thereof, applied to a support material comprising silicon dioxide, wherein the pore volume of the support material is 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is 280 to 500 m
2
/g, and at least 90% of the pores present have a diameter of 6 to 12 nm, to a process for preparing this eggshell catalyst, to a process for hydrogenating an organic compound which comprises at least one hydrogenatable group using the eggshell catalyst, and to the use of the eggshell catalyst for hydrogenating an organic compound.
METHOD OF REGENERATING RUTHENIUM CATALYSTS SUITABLE FOR HYDROGENATION
申请人:Henkelmann Jochem
公开号:US20090281348A1
公开(公告)日:2009-11-12
The present invention relates to a method of regenerating a ruthenium catalyst suitable for hydrogenation, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity has been attained. The method is particularly useful for ruthenium catalysts which are used for the hydrogenation of aromatics.
CATALYST AND PROCESS FOR HYDROGENATING ORGANIC COMPOUNDS COMPRISING HYDROGENATABLE GROUPS
申请人:Laar Frederik Van
公开号:US20100152436A1
公开(公告)日:2010-06-17
The invention relates to a shell catalyst containing ruthenium as an active metal, alone or together with at least one other metal of the auxiliary group IB, VIIB or VIII of the periodical system of the elements (CAS version), and applied to a carrier containing silicon dioxide as a carrier material. The invention also relates to a method for producing said shell catalyst, and to a method for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols, using the inventive shell catalyst. The invention further relates to the use of the inventive shell catalyst for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols.
Eine Korrosionsschutzmittelzusammensetzung zur Hemmung der Korrosion von Metallen, gekennzeichnet durch
(a) mindestens eine 3-Alkyladipinsäure der Formel
worin R eine geradkettige oder verzweigte C4-C9-Alkylgruppe bedeutet,
(b) ein Basifizierungsmittel und gegebenenfalls
(c) Wasser,
wobei das Gewichtsverhältnis der Verbindung der Formel 1 zum Basifizierrungsmittel im Bereich 1:1 bis 1:20 liegt, sowie eine Funktionsflüssigkeitsformulierung, die als Korrosionsschutzmittel eine Korrosionsschutzmittelzusammensetzung nach Anspruch 1 enthält, und neue Verbindungen der Formel I.