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Application of catalyst with multiple active components for preparing 1,3-propanediol by hydrogenolysis of glycerin

An active component, glycerol hydrogenolysis technology, applied in heterogeneous catalyst chemical elements, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of catalyst deactivation, impurity tolerance Problems such as power difference to achieve the effect of improving the conversion rate

Active Publication Date: 2017-06-23
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

Noble metal catalysts (such as platinum, palladium, rhodium, iridium, ruthenium, etc.) have strong catalytic activity, but they have poor tolerance to impurities in crude glycerin, and are prone to poisoning and deactivation of the catalyst. In order to solve this problem, it is necessary to introduce The second or third active component to increase the resistance of the catalyst to poisons, so as to meet the needs of actual production

Method used

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  • Application of catalyst with multiple active components for preparing 1,3-propanediol by hydrogenolysis of glycerin
  • Application of catalyst with multiple active components for preparing 1,3-propanediol by hydrogenolysis of glycerin

Examples

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Effect test

Embodiment 1

[0025] The catalyst used is WO 3 -Al 2 o 3 The carrier (the mass fraction of tungsten oxide is 20%) loads active components platinum and lanthanum oxide. Catalyst composition is Pt%=5wt%, La%=0.5wt%, the rest is WO 3 -Al 2 o 3 carrier. WO 3 -Al 2 o 3 The carrier is prepared by wet impregnation method, and the specific preparation steps include: a) Impregnate the precursor solution of tungsten oxide (ammonium metatungstate or ammonium paratungstate aqueous solution) on the alumina by wet method, the impregnation time is 18h, and dry in an oven at 120°C For more than 10 hours, calcined at 900°C for 10 hours in a muffle furnace to obtain a composite carrier of tungsten oxide-alumina, which is denoted as WO 3 -Al 2 o 3 . b) Immerse an equal volume of chloroplatinic acid solution into WO 3 -Al 2 o 3 On the carrier, impregnate overnight, dry in an oven at 120°C for 12h, and calcinate in a muffle furnace at 500°C for 10 hours to obtain Pt / WO 3 -Al 2 o 3 , the mass c...

Embodiment 2

[0027] Reverse the loading order of Pt and La, other conditions are the same as in Example 1, denoted as Pt / La 2 o 3 / WO 3 -Al 2 o 3 .

Embodiment 3

[0029] Simultaneous loading of Pt and La on the carrier WO 3 -Al 2 o 3 On, other conditions are identical with embodiment 1, denoted as Pt-La 2 o 3 / WO 3 -Al 2 o 3 .

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Abstract

The invention relates to a catalyst for preparing 1,3-propanediol by hydrogenolysis of glycerin as well as a preparation method thereof. The catalyst comprises a tungsten oxide-aluminum oxide (WO3-Al2O3) composite carrier and active components which comprise any one selected from ruthenium, rhodium, palladium, iridium and platinum (marked as A) and any one selected from gold, silver, copper, nickel, sodium oxide, lithium oxide, potassium oxide, magnesium oxide, gallium oxide, zinc oxide, iron oxide, molybdenum oxide, lanthanum oxide, zirconium oxide, cobalt oxide, rhenium oxide, tin oxide, and manganese oxide (marked as a component B). The prepared catalyst can be used for generating 1,3-propanediol by hydrogenolysis of glycerin at a certain hydrogen pressure and temperature with high conversion rate and high selectivity.

Description

technical field [0001] The invention relates to a catalyst for preparing 1,3-propanediol by hydrogenolysis of glycerin, specifically WO 3 -Al 2 o 3 The carrier supports one of the active components of ruthenium, rhodium, palladium, iridium, platinum (referred to as A) and gold, silver, copper, nickel, sodium oxide, lithium oxide, potassium oxide, magnesium oxide, gallium oxide, zinc oxide, One of iron oxide, molybdenum oxide, lanthanum oxide, zirconium oxide, cobalt oxide, rhenium oxide, tin oxide, and manganese oxide (referred to as component B). [0002] The invention relates to the preparation method and application of the above catalyst, specifically the preparation of WO by wet impregnation. 3 -Al 2 o 3 Support, prepared multi-active component catalysts with different loading sequences, and investigated the activity and selectivity of the catalyst in the hydrogenolysis of glycerol to 1,3-propanediol under different preparation conditions. [0003] technical backgrou...

Claims

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Application Information

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IPC IPC(8): C07C29/60C07C31/20B01J23/652B01J23/89B01J23/656B01J23/68
CPCB01J23/002B01J23/6527B01J23/6562B01J23/6567B01J23/687B01J23/8993B01J2523/00C07C29/60C07C31/205B01J2523/31B01J2523/3706B01J2523/69B01J2523/13B01J2523/11B01J2523/22B01J2531/32B01J2523/19B01J2523/18B01J2523/17B01J2523/27B01J2523/842B01J2523/68B01J2523/48B01J2523/845B01J2523/847B01J2523/47B01J2523/43B01J2523/72
Inventor 王爱琴雷念王佳赵晓晨张涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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