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

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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 deactiva

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

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[0024] Example 1

[0025] The catalyst used is WO 3 -Al 2 O 3 The carrier (mass fraction of tungsten oxide is 20%) supports active components platinum and lanthanum oxide. The 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 a wet impregnation method, and the specific preparation steps include: a) The precursor solution of tungsten oxide (ammonium metatungstate or ammonium paratungstate aqueous solution) is wet-impregnated on alumina, and the impregnation time is 18h and dried in an oven at 120°C. For more than 10 hours, calcined in a muffle furnace at 900°C for 10 hours to obtain a composite carrier of tungsten oxide-alumina as WO 3 -Al 2 O 3 . b) Dip an equal volume of chloroplatinic acid solution into WO 3 -Al 2 O 3 On the carrier, immerse overnight, dry in an oven at 120°C for 12 hours, and calcinate in a muffle furnace at 500°C for 10 hours to prepare Pt / WO 3 -Al 2 O 3 , The mass content of Pt in the...

Example Embodiment

[0026] Example 2

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

Example Embodiment

[0028] Example 3

[0029] Load Pt and La on carrier WO at the same time 3 -Al 2 O 3 Above, other conditions are the same as in Example 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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