Abstract:
Verfahren zur Herstellung von Aminen durch Umsetzung von Gemischen, die man bei der Spaltung von Erdölfraktionen erhält, mit Ammoniak oder primären oder sekundären Aminen der allgemeinen Formel I in der
R 1 ,R 2
Wasserstoff, C 1 - bis C 20 -Alkyl, C 2 - bis C 20 -Alkenyl, C 2 - bis C 20 -Alkinyl, C 3 - bis C 20 -Cycloalkyl, C 4 - bis C 20 -Alkyl-cycloalkyl, C 4 - bis C 20 -Cycloalkyl-alkyl, Aryl, C 7 - bis C 20 -Alkylaryl, C 7 - bis C 20 -Aralkyl oder gemeinsam eine gesättigte oder ungesättigte C 2 - bis C 12 -Alkylendikette
bedeuten, bei Temperaturen von 200 bis 350°C und Drücken von 100 bis 300 bar in Gegenwart eines Heterogenkatalysators, indem man als Heterogenkatalysator einen oder mehrere Vertreter der folgenden Klassen einsetzt:
a) Zeolithe b) Alumosilikate c) hydrothermal hergestellte Phosphate d) mesoporöse Oxide mit hoher Oberfläche e) Pillared Interlayered Clays (PILCs) f) amorphe Oxide, die nach dem Sol-Gel-Verfahren hergestellt werden g) säurebehandelte Schichtsilikate
Abstract:
(a) Zeolites, (b) aluminosilicates, (c) phosphates prepd. hydrothermally, (d) meso-porous oxides with high surface area, (e) pillared interlayered clays, (f) amorphous oxides prepd. by the sol-gel process and/or (g) acid-treated foliated silicates are used as the heterogeneous catalyst in the prepn. of amines (I) by reacting mixt. obtd. by cracking petroleum fractions (II) with NH3 or prim. or sec. amines of formula HN(R )R (III) at 200-350 degrees C and 100-300 bar; (in which R , R = H, 1-20 C alkyl, 2-20 C alkenyl, 2-20 C alkynyl, 3-20 C cycloalkyl, 4-20 C alkyl-cycloalkyl, 4-20 C cycloalkyl-alkyl, aryl, 7-20 C alkylaryl or 7-20 C aralkyl; or R , R = a 2-12 C alkylene di-chain).
Abstract:
(a) Zeolites, (b) aluminosilicates, (c) phosphates prepd. hydrothermally, (d) meso-porous oxides with high surface area, (e) pillared interlayered clays, (f) amorphous oxides prepd. by the sol-gel process and/or (g) acid-treated foliated silicates are used as the heterogeneous catalyst in the prepn. of amines (I) by reacting mixt. obtd. by cracking petroleum fractions (II) with NH3 or prim. or sec. amines of formula HN(R )R (III) at 200-350 degrees C and 100-300 bar; (in which R , R = H, 1-20 C alkyl, 2-20 C alkenyl, 2-20 C alkynyl, 3-20 C cycloalkyl, 4-20 C alkyl-cycloalkyl, 4-20 C cycloalkyl-alkyl, aryl, 7-20 C alkylaryl or 7-20 C aralkyl; or R , R = a 2-12 C alkylene di-chain).
Abstract:
(a) Zeolites, (b) aluminosilicates, (c) phosphates prepd. hydrothermally, (d) meso-porous oxides with high surface area, (e) pillared interlayered clays, (f) amorphous oxides prepd. by the sol-gel process and/or (g) acid-treated foliated silicates are used as the heterogeneous catalyst in the prepn. of amines (I) by reacting mixt. obtd. by cracking petroleum fractions (II) with NH3 or prim. or sec. amines of formula HN(R )R (III) at 200-350 degrees C and 100-300 bar; (in which R , R = H, 1-20 C alkyl, 2-20 C alkenyl, 2-20 C alkynyl, 3-20 C cycloalkyl, 4-20 C alkyl-cycloalkyl, 4-20 C cycloalkyl-alkyl, aryl, 7-20 C alkylaryl or 7-20 C aralkyl; or R , R = a 2-12 C alkylene di-chain).
Abstract:
Disclosed is a method of preparing amines of general formula (I), in which R , R , R , R , R and R are hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkinyl, C3-C20 cycloalkyl, C4-C20 alkylcycloalkyl, C4-C20 cycloalkylalkyl, aryl, C7-C20 alkylaryl or C7-C20 aralkyl, R and R together form a saturated or unsaturated C3-C9 alkylene di-chain and R or R is C21-C200 alkyl or C21-C200 alkenyl or R and R together form a C2-C12 alkylene di-chain, by reacting olefins of general formula (II), in which R , R , R and R are as defined above, with ammonia or primary or secondary amines of general formula (III), in which R and R are as defined above, at temperatures of 200 to 350 DEG C and pressures of 100 to 300 bar in the presence of a zeolite catalyst, a boron beta -zeolite being used as the catalyst.