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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 hydrodeoxygenation reaction of vanillin to replace acidic additives by regulating the microscopic properties of carbon materials.

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
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of the catalyst: Measure 80ml of deionized water and 20ml of absolute ethanol, mix them evenly under magnetic stirring, add 0.23ml of promoter ammonia (25%) to the mixed solution dropwise, and place in a water bath environment of 60°C Stir evenly, then add 2.0g (17.98mmol) resorcinol, stir in a water bath until completely dissolved, then add 1.5ml (37.87mmol) formaldehyde dropwise, stir for 6 hours in a water bath at 60°C, then move to a high-pressure hydrothermal kettle , Hydrothermal reaction in an oven at 80°C for 10h. The solid obtained after the reaction was washed three times with deionized water and three times with ethanol, and finally dried in an oven at 100° C. for 12 hours. Grind the dried solid to powder, and calcined in a tube furnace under a nitrogen atmosphere, first at 1 °C min -1The temperature is raised to 300°C at a rate of 0.5h, and then at 1°C min -1 The temperature was raised to 700°C at a certain rate and kept for 3 hours to obta...

Embodiment 2

[0041] (1) Preparation of the catalyst: Measure 60ml of deionized water and 24ml of absolute ethanol, mix them evenly under magnetic stirring, add 0.1ml of promoter ammonia (25%) to the mixed solution dropwise, and place in a water bath environment at 30°C Stir evenly, then add 0.95g (8.5mmol) resorcinol, stir in a water bath until completely dissolved, then add 1.3ml (32.8mmol) formaldehyde dropwise, stir for 4 hours in a water bath at 30°C, and then move to a high-pressure hydrothermal kettle , hydrothermally reacted in an oven at 100°C for 6h. The solid obtained after the reaction was washed three times with deionized water and three times with ethanol, and finally dried in an oven at 100° C. for 12 hours. Grind the dried solid to powder, and calcined in a tube furnace under nitrogen atmosphere, first at 2 °C min -1 The temperature is raised to 410°C at a rate of 1h, and then at 5°C min -1 The temperature was raised to 800°C at a certain rate and kept for 2 hours to obtai...

Embodiment 3

[0050] (1) Preparation of the catalyst: Measure 42ml of deionized water and 42ml of absolute ethanol, mix evenly under magnetic stirring, add 0.12ml of promoter ammonia (25%) to the mixed solution dropwise, and place the catalyst in a water bath environment at 100°C Stir evenly, then add 1.2g (10.79mmol) resorcinol, stir in a water bath until completely dissolved, then add 2.4ml (60.60mmol) formaldehyde dropwise, stir for 1h in a water bath at 100°C, and then move to a high-pressure hydrothermal kettle , hydrothermally reacted in an oven at 150°C for 5h. The solid obtained after the reaction was washed three times with deionized water and three times with ethanol, and finally dried in an oven at 150° C. for 12 hours. Grind the dried solid to powder, and calcined in a tube furnace under a nitrogen atmosphere, first at 3 °C min -1 The temperature is raised to 450°C at a rate of 1h, and then at 7°C min -1 The temperature was raised to 900°C at a certain rate and kept for 3 hour...

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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
CPCB01J37/084B01J37/10B01J37/08B01J23/44C07C41/18C07C41/26B01J35/393B01J35/51B01J35/643B01J35/633B01J35/615C07C43/23Y02P30/20
Inventor 李浩黄浩
Owner HEBEI UNIV OF TECH
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