Dehydrogenation catalyst, preparation method and hydrogen release method

A dehydrogenation catalyst and carrier technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of poor catalyst stability, easy sintering and growth of Pt, etc. Achieve the effects of reducing surface acidity, inhibiting carbon deposition, and hydrogen storage safety

Inactive Publication Date: 2021-11-16
浙江理谷新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the deficiency that when the carrier is alumina in the prior art, the Pt loaded on it is easy to sinter and grow up, and the acidic sites on the surface will cause carbon deposits to make the catalyst poor in stability, and provide a pre-synthesized bimetal nanocolloid, The catalyst prepared by loading on the basic carrier containing alumina can greatly improve the reaction activity and stability of the dehydrogenation catalyst, preparation method and hydrogen release method when used for dehydrogenation reaction

Method used

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  • Dehydrogenation catalyst, preparation method and hydrogen release method
  • Dehydrogenation catalyst, preparation method and hydrogen release method
  • Dehydrogenation catalyst, preparation method and hydrogen release method

Examples

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preparation example Construction

[0034] A method for preparing a dehydrogenation catalyst, which is made by using a preparation device for a dehydrogenation catalyst, comprising the steps of:

[0035] Step 1: Prepare the bimetallic alloy nano-colloid of the active component by the liquid phase reduction method; specifically: dissolve the protective agent with controllable size of the nano-particle size in water, stir until it is completely dissolved; dissolve the soluble platinum salt or acid precursor and another soluble salt precursor of Group VIII transition non-noble metal elements are dissolved in the above solution, fully stirred to form a uniform solution; the alkali solution is added to the above solution, and the pH is adjusted to 10-11; finally, a reducing agent is added to the above solution , kept stirring, and reacted for 2 hours to obtain bimetallic alloy nanocolloids;

[0036] Step 2: Prepare spinel carrier by co-precipitation method or sol-gel method;

[0037] Step 3: mixing the bimetallic na...

Embodiment 1

[0046] The following is a small-scale test for preparing a dehydrogenation catalyst according to the present invention.

[0047] (1) Preparation of catalyst:

[0048]Fully dissolve 0.5g of polyvinylpyrrolidone PVP in 75ml of water, then mix 2ml of chloroplatinic acid solution (platinum content of 0.015g / ml) and 0.0306g of FeNCl 2 4H 2 O was added to the above solution and stirred fully. Under the mechanical stirring of 400r / min, 0.1M NaOH solution was added dropwise until the pH value of the system reached about 10, then 10 ml of 1M potassium borohydride solution was added, kept stirring for 2 hours, and then 3g Prepared Ca 0.2 Mg 0.8 al 2 o 4 Add spinel carrier powder to the above colloid for 3 hours of adsorption, then filter and wash the solid, vacuum-dry at 60°C for 12 hours, then bake at 800°C for 4 hours in a nitrogen atmosphere, and finally bake at 400°C for 4 hours in an air atmosphere to obtain the active Pt1Fe1 / Ca with a total metal content of 1.35 wt% 0.2 Mg ...

Embodiment 2

[0052] (1) Catalyst preparation:

[0053] The catalyst support was replaced by Ba 0.2 Mg 0.8 al 2 o 4 , other are with embodiment 1, and catalyzer is recorded as No. 2.

[0054] (2) Evaluation conditions are the same as in Example 1.

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Abstract

The invention discloses a dehydrogenation catalyst, a preparation method and a hydrogen release method. A barrel is included, a heating device and a cooling device are arranged on the outer surface of the barrel; a baffle is arranged on the inner side wall of the barrel; two corresponding inner side walls of the baffle are connected with sliding devices; a plurality of bulges are arranged on the other two corresponding inner side walls of the baffle; a gas outlet pipe and a feeding pipe are arranged over the barrel; a gas inlet pipe is arranged under the barrel; a separating device and a bubble breaking plate are arranged in the upper of the interior of the barrel, the bubble breaking plate is fixedly connected with the baffle, the separating device is located under the bubble breaking plate, one end of the separating device is suspended in the barrel, the other end of the separating device is fixedly connected with the bubble breaking plate and communicated with the gas outlet pipe, a gas distributing plate is arranged in the barrel, the gas distributing plate is fixedly connected with the lower end of the baffle, and the gas distributing plate is located over the gas inlet pipe. The catalyst has the beneficial effects that the active components of the catalyst can be highly uniformly dispersed, the dehydrogenation effect is remarkably improved, and carbon deposition is effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of hydrogen release of organic liquid hydrogen storage materials, in particular to a dehydrogenation catalyst, a preparation method and a hydrogen release method. Background technique [0002] Hydrogen has the characteristics of high energy density and clean combustion. It is a green and sustainable new energy. It can solve the problems faced by current fossil energy and shows a good application prospect. In recent years, the development and utilization of hydrogen energy has attracted the attention of countries all over the world. China has also proposed a clear time target for carbon peaking and carbon neutrality. Therefore, the development of hydrogen energy can be said to be the focus of research and development in the energy field at home and abroad. [0003] Hydrogen energy applications include hydrogen production, storage, transportation and application. Due to the characteristics of small hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J23/02B01J37/03B01J37/08B01J37/16C01B3/00C01B3/54B01D19/02
CPCB01J23/8946B01J23/8906B01J35/0013B01J23/005B01J23/02B01J37/03B01J37/036B01J37/16B01J37/08C01B3/0015C01B3/54B01D19/02Y02E60/32
Inventor 王坚吴光勇陆珺
Owner 浙江理谷新能源有限公司
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