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A kind of preparation method and application of modified clay ore supported palladium catalyst

A technology of palladium catalyst and clay ore, which is applied in the application of the catalyst in the liquid-phase hydrogen production reaction of formic acid, and in the field of preparation of palladium catalyst supported by modified clay ore, can solve the problem that homogeneous catalysts are not easy to separate and recycle, limit wide application, Problems such as not being able to meet practical applications, to achieve the effects of high formic acid conversion rate and hydrogen selectivity, good catalytic efficiency, and uniform distribution

Active Publication Date: 2021-09-07
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the shortcomings of homogeneous catalysts that are not easy to separate and recycle limit their wide application in industry.
The patent document whose publication number is CN105217568A discloses a kind of supported Ag-Pd / C 3 N 4 Nano-catalyst, using this catalyst to carry out formic acid dehydrogenation reaction, its selectivity is as high as 100%, and its catalytic activity is good, but it is far from meeting the needs of practical application

Method used

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  • A kind of preparation method and application of modified clay ore supported palladium catalyst
  • A kind of preparation method and application of modified clay ore supported palladium catalyst
  • A kind of preparation method and application of modified clay ore supported palladium catalyst

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Embodiment 2

[0048] 1. Using the adsorption reduction method, changing the amount of APTMS to prepare the modified sepiolite supported palladium catalyst. The specific steps are as follows:

[0049] (1) Measure 83.3ml of concentrated hydrochloric acid with a mass fraction of 36-38%, and transfer to a 500ml volumetric flask to constant volume, and prepare a 2mol / L hydrochloric acid solution. Weigh 10g of sepiolite raw ore, add it to the above 100ml hydrochloric acid solution, and place it in a magnetic stirring electric heating mantle (70°C, 700rpm) to fully react for 20h, then suction filter, wash with deionized water until neutral, put Dry in an electric thermostat (105°C), and grind to obtain acid-modified sepiolite.

[0050] (2) Accurately weigh 2g of acid-modified sepiolite, add it to 100ml of absolute ethanol, stir for 20min (700rpm), and place it in a magnetic stirring electric heating mantle to heat the solution to 70°C, then slowly add 0.1g3 -Aminopropyltrimethoxysilane (APTMS) (o...

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Abstract

The invention discloses a preparation method of a modified clay ore supported palladium catalyst and the application of the catalyst in formic acid liquid-phase hydrogen production reaction. The catalyst provided by the invention comprises a modified clay ore carrier and an active precious metal palladium component loaded on the modified clay ore carrier. On the basis of preparing the modified clay ore carrier, the invention adopts an adsorption reduction method to prepare the modified clay ore loaded palladium catalyst. The invention also provides an application of the catalyst in the hydrogen production process of formic acid decomposition, which has excellent catalytic effect on formic acid dehydrogenation reaction and has good industrial application value.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method and application of a modified clay ore-loaded palladium catalyst, and the application of the catalyst in formic acid liquid-phase hydrogen production reaction. Background technique [0002] Hydrogen energy is one of the most promising energy sources in renewable energy storage solutions. The process of using hydrogen energy will not have a negative impact on the environment, which meets the strategic requirements of contemporary sustainable development. However, the volume energy content of hydrogen is very low, and the storage and transportation in gas form are very difficult, which also limits the large-scale use of hydrogen energy. One solution is to use hydrogen carriers. Formic acid, as a liquid hydrogen storage material with good performance, is easy to store, transport and handle, and has a wide range of sources. It is a hydrogen storage carr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/44C01B3/22
CPCB01J23/44C01B3/22C01B2203/0277C01B2203/107
Inventor 黄杨强张乔羽梁志武
Owner HUNAN UNIV