Abstract:
The invention relates to a method for producing 1,2-propandiol, wherein a flow containing glycerine, in particular a flow produced on an industrial scale during the production of biodiesel, is subjected to hydrogenation in a two-step reactor cascade.
Abstract:
The present invention relates to a method for producing 1,2-propanediol from glycerin, comprising at least the steps of: (A) providing a glycerin flow G1, (B) desulfurization of the glycerin flow G1 from step (A) by hydrogenating with hydrogen at a pressure of 50 300 bar in the presence of a catalyst in order to obtain a glycerin flow G2, and (C) hydrogenating the glycerin flow G2 from step (B) with hydrogen in the presence of a catalyst, in order to obtain 1,2-propanediol.
Abstract:
The invention relates to a continuous method for producing para-alkyl substituted cyclohexylmethanols, in particular 4-isopropylcyclohexylmethanol, by catalytic hydrogenation of the corresponding aldehyde or ketone in the presence of hydrogen and in the presence of a catalyst, comprising ruthenium applied to a carrier as an active metal, wherein the carrier comprises AI2O3 and/or SiO2 and wherein the catalyst is used in the form of a fixed bed catalyst in a hydrogenation reactor or in a plurality of hydrogenation reactors connected consecutively.
Abstract translation:本发明涉及一种用于生产对烷基取代Cyclohexylmethanolen的连续方法中,特别是4-lsopropylcyclohexyl - 甲醇,通过在氢的存在下和在催化剂的存在下施加上的活性金属钌相应的醛或酮的催化氢化 载体,与载体Al 2 O 3和/或SiO 2,并且其中所述催化剂以固定床催化剂的形式使用在氢化反应器或几个连续的氢化反应器。
Abstract:
The invention relates to a method for producing 1,2-propandiol, wherein a flow containing glycerine, in particular a flow produced on an industrial scale during the production of biodiesel, is subjected to hydrogenation in an at least three-step reactor cascade.
Abstract:
The present invention relates to a process for the preparation of 1,2-propandiol, at least comprising the following steps a) providing a glycerol-containing stream comprising at least 40% by weight of at least one organic solvent and b) subjecting the glycerol-containing stream of step a) to a hydrogenation in the presence of a copper-containing, heterogeneous catalyst at a pressure of at least 50 bar.
Abstract:
The invention relates to a method for producing 1,2-propandiol, wherein a flow containing glycerine, in particular a flow produced on an industrial scale during the production of biodiesel, is subjected to low-pressure hydrogenation.
Abstract:
Un proceso para preparar 1,2-propanodiol, que comprende (a) proveer una corriente que contiene glicerol y tiene un contenido de agua en el rango de entre 3% y 30% en peso y (b) someter la corriente que contiene glicerol a una hidrogenación en presencia de un catalizador heterogéneo que contiene cobre, a una temperatura de entre 100ºC y 320ºC y una presión de entre 100 y 325 bar.
Abstract:
The present invention relates to an integrated method for producing cellulose and at least one low-molecular-weight reusable material, in which a starting material containing lignocellulose is provided and subjected to a decomposition with a processing medium. A fraction enriched with cellulose and a fraction depleted of cellulose is then isolated from the decomposition material, the depleted fraction of cellulose being subjected to a treatment during which at least one low-molecular-weight reusable material is obtained.