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Catalyst for intermittent preparation of pure hydrogen using decahydronaphthalene as material and method thereof

A catalyst, decalin technology, applied in the field of hydrogen production, can solve problems such as little research

Inactive Publication Date: 2009-10-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few studies on the catalytic dehydrogenation of decahydronaphthalene as raw material to produce pure hydrogen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In a 500ml glass reactor with a reflux condenser, add 100g of liquid decahydronaphthalene raw material and 10g of nano-carbon fiber supported nano-Pt catalyst (the weight ratio of raw material to catalyst is 10:1), the catalyst is prepared by colloidal method, Pt and nano-carbon fiber The weight ratio of the Pt nanoparticles is 1:20, the size of the Pt nanoparticles is 0.5-4nm, and the average size is 2nm. Heating the reactor to 250°C, controlling the reaction pressure to be 1.0 atm, during the reaction, hydrogen is continuously released from the reactor, and the reaction stops after 2 hours. The total conversion rate of decahydronaphthalene is 50%, and the total amount of hydrogen generated is 40L. The production rate was 330ml / min.

Embodiment 2

[0044] In a 500ml glass reactor with a reflux condenser, add 100g of liquid decahydronaphthalene raw material and 10g of nano-carbon fiber-loaded nano-Pd catalyst (the weight ratio of raw material to catalyst is 10:1), the catalyst is prepared by colloidal method, Pd and nano-carbon fiber The weight ratio of the Pd nanoparticles is 1:20, the size of the Pd nanoparticles is 2-12nm, and the average size is 6nm. . Heating the reactor to 250°C, controlling the reaction pressure to be 1.0 atm, during the reaction, hydrogen is continuously released from the reactor, and the reaction stops after 2 hours. The total conversion rate of decahydronaphthalene is 10%, and the total amount of hydrogen generated is 6L. The generation rate was 50ml / min.

Embodiment 3

[0046] In a 250ml glass reactor with a reflux condenser, add 50g liquid decahydronaphthalene raw material and 5g nano-carbon fiber supported nano-Pt-Pd catalyst (raw material and catalyst weight ratio are 10: 1), the catalyst is prepared by impregnation, Pt and The weight ratios of Pd to carbon nanofibers are 1:30 and 1:60 respectively, and the average size of Pt-Pd nanoparticles is 4nm. The reactor was heated to 250°C, the reaction pressure was controlled to be 1.0 atm, hydrogen was continuously released from the reactor during the reaction, and the reaction was stopped after 2 hours. The total conversion rate of decahydronaphthalene was 60%, and the total amount of hydrogen generated was 20L.

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Abstract

The invention discloses a catalyst for intermittent preparation of pure hydrogen using decahydronaphthalene as material and a method thereof. The catalyst contains nanometer metal and nanometer carbon fibre, wherein the nanometer metal is selected from Pt or alloy containing Pt. The method for preparing the pure hydrogen comprises a step (1) of mixing the decahydronaphthalene with dehydrogenation reaction catalyst and heating to a temperature of 100-350 DEG C for reaction to obtain hydrogen.

Description

technical field [0001] The invention relates to hydrogen preparation, in particular to a catalyst and method for producing pure hydrogen by dehydrogenating liquid decahydronaphthalene as a raw material in a batch reactor. Background technique [0002] At present, the hydrogen economy has attracted widespread attention. On the one hand, the combustion of hydrogen only produces water, enabling true "zero emissions". Compared with currently known fossil fuels, hydrogen has the highest energy content per unit mass, and its calorific value is about three times that of gasoline, so it is an ideal zero-pollution energy source; on the other hand, hydrogen is used in petroleum refining and fine chemical industry It is an extremely important gas raw material in the fields such as hydrogenation, and can produce many chemical products and daily necessities through reactions such as catalytic hydrogenation. Therefore, the hydrogen economy has been highly valued and vigorously promoted ...

Claims

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Application Information

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IPC IPC(8): C01B3/22B01J23/42B01J21/18B01J23/44B01J23/89B01J23/46
Inventor 李平周奇朱俊隋志军王红周兴贵
Owner EAST CHINA UNIV OF SCI & TECH
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