摘要:
The invention relates to a process for preparing betaines of formula (I) wherein R1 represents a C1-C24 hydrocarbon group, and R2 and R3 independently represent a C1-C3 hydrocarbon group, comprising reacting an aqueous solution of an ethoxylated quaternay ammonium compound of formula (II) wherein R1, R2, and R3 have the same meaning as described above and X− represents a suitable anion, with oxygen or an oxygen-containing gas under alkaline conditions in the presence of a supported and promoted Pt catalyst at a temperature ranging from room temperature to 70° C. Preferably, use is made of a Pt/Bi/C catalyst. The invention process is particularly suitable for converting choline chloride into betaine, which is used as an animal feed
摘要:
The present invention relates to a method for producing fatty acid esters from fats and/or oils of biogenic origin by transesterification with monovalent or polyvalent alcohols in the presence of a special hydroxy-functional quaternary ammonium compound as the catalyst.
摘要:
The present invention relates to a method for producing fatty acid esters from fats and/or oils of biogenic origin by transesterification with monovalent or polyvalent alcohols in the presence of a special hydroxy-functional quaternary ammonium compound as the catalyst.
摘要:
The present invention relates to a composition comprising choline hydroxide, a solvent, and one or more stabilizers selected from the group consisting of a hydride and choline sulfite.