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Catalyst for producing 1,2-cyclohexane dicarboxylic acid diesters

A technology of cyclohexanedicarboxylic acid dibasic ester and phthalic acid dibasic ester, which is applied in the field of hydrogenation of phthalic acid dibasic ester and can solve problems such as harm to human health and the like

Inactive Publication Date: 2009-04-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But over the years, phthalate dibasic ester PVC plasticizers have received more and more criticisms that they may be harmful to human health in some applications.

Method used

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  • Catalyst for producing 1,2-cyclohexane dicarboxylic acid diesters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The catalyst of embodiment 1 is 1.0%Pd-0.03%Ru / Al 2 o 3 . Weigh 100 grams of macroporous Al 2 o 3 (BET: 56m 2 / g, 37.9nm), configuration 101ml contains 1.683 grams of PdCl 2 and 0.0624 g RhCl 3 Hydrochloric acid aqueous solution, impregnated with this aqueous solution the above-mentioned macroporous Al 2 o 3 Carrier, air-dried, oven-dried at 120°C for 4 hours, calcined at 300°C for 5 hours, hydrogen at 300°C (atmospheric pressure, 2400h -1 ) reduction activation for 5 hours.

Embodiment 2

[0023] Catalyst 1.0%Pd-0.03%Ru-1%Cu / Al of embodiment 2 2 o 3 . Weigh 100 grams of macroporous Al 2 o 3 (BET: 56m 2 / g, 37.9nm), weighed 3.880 grams of Cu (NO 3 ) 2 .3H 2 O was dissolved in 100ml of distilled water, and the above-mentioned macroporous Al was impregnated with this aqueous solution 2 o 3 The carrier was dried at 120°C for 4 hours and calcined at 500°C for 5 hours. 101ml of configuration contains 1.700 grams of PdCl 2 and 0.0623 g RhCl 3 Aqueous hydrochloric acid, impregnating the above Cu / Al with this aqueous solution 2 o 3 Samples were air-dried, oven-dried at 120°C for 4 hours, baked at 300°C for 5 hours, and in hydrogen at 300°C (atmospheric pressure, 2400h -1 ) reduction activation for 5 hours.

Embodiment 3

[0025] Catalyst 1.0%Pd-0.03%Ru-1%Fe / Al of embodiment 3 2 o 3 . Weigh 100 grams of macroporous Al 2 o 3 (BET: 56m 2 / g, 37.9nm), weighed 7.382 grams of Fe (NO 3 ) 3 .9H 2 O was dissolved in 100ml of distilled water, and the above-mentioned macroporous Al was impregnated with this aqueous solution 2 o 3 The carrier was dried at 120°C for 4 hours and calcined at 500°C for 5 hours. 101ml of configuration contains 1.700 grams of PdCl 2 and 0.0623 g RhCl 3 Hydrochloric acid aqueous solution, impregnate the above Fe / Al with this aqueous solution 2 o 3 Samples were air-dried, oven-dried at 120°C for 4 hours, baked at 300°C for 5 hours, and in hydrogen at 300°C (atmospheric pressure, 2400h -1 ) reduction activation for 5 hours.

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Abstract

The invention provides a catalyst for converting diisononyl phthalate, diisooctyl phthalate, dibutyl phthalate and other long-chain esters into corresponding 1, 2-cyclohexane dicarboxylic acid binary ester through hydrogenation. The catalyst for converting the diisononyl phthalate, the diisooctyl phthalate, the dibutyl phthalate and other long-chain esters into corresponding the 1,2-cyclohexane dicarboxylic acid binary ester through the hydrogenation consists of main active ingredients, additives and carriers, wherein the main active ingredients are noble metal Ru and Pd; the additives are Fe, Co, Ni, Cu and other metals or oxides; and macroporous Al2O3, ZrO2, TiO2 and the like are selected as the carriers. Under certain temperature, certain hydrogen pressure and the action of the catalyst, the diisononyl phthalate, the diisooctyl phthalate, the dibutyl phthalate and other long-chain esters in a trickle bed reactor can be converted into the corresponding the 1, 2-cyclohexane dicarboxylic acid binary ester with high activity and high selectivity.

Description

technical field [0001] The invention relates to a catalyst for preparing 1,2-cyclohexanedicarboxylic acid dibasic ester, in particular to a catalyst for hydrogenating phthalic acid dibasic acid dibasic ester to prepare 1,2-cyclohexanedicarboxylic acid dibasic ester catalyst. technical background [0002] Fatty polybasic esters, for example, 1,2-cyclohexane polybasic esters can be used as lubricating oils, auxiliaries in metal processing and plasticizers for polyolefins and PVC. At present, PVC plasticizers are mainly dibasic phthalates, such as dibutyl, dioctyl, dinonyl and didecyl. But over the years, phthalate dibasic ester PVC plasticizers have received more and more criticisms that they may be harmful to human health in some applications. Fatty dibasic acid dibasic ester compounds are a class of non-phthalic acid dibasic ester plasticizers, which are characterized by relatively low element mobility and excellent toxicological properties. More importantly, they are espe...

Claims

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Application Information

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IPC IPC(8): B01J23/89C07C69/75C07C67/303
Inventor 丁云杰刁成际马立新林培滋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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