Preparation method and application of resin carbon sphere supported palladium catalyst

A technology of palladium catalyst and resin carbon, which is applied in the field of catalyst preparation and application, to achieve the effects of mild and efficient conversion, good disperse load, and high-efficiency conversion

Active Publication Date: 2020-06-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, in the related hydrosilylation studies, there are few studies on the hydrodeoxygenati

Method used

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  • Preparation method and application of resin carbon sphere supported palladium catalyst
  • Preparation method and application of resin carbon sphere supported palladium catalyst
  • Preparation method and application of resin carbon sphere supported palladium catalyst

Examples

Experimental program
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Example Embodiment

[0034] Example 1:

[0035] (1) Preparation of catalyst: Measure 80ml deionized water and 20ml absolute ethanol, mix them uniformly under magnetic stirring, add 0.23ml ammonia water (25%) as the promoter to the mixed solution dropwise, in a 60℃ water bath environment Stir uniformly, then add 2.0g (17.98mmol) resorcinol, stir in a water bath until all is dissolved, then add 1.5ml (37.87mmol) formaldehyde dropwise, stir in a water bath at 60℃ for 6h, then transfer to a high-pressure hydrothermal kettle , Hydrothermal reaction for 10h in a 80℃ oven. The solid obtained after the reaction was washed 3 times with deionized water and 3 times with ethanol, and finally dried in an oven at 100° C. for 12 hours. The solid obtained by drying is ground to powder, and then calcined in a tube furnace under nitrogen atmosphere. -1 Increase the temperature to 300℃, keep it for 0.5h, then at 1℃min -1 The temperature was increased to 700°C at a rate of 3 hours, and the catalyst carrier carbon ball ...

Example Embodiment

[0040] Example 2:

[0041] (1) Preparation of the catalyst: Measure 60ml deionized water and 24ml absolute ethanol, mix them evenly under magnetic stirring, add 0.1ml promoter ammonia water (25%) dropwise to the mixed solution, under 30℃ water bath environment Stir uniformly, then add 0.95g (8.5mmol) resorcinol, stir in a water bath until all is dissolved, then add 1.3ml (32.8mmol) formaldehyde dropwise, stir in a 30℃ water bath environment for 4h, and then transfer to a high-pressure hydrothermal kettle , Hydrothermal reaction in an oven at 100℃ for 6h. The solid obtained after the reaction was washed 3 times with deionized water and 3 times with ethanol, and finally dried in an oven at 100° C. for 12 hours. The solid obtained by drying is ground to powder, and then calcined in a tube furnace under nitrogen atmosphere. -1 Increase the temperature to 410℃, keep it for 1h, then at 5℃min -1 The temperature was raised to 800°C at a rate of 2h, and the catalyst carrier carbon ball w...

Example Embodiment

[0049] Example 3:

[0050] (1) Preparation of catalyst: Measure 42ml of deionized water and 42ml of absolute ethanol, mix them evenly under magnetic stirring, add 0.12ml of promoter ammonia water (25%) dropwise to the mixed solution, under 100℃ water bath environment Stir uniformly, then add 1.2g (10.79mmol) resorcinol, stir in a water bath until all is dissolved, then add 2.4ml (60.60mmol) formaldehyde dropwise, stir for 1h in a water bath at 100℃, and then transfer to a high-pressure hydrothermal kettle , Hydrothermal reaction in a 150℃ oven for 5h. The solid obtained after the reaction was washed 3 times with deionized water, 3 times with ethanol, and finally dried in an oven at 150°C for 12 hours. The solid obtained by drying is ground to powder, and then calcined in a tube furnace under nitrogen atmosphere. -1 Increase the temperature to 450℃, keep it for 1h, then at 7℃min -1 The temperature was raised to 900°C at a rate of 3 hours, and the catalyst carrier carbon ball was ...

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Abstract

The invention relates to a preparation method and application of a resin carbon sphere supported palladium catalyst. The method comprises the following steps: polymerizing resorcinol and formaldehydeto form resin pellets, calcining and carbonizing to generate catalyst carrier carbon spheres, and finally loading metal palladium on the carbon sphere carrier by a hydrothermal method to obtain the resin carbon sphere supported palladium catalyst. The catalyst provided by the invention realizes mild and efficient conversion under vanillin hydrosilylation conditions, avoids the use of high-pressurehydrogen and acidic additives, and enables the bio-oil upgrading process to be more environment-friendly and safer.

Description

technical field [0001] The invention relates to a preparation method of a palladium catalyst supported by resin carbon spheres and its application in catalyzing the hydrodeoxygenation reaction of vanillin, a model compound of bio-oil, and belongs to the field of catalyst preparation and application. Background technique [0002] With the depletion of fossil energy and the increasingly serious environmental pollution, it is of great strategic significance to seek a renewable energy that can replace traditional fossil energy. As a renewable green energy source, biomass pyrolysis oil has the potential to replace traditional fossil fuels, and thus has attracted widespread attention. However, due to the high oxygen content and thermal instability of bio-cracked oil, it cannot be directly used for diesel engine combustion and needs to be further upgraded. [0003] Hydrodeoxygenation process HDO is one of the most effective biocracking oil upgrading methods, and is often used in b...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J35/00B01J35/08B01J35/10B01J37/08B01J37/10C07C41/18C07C43/23
CPCB01J37/084B01J37/10B01J37/08B01J35/006B01J35/08B01J35/1019B01J35/1038B01J35/1057B01J23/44C07C41/18C07C41/26C07C43/23Y02P30/20
Inventor 李浩黄浩
Owner HEBEI UNIV OF TECH
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