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a la 2 o 2 co 3 Preparation method and application of nano-triangular plate-loaded pd catalyst

A triangular sheet and catalyst technology, which is applied in catalyst activation/preparation, organic compound preparation, physical/chemical process catalysts, etc. easy-to-control effects

Active Publication Date: 2021-08-24
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Until now, research workers have been relatively mature in the research on the catalysis of various morphologies of rare earth metal cerium oxides, but less research has been done on the morphologies of lanthanum oxides with strong basicity.

Method used

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  • a la <sub>2</sub> o <sub>2</sub> co <sub>3</sub> Preparation method and application of nano-triangular plate-loaded pd catalyst
  • a la <sub>2</sub> o <sub>2</sub> co <sub>3</sub> Preparation method and application of nano-triangular plate-loaded pd catalyst
  • a la <sub>2</sub> o <sub>2</sub> co <sub>3</sub> Preparation method and application of nano-triangular plate-loaded pd catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Nano triangular sheet La 2 o 2 CO 3 making process

[0031] Put 0.56g of potassium carbonate in 40ml of ethylene glycol and heat until completely dissolved to obtain an alkaline solution. Dissolve 1.0 g of lanthanum acetate in 40 ml of deionized water to obtain an aqueous solution of lanthanum acetate, and pour it into an alkaline solution. After stirring for 10 minutes, pour the resulting mixed solution into a hydrothermal reaction kettle, and the liquid volume is the total volume of the hydrothermal kettle. 70% of the volume. Carry out hydrothermal reaction, the temperature of hydrothermal reaction is 453K, and reaction time is 24h. After taking out the hydrothermal kettle, cool to room temperature, filter with suction, wash with deionized water until neutral, and wash with ethanol, put it in a 333K oven, and dry for 12 hours to obtain La(OH) 3 Nanotriangular sheet precursor. This La(OH) 3The precursor of the nanotriangular sheets was calcined in a muffle f...

Embodiment 2

[0040] 1) Nano triangular sheet La 2 o 2 CO 3 The preparation process

[0041] Put 0.56g of potassium carbonate in 40ml of ethylene glycol and heat until completely dissolved to obtain an alkaline solution. Dissolve 1.0g of lanthanum acetate in 40ml of deionized water to obtain an aqueous solution of lanthanum acetate, and pour it into an alkaline solution. After stirring for 10 minutes, pour the resulting mixed solution into a hydrothermal reaction kettle. The volume of the liquid is the total volume of the hydrothermal kettle. 70%. Carry out hydrothermal reaction, the temperature of hydrothermal reaction is 453K, and reaction time is 12h. After taking out the hydrothermal kettle, cool to room temperature, filter with suction, wash with deionized water until neutral, and wash with ethanol, put it in a 333K oven, dry for 12 hours, and roast in a muffle furnace. The roasting temperature is 773K, and the roasting time is for 4h. The obtained sample looks like Figure 5 sh...

Embodiment 3

[0043] 1) Nano triangular sheet La 2 o 2 CO 3 The preparation process

[0044] Put 0.56g of potassium carbonate in 40ml of ethylene glycol and heat until completely dissolved to obtain an alkaline solution. Dissolve 1.0g of lanthanum acetate in 40ml of deionized water to obtain an aqueous solution of lanthanum acetate, and pour it into an alkaline solution. After stirring for 10 minutes, pour the resulting mixed solution into a hydrothermal reaction kettle. The volume of the liquid is the total volume of the hydrothermal kettle. 70%. A hydrothermal reaction is carried out, the temperature of the hydrothermal reaction is 453K, and the reaction time is 48h. After taking out the hydrothermal kettle, cool to room temperature, filter with suction, wash with deionized water until neutral, and wash with ethanol, put it in a 333K oven, dry for 12 hours, and roast in a muffle furnace. The roasting temperature is 773K, and the roasting time is for 4h. The obtained sample looks lik...

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Abstract

The invention belongs to the technical field of catalysts, in particular to a La 2 o 2 CO 3 Preparation method and application of Pd catalyst supported by nano triangular sheets. First prepare La 2 o 2 CO 3 The nanotriangular sheets were then loaded with Pd to prepare the catalyst. The present invention prepares La 2 o 2 CO 3 The method of nanotriangular sheets is relatively simple, the preparation conditions are easy to control, and the prepared La 2 o 2 CO 3 The morphology is uniform, the structure is stable, and the catalytic activity in the hydrogenation process of cinnamaldehyde after loading Pd is obviously better than that of the traditional loaded Pd catalyst, which has certain application value.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a La 2 o 2 CO 3 The preparation method of the Pd catalyst supported by nano triangular sheets has a simple preparation process and can achieve the purpose of controllable synthesis of nano particle morphology. The invention also relates to the application of the catalyst in the hydrogenation reaction of cinnamaldehyde to improve the conversion rate of cinnamaldehyde. Background technique [0002] Utilizing the morphology effect in nanocatalysis provides a new idea for the development of new catalysts. The essence is to selectively expose the active crystal plane through the regulation of the catalyst morphology, thereby changing the atomic arrangement of the catalyst surface, and finally achieving The purpose of improving catalyst activity, such as researchers reporting CeO 2 Nanorods with mainly exposed (110) and (100) facets generally have higher CO oxidation activity than nanorods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/232B01J37/10B01J37/03C07C45/62C07C47/228
CPCB01J27/232B01J37/031B01J37/10C07C45/62C07C47/228
Inventor 王非毕研帅胡凯陈南顾雅婷朱陈子
Owner CHANGZHOU UNIV
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